{"id":35753,"date":"2026-03-03T14:08:41","date_gmt":"2026-03-03T08:38:41","guid":{"rendered":"http:\/\/microtexindia.com\/niken-kim-loai-hydrua-pin\/"},"modified":"2026-03-03T11:52:01","modified_gmt":"2026-03-03T06:22:01","slug":"niken-kim-loai-hydrua-pin","status":"publish","type":"post","link":"https:\/\/microtexindia.com\/vi\/niken-kim-loai-hydrua-pin\/","title":{"rendered":"Pin Nickel Metal Hydride (Pin NiMH)"},"content":{"rendered":"\t\t
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C\u00f4ng ngh\u1ec7 pin Nickel Metal Hydride (pin NiMh d\u1ea1ng \u0111\u1ea7y \u0111\u1ee7)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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C\u00f4ng tr\u00ecnh ti\u00ean phong v\u1ec1 Pin Nickel Metal Hydride \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i Trung t\u00e2m Nghi\u00ean c\u1ee9u Battelle Geneva b\u1eaft \u0111\u1ea7u sau ph\u00e1t minh c\u1ee7a n\u00f3 v\u00e0o n\u0103m 1967 d\u01b0\u1edbi d\u1ea1ng m\u1ed9t d\u1eabn xu\u1ea5t c\u1ee7a pin bot Ni-Cd v\u00e0 Ni-H2 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong v\u1ec7 tinh. \u0110\u1ed9ng l\u1ef1c ch\u00ednh cho c\u00e1c nghi\u00ean c\u1ee9u Ni-MH l\u00e0 nh\u1eefng l\u1ee3i th\u1ebf v\u1ec1 m\u00f4i tr\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn n\u0103ng l\u01b0\u1ee3ng cao h\u01a1n, \u00e1p su\u1ea5t th\u1ea5p h\u01a1n v\u00e0 chi ph\u00ed c\u1ee7a Ni-MH so v\u1edbi Ni-Cd: C\u00f4ng vi\u1ec7c ph\u00e1t tri\u1ec3n \u0111\u01b0\u1ee3c Daimler-Benz Comp t\u00e0i tr\u1ee3 trong g\u1ea7n 2 th\u1eadp k\u1ef7. \/ Stuttgart v\u00e0 Volkswagen AG trong khu\u00f4n kh\u1ed5 Deutsche Automobilgesellschaft. Pin cho th\u1ea5y m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng v\u00e0 c\u00f4ng su\u1ea5t cao l\u00ean \u0111\u1ebfn 50 Wh \/ kg, 1000 W \/ kg v\u00e0 tu\u1ed5i th\u1ecd chu k\u1ef3 h\u1ee3p l\u00fd l\u00e0 500 chu k\u1ef3 [https:\/\/en .wikipedia.org\/wiki\/Cobasys]<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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C\u00f4ng ngh\u1ec7 pin Nickel Metal Hydride cho Xe Lai:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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N\u0103m 1992, theo th\u1ecfa thu\u1eadn h\u1ee3p t\u00e1c v\u1edbi DOE<\/a> , USABC \u0111\u00e3 kh\u1edfi x\u01b0\u1edbng vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00f4ng ngh\u1ec7 pin niken-kim lo\u1ea1i hy\u0111rua (pin Ni-MH).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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DOE t\u00e0i tr\u1ee3 th\u00f4ng qua th\u1ecfa thu\u1eadn h\u1ee3p t\u00e1c \u0111\u00f3 l\u00e0 c\u00f4ng c\u1ee5 \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u00f4ng ngh\u1ec7 Ni-MH t\u1ea1i hai nh\u00e0 s\u1ea3n xu\u1ea5t, Thi\u1ebft b\u1ecb Chuy\u1ec3n \u0111\u1ed5i N\u0103ng l\u01b0\u1ee3ng, Inc. (ECD Ovonics) v\u00e0 SAFT America. C\u00f4ng ngh\u1ec7 Ni-MH c\u1ee7a ECD Ovonics hi\u1ec7n \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t t\u1ea1i COBASYS, LLC, li\u00ean doanh s\u1ea3n xu\u1ea5t 50-50 v\u1edbi Chevron Technology Ventures, LLC. ECD c\u0169ng \u0111ang c\u1ea5p ph\u00e9p c\u00f4ng ngh\u1ec7 c\u1ee7a m\u00ecnh cho Sanyo, c\u00f4ng ty cung c\u1ea5p pin Ni-MH cho xe hybrid Ford Escape, Cmax v\u00e0 Fusion; cho Honda, cho c\u00e1c lo\u1ea1i xe hybrid c\u1ee7a n\u00f3; v\u00e0 cho Panasonic, c\u00f4ng ty cung c\u1ea5p pin cho xe hybrid c\u1ee7a Toyota. Theo c\u00e1c \u0111i\u1ec1u kho\u1ea3n c\u1ee7a h\u1ee3p \u0111\u1ed3ng ECD ban \u0111\u1ea7u, m\u1ed9t ph\u1ea7n nh\u1ecf ph\u00ed c\u1ea5p ph\u00e9p n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c n\u1ed9p cho DOE v\u00e0 USABC.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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N\u0103m 2008, th\u1ecb tr\u01b0\u1eddng Pin Nickel Metal Hydride<\/a> chi\u1ebfm 10% t\u1ed5ng ng\u00e0nh s\u1ea3n xu\u1ea5t pin s\u1ea1c. Nh\u1eefng l\u00fd do quan tr\u1ecdng cho s\u1ef1 ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng c\u1ee7a Ni-MH l\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a HEV v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c t\u1ebf b\u00e0o Ni-MH nh\u01b0 nh\u1eefng ch\u1ea5t thay th\u1ebf tr\u1ef1c ti\u1ebfp cho c\u00e1c t\u1ebf b\u00e0o s\u01a1 c\u1ea5p c\u00f3 t\u00ednh ki\u1ec1m.
H\u1ec7 th\u1ed1ng hy\u0111rua kim lo\u1ea1i niken t\u01b0\u01a1ng t\u1ef1 theo nhi\u1ec1u c\u00e1ch v\u1edbi t\u1ebf b\u00e0o Ni-Cd. Trong ph\u1ea3n \u1ee9ng t\u00e1i t\u1ed5 h\u1ee3p oxy c\u0169ng v\u1eady, h\u1ec7 th\u1ed1ng n\u00e0y t\u01b0\u01a1ng t\u1ef1 nh\u01b0 t\u1ebf b\u00e0o VRLA trong thi\u1ebft k\u1ebf khu\u1ebfch t\u00e1n oxy t\u1eeb PAM \u0111\u1ebfn NAM v\u00e0 thi\u1ebft k\u1ebf ch\u1ea5t \u0111i\u1ec7n ph\u00e2n \u0111\u00f3i.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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C\u00e1c \u01b0u \u0111i\u1ec3m c\u1ee7a pin Nickel Metal Hydride l\u00e0:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Chi ph\u00ed th\u1ea5p, k\u00edch th\u01b0\u1edbc t\u1ebf b\u00e0o linh ho\u1ea1t, \u0111\u1eb7c t\u00ednh hi\u1ec7u su\u1ea5t tuy\u1ec7t v\u1eddi (bao g\u1ed3m kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 d\u00f2ng \u0111i\u1ec7n s\u1ea1c cao), ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng r\u1ed9ng (-30 \u0111\u1ebfn 70\u00baC), s\u1ef1 an to\u00e0n khi ho\u1ea1t \u0111\u1ed9ng \u1edf \u0111i\u1ec7n \u00e1p cao h\u01a1n, (350 + V), \u0111i\u1ec1u khi\u1ec3n s\u1ea1c \u0111\u01a1n gi\u1ea3n quy tr\u00ecnh, v.v. H\u01a1n n\u1eefa, n\u00f3 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng (so v\u1edbi t\u1ebf b\u00e0o niken-cadmium).
T\u1ea5t nhi\u00ean, c\u0169ng c\u00f3 nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m: chi ph\u00ed cao h\u01a1n so v\u1edbi t\u1ebf b\u00e0o axit ch\u00ec, n\u0103ng l\u01b0\u1ee3ng c\u1ee5 th\u1ec3 th\u1ea5p h\u01a1n khi so s\u00e1nh v\u1edbi t\u1ebf b\u00e0o Li-ion.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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C\u00e1c ph\u1ea3n \u1ee9ng \u0111i\u1ec7n h\u00f3a t\u1ea1o ra n\u0103ng l\u01b0\u1ee3ng trong pin s\u1ea1c Nickel Metal Hydride<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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C\u00f3 r\u1ea5t nhi\u1ec1u \u0111i\u1ec3m gi\u1ed1ng nhau gi\u1eefa c\u00e1c t\u1ebf b\u00e0o Ni-Cd v\u00e0 Ni-MH, ngo\u1ea1i tr\u1eeb \u0111i\u1ec7n c\u1ef1c \u00e2m. Nh\u01b0 trong tr\u01b0\u1eddng h\u1ee3p t\u1ebf b\u00e0o Ni-Cd, trong qu\u00e1 tr\u00ecnh ph\u00f3ng \u0111i\u1ec7n, ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng t\u00edch c\u1ef1c (PAM), niken oxy hydroxit, b\u1ecb kh\u1eed th\u00e0nh niken hydroxit. (Do \u0111\u00f3 \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng<\/strong> ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u1ef1c \u00e2m<\/strong> ):<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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NiOOH + H 2<\/sub> O + e<\/em> \u2192 Ni (OH) 2<\/sub> + OH –<\/sup> E o<\/sub> = 0,52 V<\/p>

Ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng \u00e2m (NAM), hi\u0111rua kim lo\u1ea1i (MH), b\u1ecb oxi h\u00f3a th\u00e0nh h\u1ee3p kim kim lo\u1ea1i (M). (V\u00ec v\u1eady, \u0111i\u1ec7n c\u1ef1c \u00e2m<\/strong> ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u1ef1c d\u01b0\u01a1ng<\/strong> ):<\/p>

MH + OH –<\/sup> \u2192 M + H 2<\/sub> O + e<\/em> E o<\/sub> = 0,83 V<\/p>

T\u1ee9c l\u00e0, qu\u00e1 tr\u00ecnh gi\u1ea3i h\u1ea5p hydro x\u1ea3y ra trong qu\u00e1 tr\u00ecnh ph\u00f3ng \u0111i\u1ec7n v\u00e0 hydro k\u1ebft h\u1ee3p v\u1edbi ion hydroxyl \u0111\u1ec3 t\u1ea1o th\u00e0nh n\u01b0\u1edbc \u0111\u1ed3ng th\u1eddi \u0111\u00f3ng g\u00f3p m\u1ed9t \u0111i\u1ec7n t\u1eed v\u00e0o m\u1ea1ch.<\/p>

Ph\u1ea3n \u1ee9ng t\u1ed5ng th\u1ec3 khi ph\u00f3ng \u0111i\u1ec7n l\u00e0<\/p>

MH + NiOOH Ph\u00f3ng \u0111i\u1ec7n M + Ni (OH) 2<\/sub> E o<\/sub> = 1,35 V<\/p>

H\u00e3y nh\u1edb \u0111i\u1ec1u \u0111\u00f3<\/p>

\u0110i\u1ec7n \u00e1p t\u1ebf b\u00e0o = V T\u00edch c\u1ef1c<\/sub> – V \u00c2m t\u00ednh<\/sub><\/p>

