{"id":19948,"date":"2021-08-26T08:51:52","date_gmt":"2021-08-26T08:51:52","guid":{"rendered":"http:\/\/dgbellvietnam.com\/cycle-life-analysis-of-lithium-ion-battery\/"},"modified":"2024-11-15T15:01:41","modified_gmt":"2024-11-15T08:01:41","slug":"cycle-life-analysis-of-lithium-ion-battery","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/cycle-life-analysis-of-lithium-ion-battery\/","title":{"rendered":"Ph\u00e2n t\u00edch v\u00f2ng \u0111\u1eddi c\u1ee7a pin Lithium-ion"},"content":{"rendered":"
\n

\u0110\u1ed1i v\u1edbi pin lithium-ion l\u00fd t\u01b0\u1edfng, s\u1ef1 c\u00e2n b\u1eb1ng dung l\u01b0\u1ee3ng s\u1ebd kh\u00f4ng thay \u0111\u1ed5i trong chu k\u1ef3 c\u1ee7a n\u00f3 v\u00e0 dung l\u01b0\u1ee3ng ban \u0111\u1ea7u trong m\u1ed7i chu k\u1ef3 ph\u1ea3i l\u00e0 m\u1ed9t gi\u00e1 tr\u1ecb nh\u1ea5t \u0111\u1ecbnh. Tr\u00ean th\u1ef1c t\u1ebf, t\u00ecnh h\u00ecnh ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u. B\u1ea5t k\u1ef3 ph\u1ea3n \u1ee9ng ph\u1ee5 n\u00e0o c\u00f3 th\u1ec3 kh\u1edfi t\u1ea1o ho\u1eb7c ti\u00eau th\u1ee5 ion lithium \u0111\u1ec1u c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 thay \u0111\u1ed5i c\u00e2n b\u1eb1ng dung l\u01b0\u1ee3ng pin. \u0110i\u1ec1u n\u00e0y s\u1ebd c\u00f3 t\u00e1c \u0111\u1ed9ng nghi\u00eam tr\u1ecdng \u0111\u1ebfn hi\u1ec7u su\u1ea5t chu k\u1ef3 c\u1ee7a pin.<\/span><\/span><\/p>\n

C\u00f3 nhi\u1ec1u y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd chu k\u1ef3 c\u1ee7a pin lithium-ion, nh\u01b0ng l\u00fd do c\u01a1 b\u1ea3n l\u00e0 s\u1ed1 l\u01b0\u1ee3ng ion lithium tham gia v\u00e0o qu\u00e1 tr\u00ecnh truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng \u0111ang gi\u1ea3m. C\u1ea7n l\u01b0u \u00fd r\u1eb1ng t\u1ed5ng l\u01b0\u1ee3ng lithium trong pin kh\u00f4ng gi\u1ea3m, nh\u01b0ng c\u00f3 \u00edt ion lithium “\u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t” h\u01a1n. Ch\u00fang b\u1ecb gi\u1edbi h\u1ea1n \u1edf nh\u1eefng n\u01a1i kh\u00e1c ho\u1eb7c k\u00eanh ho\u1ea1t \u0111\u1ed9ng b\u1ecb ch\u1eb7n v\u00e0 kh\u00f4ng th\u1ec3 t\u1ef1 do tham gia v\u00e0o qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 tu\u1ea7n ho\u00e0n.<\/span><\/span><\/p>\n

Sau \u0111\u00f3, ch\u1ec9 c\u1ea7n t\u00ecm ra c\u00e1c ion lithium tham gia ph\u1ea3n \u1ee9ng oxy h\u00f3a kh\u1eed \u0111\u00e3 bi\u1ebfn \u0111i \u0111\u00e2u, ch\u00fang ta c\u00f3 th\u1ec3 t\u00ecm ra c\u01a1 ch\u1ebf suy gi\u1ea3m dung l\u01b0\u1ee3ng v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p c\u1ee5 th\u1ec3 \u0111\u1ec3 tr\u00ec ho\u00e3n xu h\u01b0\u1edbng suy gi\u1ea3m dung l\u01b0\u1ee3ng c\u1ee7a pin lithium-ion v\u00e0 c\u1ea3i thi\u1ec7n tu\u1ed5i th\u1ecd c\u1ee7a pin lithium-ion.<\/span><\/span><\/p>\n

1. S\u1ef1 l\u1eafng \u0111\u1ecdng c\u1ee7a kim lo\u1ea1i liti<\/span><\/span><\/span><\/h3>\n

Qua qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y tr\u01b0\u1edbc \u0111\u00f3, ch\u00fang ta bi\u1ebft r\u1eb1ng lithium kh\u00f4ng n\u00ean t\u1ed3n t\u1ea1i \u1edf d\u1ea1ng kim lo\u1ea1i lithium trong pin lithium-ion. C\u00e1c nguy\u00ean t\u1ed1 lithium t\u1ed3n t\u1ea1i \u1edf d\u1ea1ng oxit kim lo\u1ea1i, h\u1ee3p ch\u1ea5t cacbon lithium ho\u1eb7c ion.<\/span><\/span><\/p>\n

Tr\u00ean b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c \u00e2m, kim lo\u1ea1i liti d\u1ec5 l\u1eafng \u0111\u1ecdng. V\u00ec m\u1ed9t s\u1ed1 l\u00fd do, khi c\u00e1c ion liti di chuy\u1ec3n \u0111\u1ebfn b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c \u00e2m, m\u1ed9t s\u1ed1 ion liti kh\u00f4ng \u0111i v\u00e0o v\u1eadt li\u1ec7u ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111i\u1ec7n c\u1ef1c \u00e2m \u0111\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c h\u1ee3p ch\u1ea5t \u1ed5n \u0111\u1ecbnh, m\u00e0 l\u1eafng \u0111\u1ecdng tr\u00ean b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c \u00e2m \u0111\u1ec3 tr\u1edf th\u00e0nh kim lo\u1ea1i liti sau khi thu \u0111\u01b0\u1ee3c electron, v\u00e0 kh\u00f4ng c\u00f2n tham gia v\u00e0o qu\u00e1 tr\u00ecnh chu tr\u00ecnh ti\u1ebfp theo, d\u1eabn \u0111\u1ebfn gi\u1ea3m dung l\u01b0\u1ee3ng.<\/span><\/span><\/p>\n

T\u00ecnh tr\u1ea1ng n\u00e0y th\u01b0\u1eddng do m\u1ed9t s\u1ed1 l\u00fd do sau: s\u1ea1c v\u01b0\u1ee3t qu\u00e1 \u0111i\u1ec7n \u00e1p ng\u1eaft; S\u1ea1c t\u1ed1c \u0111\u1ed9 cao; V\u1eadt li\u1ec7u \u00e2m kh\u00f4ng \u0111\u1ee7. Khi s\u1ea1c qu\u00e1 m\u1ee9c ho\u1eb7c v\u1eadt li\u1ec7u cat\u1ed1t kh\u00f4ng \u0111\u1ee7, cat\u1ed1t kh\u00f4ng th\u1ec3 ch\u1ee9a c\u00e1c ion lithium di chuy\u1ec3n t\u1eeb cat\u1ed1t, d\u1eabn \u0111\u1ebfn l\u1eafng \u0111\u1ecdng kim lo\u1ea1i lithium. Trong qu\u00e1 tr\u00ecnh s\u1ea1c t\u1ed1c \u0111\u1ed9 cao, l\u01b0\u1ee3ng ion lithium \u0111\u1ebfn \u0111i\u1ec7n c\u1ef1c \u00e2m trong th\u1eddi gian ng\u1eafn qu\u00e1 l\u1edbn, d\u1eabn \u0111\u1ebfn t\u1eafc ngh\u1ebdn v\u00e0 l\u1eafng \u0111\u1ecdng.<\/span><\/span><\/p>\n