0,52 – (-0,83) = 1,35 V<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\u1ede \u0111\u00e2y c\u1ea7n l\u01b0u \u00fd r\u1eb1ng c\u00e1c ph\u00e2n t\u1eed n\u01b0\u1edbc \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n trong c\u00e1c ph\u1ea3n \u1ee9ng c\u1ee7a m\u1ed9t n\u1eeda t\u1ebf b\u00e0o kh\u00f4ng xu\u1ea5t hi\u1ec7n trong ph\u1ea3n \u1ee9ng t\u1ed5ng th\u1ec3 ho\u1eb7c to\u00e0n b\u1ed9 t\u1ebf b\u00e0o. \u0110i\u1ec1u n\u00e0y l\u00e0 do ch\u1ea5t \u0111i\u1ec7n ph\u00e2n (dung d\u1ecbch kali hydroxit trong n\u01b0\u1edbc)<\/strong> kh\u00f4ng tham gia v\u00e0o ph\u1ea3n \u1ee9ng t\u1ea1o ra n\u0103ng l\u01b0\u1ee3ng v\u00e0 n\u00f3 ch\u1ec9 \u1edf \u0111\u00f3 v\u1edbi m\u1ee5c \u0111\u00edch d\u1eabn \u0111i\u1ec7n.<\/p>

C\u0169ng l\u01b0u \u00fd r\u1eb1ng dung d\u1ecbch n\u01b0\u1edbc c\u1ee7a axit sunfuric \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t \u0111i\u1ec7n ph\u00e2n trong c\u00e1c t\u1ebf b\u00e0o axit ch\u00ec th\u1ef1c s\u1ef1 tham gia v\u00e0o ph\u1ea3n \u1ee9ng nh\u01b0 h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y:<\/p>

X\u1ea3 PbO 2<\/sub> + Pb + 2H 2<\/sub> SO 4<\/sub> X\u1ea3 2PbSO 4<\/sub> + 2H 2<\/sub> O<\/p>

\u0110\u00e2y l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t quan tr\u1ecdng<\/strong> gi\u1eefa t\u1ebf b\u00e0o axit ch\u00ec v\u00e0 t\u1ebf b\u00e0o ki\u1ec1m. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Qu\u00e1 tr\u00ecnh \u0111\u01b0\u1ee3c \u0111\u1ea3o ng\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh s\u1ea1c<\/p>

T\u1ebf b\u00e0o hy\u0111rua kim lo\u1ea1i niken \u0111\u01b0\u1ee3c h\u00e0n k\u00edn s\u1eed d\u1ee5ng ph\u1ea3n \u1ee9ng t\u00e1i k\u1ebft h\u1ee3p oxy t\u01b0\u01a1ng t\u1ef1 nh\u01b0 ph\u1ea3n \u1ee9ng x\u1ea3y ra trong t\u1ebf b\u00e0o axit ch\u00ec \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1eb1ng van (VRLA), do \u0111\u00f3 ng\u0103n ch\u1eb7n s\u1ef1 t\u00edch t\u1ee5 \u00e1p su\u1ea5t c\u00f3 th\u1ec3 t\u1ea1o ra kh\u00ed \u1edf cu\u1ed1i \u0111i\u1ec7n t\u00edch v\u00e0 \u0111\u1eb7c bi\u1ec7t l\u00e0 trong th\u1eddi gian qu\u00e1 t\u1ea3i.<\/p>

Trong qu\u00e1 tr\u00ecnh t\u00edch \u0111i\u1ec7n, PAM \u0111\u1ea1t \u0111i\u1ec7n t\u00edch \u0111\u1ea7y tr\u01b0\u1edbc NAM v\u00e0 do \u0111\u00f3, \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng b\u1eaft \u0111\u1ea7u chuy\u1ec3n h\u00f3a oxy.<\/p>

2OH –<\/sup> <\/sup>\u2192 H2O + \u00bdO 2<\/sub> + 2e –<\/sup><\/p>

Kh\u00ed oxy khu\u1ebfch t\u00e1n qua c\u00e1c l\u1ed7 c\u1ee7a thi\u1ebft b\u1ecb ph\u00e2n t\u00e1ch \u0111\u1ebfn \u0111i\u1ec7n c\u1ef1c \u00e2m \u0111\u01b0\u1ee3c t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i b\u1edfi thi\u1ebft k\u1ebf b\u00ecnh \u0111i\u1ec7n ph\u00e2n d\u1ea1ng sao v\u00e0 s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb ph\u00e2n t\u00e1ch th\u00edch h\u1ee3p.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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T\u1ea1i NAM, oxy ph\u1ea3n \u1ee9ng v\u1edbi \u0111i\u1ec7n c\u1ef1c hi\u0111rua kim lo\u1ea1i \u0111\u1ec3 t\u1ea1o ra n\u01b0\u1edbc, do \u0111\u00f3 ng\u0103n ch\u1eb7n s\u1ef1 t\u00edch t\u1ee5 \u00e1p su\u1ea5t b\u00ean trong pin. M\u1eb7c d\u00f9 v\u1eady, v\u1eabn c\u00f3 van an to\u00e0n trong tr\u01b0\u1eddng h\u1ee3p s\u1ea1c qu\u00e1 m\u1ee9c k\u00e9o d\u00e0i ho\u1eb7c s\u1ef1 c\u1ed1 b\u1ed9 s\u1ea1c; c\u00f3 th\u1ec3 l\u00e0 oxy v\u00e0 hydro s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o ra nhanh h\u01a1n so v\u1edbi vi\u1ec7c n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1i t\u1ed5ng h\u1ee3p. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady, l\u1ed7 th\u00f4ng h\u01a1i an to\u00e0n s\u1ebd m\u1edf ra \u0111\u1ec3 gi\u1ea3m \u00e1p su\u1ea5t v\u00e0 ng\u0103n ng\u1eeba v\u1ee1 pin. L\u1ed7 th\u00f4ng h\u01a1i s\u1ebd \u0111\u00f3ng l\u1ea1i sau khi \u00e1p l\u1ef1c \u0111\u01b0\u1ee3c gi\u1ea3m b\u1edbt. Kh\u00ed tho\u00e1t ra qua l\u1ed7 th\u00f4ng h\u01a1i c\u00f3 th\u1ec3 b\u1ecbt k\u00edn l\u1ea1i c\u00f3 th\u1ec3 mang theo c\u00e1c gi\u1ecdt ch\u1ea5t \u0111i\u1ec7n ph\u00e2n, c\u00f3 th\u1ec3 t\u1ea1o th\u00e0nh tinh th\u1ec3 ho\u1eb7c r\u1ec9 s\u00e9t khi \u0111\u1ecdng l\u1ea1i tr\u00ean lon. (https:\/\/data.energizer.com\/pdfs\/nickelmetalhydride_appman.pdf) <\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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4MH + O2 \u2192 4M + 2H2O<\/p>