S\u1ef1 l\u1eafng \u0111\u1ecdng c\u1ee7a kim lo\u1ea1i lithium kh\u00f4ng ch\u1ec9 l\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd chu k\u1ef3 m\u00e0 c\u00f2n d\u1eabn \u0111\u1ebfn \u0111o\u1ea3n m\u1ea1ch d\u01b0\u01a1ng v\u00e0 \u00e2m, g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 nghi\u00eam tr\u1ecdng v\u1ec1 an to\u00e0n.<\/span><\/span><\/p>\n

\u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, ch\u00fang ta n\u00ean k\u1ebft h\u1ee3p h\u1ee3p l\u00fd v\u1eadt li\u1ec7u d\u01b0\u01a1ng v\u00e0 \u00e2m, \u0111\u1ed3ng th\u1eddi h\u1ea1n ch\u1ebf nghi\u00eam ng\u1eb7t \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng c\u1ee7a pin lithium-ion \u0111\u1ec3 tr\u00e1nh v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n s\u1eed d\u1ee5ng. T\u1ea5t nhi\u00ean, b\u1eaft \u0111\u1ea7u t\u1eeb hi\u1ec7u su\u1ea5t ph\u00f3ng \u0111\u1ea1i, tu\u1ed5i th\u1ecd chu k\u1ef3 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n c\u1ee5c b\u1ed9.<\/span><\/span><\/p>\n

2. Ph\u00e2n t\u00edch v\u1eadt li\u1ec7u cat\u1ed1t<\/span><\/span><\/span><\/h3>\n

M\u1eb7c d\u00f9 v\u1eadt li\u1ec7u cat\u1ed1t c\u00f3 ch\u1ee9a oxit kim lo\u1ea1i lithium c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh \u0111\u1ee7 cao nh\u01b0ng trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng l\u00e2u d\u00e0i v\u1eabn ti\u1ebfp t\u1ee5c ph\u00e2n t\u00edch, m\u1ed9t s\u1ed1 ch\u1ea5t tr\u01a1 v\u1ec1 m\u1eb7t \u0111i\u1ec7n h\u00f3a (nh\u01b0 Co3O4, Mn2O3, v.v.) v\u00e0 m\u1ed9t s\u1ed1 kh\u00ed d\u1ec5 ch\u00e1y s\u1ebd ph\u00e1t sinh, ph\u00e1 h\u1ee7y s\u1ef1 c\u00e2n b\u1eb1ng \u0111i\u1ec7n dung gi\u1eefa c\u00e1c \u0111i\u1ec7n c\u1ef1c v\u00e0 g\u00e2y ra t\u00ecnh tr\u1ea1ng m\u1ea5t \u0111i\u1ec7n dung kh\u00f4ng th\u1ec3 ph\u1ee5c h\u1ed3i.<\/span><\/span><\/p>\n

T\u00ecnh tr\u1ea1ng n\u00e0y \u0111\u1eb7c bi\u1ec7t r\u00f5 r\u00e0ng trong tr\u01b0\u1eddng h\u1ee3p s\u1ea1c qu\u00e1 m\u1ee9c, th\u1eadm ch\u00ed \u0111\u00f4i khi c\u00f2n x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng ph\u00e2n t\u00edch v\u00e0 gi\u1ea3i ph\u00f3ng kh\u00ed d\u1eef d\u1ed9i, kh\u00f4ng ch\u1ec9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn dung l\u01b0\u1ee3ng pin m\u00e0 c\u00f2n g\u00e2y ra r\u1ee7i ro an to\u00e0n nghi\u00eam tr\u1ecdng.<\/span><\/span><\/p>\n

Ngo\u00e0i vi\u1ec7c h\u1ea1n ch\u1ebf nghi\u00eam ng\u1eb7t \u0111i\u1ec7n \u00e1p ng\u1eaft s\u1ea1c c\u1ee7a pin, c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc v\u00e0 nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u cat\u1ed1t c\u0169ng l\u00e0 m\u1ed9t c\u00e1ch kh\u1ea3 thi \u0111\u1ec3 gi\u1ea3m t\u1ed1c \u0111\u1ed9 suy gi\u1ea3m tu\u1ed5i th\u1ecd chu k\u1ef3.<\/span><\/span><\/p>\n

3. L\u1edbp m\u00e0ng SEI tr\u00ean b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c<\/span><\/span><\/span><\/h3>\n

Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp tr\u01b0\u1edbc \u0111\u00f3, \u0111\u1ed1i v\u1edbi pin lithium-ion c\u00f3 v\u1eadt li\u1ec7u carbon l\u00e0m \u0111i\u1ec7n c\u1ef1c \u00e2m, trong chu k\u1ef3 \u0111\u1ea7u ti\u00ean, ch\u1ea5t \u0111i\u1ec7n ph\u00e2n s\u1ebd h\u00ecnh th\u00e0nh m\u1ed9t l\u1edbp m\u00e0ng ch\u1ea5t \u0111i\u1ec7n ph\u00e2n r\u1eafn (SEI) tr\u00ean b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c. C\u00e1c v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c \u00e2m kh\u00e1c nhau s\u1ebd c\u00f3 m\u1ed9t s\u1ed1 kh\u00e1c bi\u1ec7t nh\u1ea5t \u0111\u1ecbnh, nh\u01b0ng c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a m\u00e0ng SEI ch\u1ee7 y\u1ebfu bao g\u1ed3m lithium carbonate, lithium alkyl este, lithium hydroxide, v.v. t\u1ea5t nhi\u00ean, c\u0169ng c\u00f3 c\u00e1c s\u1ea3n ph\u1ea9m ph\u00e2n t\u00edch mu\u1ed1i, c\u0169ng nh\u01b0 m\u1ed9t s\u1ed1 polyme.<\/span><\/span><\/p>\n

Qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh m\u00e0ng SEI s\u1ebd ti\u00eau th\u1ee5 c\u00e1c ion lithium trong pin v\u00e0 m\u00e0ng SEI kh\u00f4ng \u1ed5n \u0111\u1ecbnh. N\u00f3 s\u1ebd ti\u1ebfp t\u1ee5c b\u1ecb ph\u00e1 v\u1ee1 trong chu k\u1ef3, \u0111\u1ec3 l\u1ed9 c\u00e1c b\u1ec1 m\u1eb7t carbon m\u1edbi v\u00e0 sau \u0111\u00f3 ph\u1ea3n \u1ee9ng v\u1edbi ch\u1ea5t \u0111i\u1ec7n ph\u00e2n \u0111\u1ec3 t\u1ea1o th\u00e0nh m\u00e0ng SEI m\u1edbi, \u0111i\u1ec1u n\u00e0y s\u1ebd ti\u1ebfp t\u1ee5c g\u00e2y ra s\u1ef1 m\u1ea5t m\u00e1t li\u00ean t\u1ee5c c\u1ee7a c\u00e1c ion lithium v\u00e0 ch\u1ea5t \u0111i\u1ec7n ph\u00e2n, d\u1eabn \u0111\u1ebfn s\u1ef1 suy gi\u1ea3m dung l\u01b0\u1ee3ng pin. M\u00e0ng SEI c\u00f3 \u0111\u1ed9 d\u00e0y nh\u1ea5t \u0111\u1ecbnh. M\u1eb7c d\u00f9 c\u00e1c ion lithium c\u00f3 th\u1ec3 x\u00e2m nh\u1eadp, nh\u01b0ng m\u00e0ng SEI s\u1ebd ch\u1eb7n m\u1ed9t s\u1ed1 k\u00eanh khu\u1ebfch t\u00e1n tr\u00ean b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c \u00e2m, \u0111i\u1ec1u n\u00e0y kh\u00f4ng c\u00f3 l\u1ee3i cho s\u1ef1 khu\u1ebfch t\u00e1n c\u1ee7a c\u00e1c ion lithium trong v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c \u00e2m, \u0111i\u1ec1u n\u00e0y c\u0169ng s\u1ebd l\u00e0m gi\u1ea3m dung l\u01b0\u1ee3ng pin.<\/span><\/span><\/p>\n