H\u01a1n n\u1eefa, theo thi\u1ebft k\u1ebf, NAM kh\u00f4ng \u0111\u01b0\u1ee3c s\u1ea1c \u0111\u1ea7y, \u0111i\u1ec1u n\u00e0y ng\u0103n c\u1ea3n vi\u1ec7c t\u1ea1o ra hydro. \u0110i\u1ec1u n\u00e0y \u0111\u00fang \u0111\u1ed1i v\u1edbi giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u1ea1p xe, n\u01a1i kh\u00ed duy nh\u1ea5t \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y b\u00ean trong t\u1ebf b\u00e0o l\u00e0 oxy. Tuy nhi\u00ean, khi ti\u1ebfp t\u1ee5c quay v\u00f2ng, kh\u00ed hydro b\u1eaft \u0111\u1ea7u ph\u00e1t tri\u1ec3n v\u00e0 quan s\u00e1t th\u1ea5y s\u1ef1 gia t\u0103ng \u0111\u00e1ng k\u1ec3 trong l\u01b0\u1ee3ng hydro theo t\u1ef7 l\u1ec7 b\u00ean trong. Do \u0111\u00f3, \u0111i\u1ec1u r\u1ea5t quan tr\u1ecdng l\u00e0 ph\u1ea3i ki\u1ec3m so\u00e1t \u0111i\u1ec7n \u00e1p s\u1ea1c khi k\u1ebft th\u00fac qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 trong qu\u00e1 tr\u00ecnh s\u1ea1c qu\u00e1 m\u1ee9c \u0111\u1ec3 h\u1ea1n ch\u1ebf vi\u1ec7c t\u1ea1o ra oxy xu\u1ed1ng d\u01b0\u1edbi t\u1ed1c \u0111\u1ed9 t\u00e1i k\u1ebft h\u1ee3p \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 t\u00edch t\u1ee5 c\u1ee7a kh\u00ed v\u00e0 \u00e1p su\u1ea5t.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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M\u1ed9t y\u1ebfu t\u1ed1 thi\u1ebft k\u1ebf \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp tr\u01b0\u1edbc \u0111\u00f3 trong thi\u1ebft k\u1ebf c\u1ee7a t\u1ebf b\u00e0o Ni-MH l\u00e0 t\u1ef7 l\u1ec7 NAM tr\u00ean PAM. D\u1ef1a theo
s\u1eed d\u1ee5ng nhi\u1ec1u NAM h\u01a1n PAM.
T\u1ef7 l\u1ec7 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c \u1ee9ng d\u1ee5ng v\u00e0 n\u1eb1m trong kho\u1ea3ng 1,3 \u0111\u1ebfn 2 (NAM \/ PAM), c\u00e1c gi\u00e1 tr\u1ecb th\u1ea5p h\u01a1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi n\u0103ng l\u01b0\u1ee3ng c\u1ee5 th\u1ec3 cao h\u01a1n l\u00e0 quan tr\u1ecdng trong khi c\u00e1c gi\u00e1 tr\u1ecb cao h\u01a1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c t\u1ebf b\u00e0o thi\u1ebft k\u1ebf v\u00f2ng \u0111\u1eddi d\u00e0i v\u00e0 c\u00f4ng su\u1ea5t cao.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Ch\u1ebf t\u1ea1o t\u1ebf b\u00e0o pin Nickel Metal Hydride<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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T\u1ebf b\u00e0o Ni-MH l\u00e0 t\u1ebf b\u00e0o \u0111\u01b0\u1ee3c b\u1ecbt k\u00edn b\u1eb1ng thi\u1ebft b\u1ecb an to\u00e0n, c\u00f3 v\u1ecf v\u00e0 \u0111\u1ec9nh b\u1eb1ng kim lo\u1ea1i, c\u1ea3 hai \u0111\u1ec1u \u0111\u01b0\u1ee3c c\u00e1ch nhi\u1ec7t v\u1edbi nhau b\u1eb1ng m\u1ed9t mi\u1ebfng \u0111\u1ec7m. \u0110\u00e1y th\u00f9ng l\u00e0 c\u1ef1c \u00e2m v\u00e0 tr\u00ean c\u00f9ng l\u00e0 c\u1ef1c d\u01b0\u01a1ng.
Trong t\u1ea5t c\u1ea3 c\u00e1c ki\u1ec3u thi\u1ebft k\u1ebf, cho d\u00f9 h\u00ecnh tr\u1ee5 hay l\u0103ng tr\u1ee5 ho\u1eb7c \u00f4 n\u00fat, c\u1ef1c \u00e2m l\u00e0 lo\u1ea1i thi\u00eau k\u1ebft ho\u1eb7c lo\u1ea1i d\u00e1n.
\u0110i\u1ec7n c\u1ef1c d\u01b0\u01a1ng trong t\u1ebf b\u00e0o Ni-MH h\u00ecnh tr\u1ee5 l\u00e0 ch\u1ea5t n\u1ec1n thi\u00eau k\u1ebft x\u1ed1p ho\u1eb7c ch\u1ea5t n\u1ec1n niken d\u1ea1ng b\u1ecdt, tr\u00ean \u0111\u00f3 c\u00e1c h\u1ee3p ch\u1ea5t niken \u0111\u01b0\u1ee3c ng\u00e2m t\u1ea9m ho\u1eb7c d\u00e1n, v\u00e0 chuy\u1ec3n \u0111\u1ed5i th\u00e0nh v\u1eadt li\u1ec7u ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch \u0111i\u1ec7n l\u1eafng.