4. \u1ea2nh h\u01b0\u1edfng c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n<\/span><\/span><\/span><\/h3>\n

Trong qu\u00e1 tr\u00ecnh tu\u1ea7n ho\u00e0n li\u00ean t\u1ee5c, ch\u1ea5t \u0111i\u1ec7n ph\u00e2n s\u1ebd li\u00ean t\u1ee5c b\u1ecb ph\u00e2n t\u00edch v\u00e0 bay h\u01a1i do h\u1ea1n ch\u1ebf v\u1ec1 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t, t\u00edch t\u1ee5 trong th\u1eddi gian d\u00e0i, d\u1eabn \u0111\u1ebfn l\u01b0\u1ee3ng ch\u1ea5t \u0111i\u1ec7n ph\u00e2n t\u1ed5ng th\u1ec3 gi\u1ea3m, v\u1eadt li\u1ec7u d\u01b0\u01a1ng v\u00e0 \u00e2m th\u1ea9m th\u1ea5u kh\u00f4ng \u0111\u1ee7, ph\u1ea3n \u1ee9ng s\u1ea1c v\u00e0 x\u1ea3 kh\u00f4ng ho\u00e0n to\u00e0n, d\u1eabn \u0111\u1ebfn kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf gi\u1ea3m.<\/span><\/span><\/p>\n

Do \u0111i\u1ec7n th\u1ebf oxy h\u00f3a c\u1ee7a t\u1ea1p ch\u1ea5t th\u01b0\u1eddng th\u1ea5p h\u01a1n \u0111i\u1ec7n th\u1ebf d\u01b0\u01a1ng c\u1ee7a pin lithium-ion n\u00ean d\u1ec5 b\u1ecb oxy h\u00f3a tr\u00ean b\u1ec1 m\u1eb7t d\u01b0\u01a1ng v\u00e0 oxit b\u1ecb kh\u1eed tr\u00ean \u0111i\u1ec7n c\u1ef1c \u00e2m, li\u00ean t\u1ee5c ti\u00eau th\u1ee5 c\u00e1c ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng d\u01b0\u01a1ng v\u00e0 \u00e2m, g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng t\u1ef1 ph\u00f3ng \u0111i\u1ec7n, t\u1ee9c l\u00e0 l\u00e0m thay \u0111\u1ed5i m\u1ee9c x\u1ea3 c\u1ee7a pin khi s\u1eed d\u1ee5ng b\u1ea5t th\u01b0\u1eddng.<\/span><\/span><\/p>\n

Ch\u1ea5t \u0111i\u1ec7n ph\u00e2n c\u0169ng ch\u1ee9a m\u1ed9t l\u01b0\u1ee3ng n\u01b0\u1edbc nh\u1ea5t \u0111\u1ecbnh, s\u1ebd ph\u1ea3n \u1ee9ng v\u1edbi lifp6 trong ch\u1ea5t \u0111i\u1ec7n ph\u00e2n \u0111\u1ec3 x\u1eed l\u00fd LIF v\u00e0 HF. Sau \u0111\u00f3, HF s\u1ebd ph\u00e1 h\u1ee7y m\u00e0ng SEI v\u00e0 t\u1ea1o ra nhi\u1ec1u LIF h\u01a1n, d\u1eabn \u0111\u1ebfn l\u1eafng \u0111\u1ecdng LiF, ti\u00eau th\u1ee5 li\u00ean t\u1ee5c c\u00e1c ion lithium ho\u1ea1t \u0111\u1ed9ng v\u00e0 l\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd chu k\u1ef3 pin.<\/span><\/span><\/p>\n