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Ch\u1ea5t n\u1ec1n \u0111\u00f3ng vai tr\u00f2 h\u1ed7 tr\u1ee3 c\u01a1 h\u1ecdc cho c\u1ea5u tr\u00fac thi\u00eau k\u1ebft ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ed9 thu d\u00f2ng \u0111i\u1ec7n cho c\u00e1c ph\u1ea3n \u1ee9ng \u0111i\u1ec7n h\u00f3a x\u1ea3y ra tr\u00ean kh\u1eafp c\u00e1c t\u1ea5m x\u1ed1p. N\u00f3 c\u0169ng cung c\u1ea5p \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc v\u00e0 t\u00ednh li\u00ean t\u1ee5c trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. S\u1eed d\u1ee5ng th\u00e9p m\u1ea1 niken \u0111\u1ee5c l\u1ed7 ho\u1eb7c d\u1ea3i niken nguy\u00ean ch\u1ea5t c\u00f3 chi\u1ec1u d\u00e0i li\u00ean t\u1ee5c, ho\u1eb7c s\u1eed d\u1ee5ng l\u01b0\u1edbi d\u1ec7t b\u1eb1ng niken ho\u1eb7c d\u00e2y th\u00e9p m\u1ea1 niken. Lo\u1ea1i \u0111\u1ee5c l\u1ed7 ph\u1ed5 bi\u1ebfn c\u00f3 th\u1ec3 d\u00e0y 0,1 mm v\u1edbi l\u1ed7 2 mm v\u00e0 di\u1ec7n t\u00edch kho\u1ea3ng tr\u1ed1ng kho\u1ea3ng 40%. Kim lo\u1ea1i m\u1edf r\u1ed9ng v\u00e0 t\u1ea5m \u0111\u1ee5c l\u1ed7 c\u00f3 gi\u00e1 th\u00e0nh th\u1ea5p h\u01a1n, nh\u01b0ng ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng t\u1ef7 l\u1ec7 cao k\u00e9m. C\u1ea5u tr\u00fac thi\u00eau k\u1ebft \u0111\u1eaft h\u01a1n nhi\u1ec1u nh\u01b0ng ph\u00f9 h\u1ee3p v\u1edbi hi\u1ec7u su\u1ea5t ph\u00f3ng \u0111i\u1ec7n cao.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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B\u1ecdt n\u00f3i chung \u0111\u00e3 thay th\u1ebf c\u00e1c \u0111i\u1ec7n c\u1ef1c m\u1ea3ng b\u00e1m thi\u00eau k\u1ebft.
T\u01b0\u01a1ng t\u1ef1, \u0111i\u1ec7n c\u1ef1c \u00e2m c\u0169ng l\u00e0 m\u1ed9t c\u1ea5u tr\u00fac c\u00f3 \u0111\u1ed9 x\u1ed1p cao b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t l\u00e1 ho\u1eb7c l\u01b0\u1edbi niken \u0111\u1ee5c l\u1ed7 tr\u00ean \u0111\u00f3 ph\u1ee7 h\u1ee3p kim l\u01b0u tr\u1eef hydro ho\u1ea1t t\u00ednh li\u00ean k\u1ebft b\u1eb1ng nh\u1ef1a. C\u00e1c \u0111i\u1ec7n c\u1ef1c \u0111\u01b0\u1ee3c ng\u0103n c\u00e1ch b\u1eb1ng v\u1eadt li\u1ec7u kh\u00f4ng d\u1ec7t t\u1ed5ng h\u1ee3p, v\u1eadt li\u1ec7u n\u00e0y \u0111\u00f3ng vai tr\u00f2 c\u00e1ch \u0111i\u1ec7n gi\u1eefa hai \u0111i\u1ec7n c\u1ef1c v\u00e0 l\u00e0 m\u00f4i tr\u01b0\u1eddng h\u1ea5p th\u1ee5 ch\u1ea5t \u0111i\u1ec7n ph\u00e2n.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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V\u1eadt li\u1ec7u ho\u1ea1t \u0111\u1ed9ng t\u00edch c\u1ef1c (v\u1eadt li\u1ec7u l\u00e0m cat\u1ed1t) trong Pin Nickel Metal Hydride <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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T\u01b0\u01a1ng t\u1ef1 nh\u01b0 t\u1ebf b\u00e0o Ni-Cd, c\u00e1c \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng trong t\u1ebf b\u00e0o Ni-MH, d\u00f9 l\u00e0 h\u00ecnh tr\u1ee5 hay l\u0103ng tr\u1ee5, \u0111\u1ec1u s\u1eed d\u1ee5ng lo\u1ea1i thi\u00eau k\u1ebft ho\u1eb7c d\u00e1n. Niken hydroxit \u0111\u1ec3 s\u1eed d\u1ee5ng trong t\u1ebf b\u00e0o Ni-MH v\u1ec1 c\u01a1 b\u1ea3n gi\u1ed1ng nh\u01b0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong Ni-Cd. Niken hydroxit hi\u1ec7u su\u1ea5t cao ng\u00e0y nay \u0111\u01b0\u1ee3c n\u00e2ng cao h\u01a1n v\u1ec1 c\u00f4ng su\u1ea5t, h\u1ec7 s\u1ed1 s\u1eed d\u1ee5ng, kh\u1ea3 n\u0103ng c\u1ea5p ngu\u1ed3n v\u00e0 t\u1ed1c \u0111\u1ed9 ph\u00f3ng \u0111i\u1ec7n, v\u00f2ng \u0111\u1eddi, hi\u1ec7u qu\u1ea3 s\u1ea1c \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 chi ph\u00ed.
Niken hydroxit m\u1eadt \u0111\u1ed9 cao v\u1edbi c\u00e1c h\u1ea1t h\u00ecnh c\u1ea7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t trong c\u00e1c \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng \u0111\u01b0\u1ee3c d\u00e1n. \/ v\u1eadt li\u1ec7u n\u00f3i tr\u00ean \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb trong c\u00e1c bu\u1ed3ng k\u1ebft t\u1ee7a, n\u01a1i niken sunfat (c\u00f9ng v\u1edbi m\u1ed9t s\u1ed1 ch\u1ea5t ph\u1ee5 gia nh\u01b0 mu\u1ed1i coban v\u00e0 k\u1ebdm \u0111\u1ec3 c\u1ea3i thi\u1ec7n c\u00e1c kh\u00eda c\u1ea1nh hi\u1ec7u su\u1ea5t) \u0111\u01b0\u1ee3c ph\u1ea3n \u1ee9ng v\u1edbi natri hydroxit tr\u1ed9n v\u1edbi m\u1ed9t \u00edt amoniac. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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T\u1ea5m d\u01b0\u01a1ng t\u00ednh \u0111\u01b0\u1ee3c d\u00e1n ph\u1ed5 bi\u1ebfn h\u01a1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng c\u00e1ch d\u00e1n m\u1ed9t c\u00e1ch c\u01a1 h\u1ecdc niken hydroxit h\u00ecnh c\u1ea7u m\u1eadt \u0111\u1ed9 cao v\u00e0o c\u00e1c l\u1ed7 x\u1ed1p c\u1ee7a ch\u1ea5t n\u1ec1n kim lo\u1ea1i b\u1ecdt, sau \u0111\u00f3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng c\u00e1ch ph\u1ee7 b\u1ecdt polyurethane (PUF) v\u1edbi m\u1ed9t l\u1edbp niken b\u1eb1ng c\u00e1ch m\u1ea1 \u0111i\u1ec7n ho\u1eb7c b\u1eb1ng h\u00f3a ch\u1ea5t l\u1eafng \u0111\u1ecdng h\u01a1i. Ti\u1ebfp theo l\u00e0 qu\u00e1 tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ec3 lo\u1ea1i b\u1ecf polyurethane g\u1ed1c. K\u00edch th\u01b0\u1edbc l\u1ed7 x\u1ed1p v\u00e0 m\u1eadt \u0111\u1ed9 c\u1ee7a b\u1ecdt c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 c\u1ea3i thi\u1ec7n c\u00e1c \u0111\u1eb7c t\u00ednh ho\u1ea1t \u0111\u1ed9ng.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Sau \u0111\u00f3, b\u1ecdt \u0111\u01b0\u1ee3c n\u1ea1p v\u1edbi niken hydroxit trong m\u1ed9t ch\u1ea5t nh\u00e3o c\u00f3 ch\u1ee9a c\u00e1c oxit coban d\u1eabn \u0111i\u1ec7n, t\u1ea1o th\u00e0nh m\u1ed9t m\u1ea1ng l\u01b0\u1edbi d\u1eabn \u0111i\u1ec7n gi\u1eefa niken hydroxit v\u00e0 b\u1ed9 thu d\u00f2ng \u0111i\u1ec7n kim lo\u1ea1i. C\u0169ng gi\u1ed1ng nh\u01b0 ch\u00ec sulphat trong t\u1ebf b\u00e0o axit ch\u00ec, niken hydroxit l\u00e0 ch\u1ea5t d\u1eabn \u0111i\u1ec7n k\u00e9m. B\u00e2y gi\u1edd t\u1ea5m x\u1ed1p \u0111\u00e3 s\u1eb5n s\u00e0ng cho b\u01b0\u1edbc ti\u1ebfp theo.
Lo\u1ea1i \u0111i\u1ec7n c\u1ef1c kh\u00e1c l\u00e0 \u0111i\u1ec7n c\u1ef1c thi\u00eau k\u1ebft.<\/strong> Lo\u1ea1i n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng c\u1ea5p ngu\u1ed3n t\u1ed1t h\u01a1n nh\u01b0ng gi\u00e1 th\u00e0nh c\u00f4ng su\u1ea5t th\u1ea5p h\u01a1n v\u00e0 gi\u00e1 th\u00e0nh cao h\u01a1n.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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D\u01b0\u01a1ng t\u00ednh thi\u00eau k\u1ebft<\/strong> b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c d\u00e1n niken d\u1ea1ng s\u1ee3i l\u00ean m\u1ed9t ch\u1ea5t n\u1ec1n nh\u01b0 gi\u1ea5y b\u1ea1c \u0111\u1ee5c l\u1ed7, n\u01a1i c\u00e1c s\u1ee3i niken sau \u0111\u00f3 \u0111\u01b0\u1ee3c thi\u00eau k\u1ebft trong l\u00f2 \u1ee7 nhi\u1ec7t \u0111\u1ed9 cao trong m\u00f4i tr\u01b0\u1eddng kh\u1eed s\u1eed d\u1ee5ng nit\u01a1 \/ hydro. Trong qu\u00e1 tr\u00ecnh n\u00e0y, c\u00e1c ch\u1ea5t k\u1ebft d\u00ednh t\u1eeb qu\u00e1 tr\u00ecnh d\u00e1n b\u1ecb \u0111\u1ed1t ch\u00e1y \u0111i, \u0111\u1ec3 l\u1ea1i m\u1ed9t khung d\u1eabn \u0111i\u1ec7n b\u1eb1ng niken.
Niken hydroxit sau \u0111\u00f3 \u0111\u01b0\u1ee3c k\u1ebft t\u1ee7a v\u00e0o c\u00e1c l\u1ed7 c\u1ee7a b\u1ed9 x\u01b0\u01a1ng thi\u00eau k\u1ebft b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng h\u00f3a ch\u1ea5t
ho\u1eb7c qu\u00e1 tr\u00ecnh t\u1ea9m \u0111i\u1ec7n h\u00f3a. C\u00e1c \u0111i\u1ec7n c\u1ef1c ng\u00e2m t\u1ea9m sau \u0111\u00f3 \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh ho\u1eb7c k\u00edch ho\u1ea1t tr\u01b0\u1edbc
trong m\u1ed9t qu\u00e1 tr\u00ecnh chu k\u1ef3 n\u1ea1p \/ ph\u00f3ng \u0111i\u1ec7n \u0111i\u1ec7n h\u00f3a. B\u00e2y gi\u1edd t\u1ea5m thi\u00eau k\u1ebft \u0111\u00e3 s\u1eb5n s\u00e0ng cho b\u01b0\u1edbc ti\u1ebfp theo.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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H\u1ee3p kim hydrua kim lo\u1ea1i cho \u0111i\u1ec7n c\u1ef1c \u00e2m (v\u1eadt li\u1ec7u l\u00e0m c\u1ef1c d\u01b0\u01a1ng)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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T\u1ebf b\u00e0o Ni-MH s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u ho\u1ea1t \u0111\u1ed9ng hydrua kim lo\u1ea1i \u1edf d\u1ea1ng h\u1ee3p kim h\u1ea5p th\u1ee5 hydro. C\u00f3 m\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n kh\u00e1c nhau cho h\u1ee3p kim. H\u1ecd \u0111ang:<\/p>

  1. H\u1ee3p kim AB5<\/li>
  2. H\u1ee3p kim AB2<\/li>
  3. H\u1ee3p kim A2B7 <\/li><\/ol>

    \u0110\u00e2y l\u00e0 nh\u1eefng h\u1ee3p kim \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb c\u00e1c kim lo\u1ea1i \u0111\u1ea5t hi\u1ebfm v\u1edbi t\u1ef7 l\u1ec7 kh\u00e1c nhau. Vi\u1ec7c m\u00f4 t\u1ea3 qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1eb7c t\u00ednh c\u1ee7a c\u00e1c h\u1ee3p kim n\u00e0y n\u1eb1m ngo\u00e0i ph\u1ea1m vi c\u1ee7a b\u00e0i vi\u1ebft n\u00e0y. \u0110\u1ed9c gi\u1ea3 vui l\u00f2ng tham kh\u1ea3o c\u00e1c \u1ea5n ph\u1ea9m li\u00ean quan v\u1ec1 c\u00e1c h\u1ee3p kim n\u00e0y v\u00e0 s\u00e1ch chuy\u00ean ng\u00e0nh v\u1ec1 pin Ni-MH.
    \u0110i\u1ec7n c\u1ef1c \u00e2m l\u1ea1i l\u00e0 m\u1ed9t c\u1ea5u tr\u00fac c\u00f3 \u0111\u1ed9 x\u1ed1p cao b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t l\u00e1 ho\u1eb7c l\u01b0\u1edbi niken \u0111\u1ee5c l\u1ed7 m\u00e0 tr\u00ean \u0111\u00f3 h\u1ee3p kim l\u01b0u tr\u1eef hydro ho\u1ea1t t\u00ednh li\u00ean k\u1ebft b\u1eb1ng nh\u1ef1a \u0111\u01b0\u1ee3c ph\u1ee7 v\u00e0 x\u1eed l\u00fd.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Ch\u1ea5t \u0111i\u1ec7n ph\u00e2n trong pin hy\u0111rua kim lo\u1ea1i Niken<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Gi\u1ed1ng nh\u01b0 trong t\u1ebf b\u00e0o Ni-Cd, ch\u1ea5t \u0111i\u1ec7n ph\u00e2n trong t\u1ebf b\u00e0o Ni-MH l\u00e0 dung d\u1ecbch n\u01b0\u1edbc ch\u1ee9a kho\u1ea3ng 30% kali hydroxit, cung c\u1ea5p \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n cao trong m\u1ed9t ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 r\u1ed9ng. Lithium hydroxide (LiOH) lu\u00f4n l\u00e0 m\u1ed9t ch\u1ea5t ph\u1ee5 gia \u1edf n\u1ed3ng \u0111\u1ed9 kho\u1ea3ng 17 gam \/ l\u00edt (GPL). \u0110i\u1ec1u n\u00e0y gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 s\u1ea1c \u1edf \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng b\u1eb1ng c\u00e1ch ng\u0103n ch\u1eb7n ph\u1ea3n \u1ee9ng ti\u1ebfn h\u00f3a oxy, m\u1ed9t ph\u1ea3n \u1ee9ng c\u1ea1nh tranh l\u00e0m gi\u1ea3m \u0111i\u1ec7n t\u00edch ch\u1ea5p nh\u1eadn.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Nh\u01b0 trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a t\u1ebf b\u00e0o VRLA v\u00e0 Ni-Cd, t\u1ebf b\u00e0o Ni-MH c\u0169ng thu\u1ed9c lo\u1ea1i thi\u1ebft k\u1ebf ch\u1ea5t \u0111i\u1ec7n ph\u00e2n k\u00edn, b\u1ecb b\u1ecf \u0111\u00f3i. C\u00e1c t\u1ea5m g\u1ea7n nh\u01b0 b\u00e3o h\u00f2a v\u1edbi ch\u1ea5t \u0111i\u1ec7n ph\u00e2n. B\u1ed9 t\u00e1ch ch\u1ec9 b\u00e3o h\u00f2a m\u1ed9t ph\u1ea7n \u0111\u1ec3 cho ph\u00e9p khu\u1ebfch t\u00e1n kh\u00ed nhanh ch\u00f3ng cho ph\u1ea3n \u1ee9ng t\u00e1i h\u1ee3p kh\u00ed hi\u1ec7u qu\u1ea3. Th\u00eam NaOH gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t t\u00edch \u0111i\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 cao, nh\u01b0ng v\u1edbi chi ph\u00ed l\u00e0 gi\u1ea3m tu\u1ed5i th\u1ecd do NAM b\u1ecb \u0103n m\u00f2n cao.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    B\u1ed9 t\u00e1ch pin b\u1eb1ng hi\u0111rua kim lo\u1ea1i Niken<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Ch\u1ee9c n\u0103ng c\u1ee7a b\u1ed9 ph\u00e2n t\u00e1ch<\/a> l\u00e0 ng\u0103n s\u1ef1 ti\u1ebfp x\u00fac \u0111i\u1ec7n gi\u1eefa c\u00e1c \u0111i\u1ec7n c\u1ef1c \u00e2m v\u00e0 d\u01b0\u01a1ng trong khi v\u1eabn gi\u1eef l\u1ea1i ch\u1ea5t \u0111i\u1ec7n ph\u00e2n c\u1ea7n thi\u1ebft cho qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n ion. C\u00e1c thi\u1ebft b\u1ecb ph\u00e2n t\u00e1ch th\u1ebf h\u1ec7 \u0111\u1ea7u ti\u00ean cho t\u1ebf b\u00e0o Ni-MH l\u00e0 v\u1eadt li\u1ec7u ph\u00e2n t\u00e1ch Ni-Cd v\u00e0 NiH2 ti\u00eau chu\u1ea9n c\u1ee7a thi\u1ebft b\u1ecb t\u00e1ch v\u1ea3i kh\u00f4ng d\u1ec7t polyamit (nylon). Tuy nhi\u00ean, c\u00e1c t\u1ebf b\u00e0o Ni-MH t\u1ecf ra nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi qu\u00e1 tr\u00ecnh t\u1ef1 ph\u00f3ng \u0111i\u1ec7n, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb ph\u00e2n t\u00e1ch nh\u01b0 v\u1eady. S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a kh\u00ed oxy v\u00e0 hydro l\u00e0m cho c\u00e1c v\u1eadt li\u1ec7u polyamide trong thi\u1ebft b\u1ecb t\u00e1ch nylon b\u1ecb ph\u00e2n h\u1ee7y.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    C\u00e1c s\u1ea3n ph\u1ea9m \u0103n m\u00f2n (ion nitrit) t\u1eeb s\u1ef1 ph\u00e2n h\u1ee7y n\u00e0y cho ph\u00e9p \u0111\u1ea7u \u0111\u1ed9c niken hydroxit, th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh oxy h\u00f3a s\u1edbm v\u00e0 c\u0169ng t\u1ea1o th\u00e0nh c\u00e1c h\u1ee3p ch\u1ea5t c\u00f3 kh\u1ea3 n\u0103ng oxy h\u00f3a kh\u1eed gi\u1eefa hai \u0111i\u1ec7n c\u1ef1c, l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ef1 ph\u00f3ng \u0111i\u1ec7n. Do \u0111\u00f3 hi\u1ec7n nay kh\u00f4ng s\u1eed d\u1ee5ng lo\u1ea1i d\u1ea3i ph\u00e2n c\u00e1ch n\u00e0y. Thay v\u00e0o \u0111\u00f3, b\u1ed9 ph\u00e2n t\u00e1ch polyolefin \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c t\u1ebf b\u00e0o th\u1ebf h\u1ec7 ti\u1ebfp theo. \u201cPolypropylene c\u00f3 th\u1ec3 l\u00e0m \u01b0\u1edbt v\u0129nh vi\u1ec5n\u201d hi\u1ec7n \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i. Thi\u1ebft b\u1ecb ph\u00e2n t\u00e1ch c\u1ea3i ti\u1ebfn l\u00e0 h\u1ed7n h\u1ee3p PP v\u00e0 PE v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd \u0111\u1eb7c bi\u1ec7t. T\u1ed1c \u0111\u1ed9 t\u1ef1 x\u1ea3 v\u00e0 v\u00f2ng \u0111\u1eddi c\u1ee7a chu tr\u00ecnh b\u1ecb \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 v\u1edbi k\u1ebft c\u1ea5u, kh\u1ea3 n\u0103ng th\u1ea5m \u01b0\u1edbt v\u00e0 t\u00ednh th\u1ea5m kh\u00ed.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Pin\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    \n\t\t\t\t\t\t\t\t\t\t\"pin\t\t\t\t\t\t\t\t\t\t\t
    pin NiMh b\u1ecb l\u1ed7i do van an to\u00e0n b\u1ecb l\u1ed7i<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

    C\u00f4ng ngh\u1ec7 pin Nickel Metal Hydride (pin NiMh d\u1ea1ng \u0111\u1ea7y \u0111\u1ee7) C\u00f4ng tr\u00ecnh ti\u00ean phong v\u1ec1 Pin Nickel Metal Hydride \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i Trung t\u00e2m Nghi\u00ean c\u1ee9u Battelle Geneva b\u1eaft \u0111\u1ea7u sau ph\u00e1t minh c\u1ee7a n\u00f3 v\u00e0o n\u0103m 1967 d\u01b0\u1edbi d\u1ea1ng m\u1ed9t d\u1eabn xu\u1ea5t c\u1ee7a pin bot Ni-Cd v\u00e0 Ni-H2 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong […]<\/p>\n","protected":false},"author":1,"featured_media":25459,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[388],"tags":[],"class_list":["post-35753","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hoa-chat"],"_links":{"self":[{"href":"https:\/\/microtexindia.com\/vi\/wp-json\/wp\/v2\/posts\/35753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/microtexindia.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microtexindia.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microtexindia.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microtexindia.com\/vi\/wp-json\/wp\/v2\/comments?post=35753"}],"version-history":[{"count":1,"href":"https:\/\/microtexindia.com\/vi\/wp-json\/wp\/v2\/posts\/35753\/revisions"}],"predecessor-version":[{"id":66568,"href":"https:\/\/microtexindia.com\/vi\/wp-json\/wp\/v2\/posts\/35753\/revisions\/66568"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microtexindia.com\/vi\/wp-json\/wp\/v2\/media\/25459"}],"wp:attachment":[{"href":"https:\/\/microtexindia.com\/vi\/wp-json\/wp\/v2\/media?parent=35753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microtexindia.com\/vi\/wp-json\/wp\/v2\/categories?post=35753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microtexindia.com\/vi\/wp-json\/wp\/v2\/tags?post=35753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}