T\u1eeb ph\u00e2n t\u00edch tr\u00ean, c\u00f3 th\u1ec3 th\u1ea5y ch\u1ea5t \u0111i\u1ec7n ph\u00e2n c\u00f3 t\u00e1c \u0111\u1ed9ng r\u1ea5t quan tr\u1ecdng \u0111\u1ebfn tu\u1ed5i th\u1ecd chu k\u1ef3 c\u1ee7a pin lithium-ion. L\u1ef1a ch\u1ecdn ch\u1ea5t \u0111i\u1ec7n ph\u00e2n ph\u00f9 h\u1ee3p s\u1ebd c\u1ea3i thi\u1ec7n r\u00f5 r\u1ec7t tu\u1ed5i th\u1ecd chu k\u1ef3 c\u1ee7a pin.<\/span><\/span><\/p>\n

5. R\u01a1i kh\u1ecfi v\u1eadt li\u1ec7u t\u00edch c\u1ef1c v\u00e0 ti\u00eau c\u1ef1c<\/span><\/span><\/span><\/h3>\n

C\u00e1c ho\u1ea1t ch\u1ea5t c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u0111i\u1ec7n c\u1ef1c \u00e2m \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh tr\u00ean ch\u1ea5t n\u1ec1n th\u00f4ng qua ch\u1ea5t k\u1ebft d\u00ednh. Trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng l\u00e2u d\u00e0i, do ch\u1ea5t k\u1ebft d\u00ednh b\u1ecb h\u1ecfng v\u00e0 rung \u0111\u1ed9ng c\u01a1 h\u1ecdc c\u1ee7a pin, c\u00e1c ho\u1ea1t ch\u1ea5t c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u0111i\u1ec7n c\u1ef1c \u00e2m ti\u1ebfp t\u1ee5c r\u01a1i ra v\u00e0 \u0111i v\u00e0o dung d\u1ecbch \u0111i\u1ec7n ph\u00e2n, d\u1eabn \u0111\u1ebfn vi\u1ec7c gi\u1ea3m li\u00ean t\u1ee5c c\u00e1c ho\u1ea1t ch\u1ea5t c\u00f3 th\u1ec3 tham gia v\u00e0o ph\u1ea3n \u1ee9ng \u0111i\u1ec7n h\u00f3a v\u00e0 tu\u1ed5i th\u1ecd chu k\u1ef3 c\u1ee7a pin li\u00ean t\u1ee5c gi\u1ea3m.<\/span><\/span><\/p>\n

6. C\u00e1c y\u1ebfu t\u1ed1 s\u1eed d\u1ee5ng b\u00ean ngo\u00e0i<\/span><\/span><\/span><\/h3>\n

Pin lithium ion c\u00f3 c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u00e0 ph\u1ea1m vi s\u1eed d\u1ee5ng h\u1ee3p l\u00fd, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111i\u1ec7n \u00e1p c\u1eaft x\u1ea3 s\u1ea1c, t\u1ef7 l\u1ec7 x\u1ea3 s\u1ea1c, ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 l\u00e0m vi\u1ec7c, ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 l\u01b0u tr\u1eef, v.v. Tuy nhi\u00ean, trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf, vi\u1ec7c l\u1ea1m d\u1ee5ng v\u01b0\u1ee3t qu\u00e1 ph\u1ea1m vi cho ph\u00e9p l\u00e0 r\u1ea5t ph\u1ed5 bi\u1ebfn. S\u1eed d\u1ee5ng kh\u00f4ng h\u1ee3p l\u00fd trong th\u1eddi gian d\u00e0i s\u1ebd d\u1eabn \u0111\u1ebfn ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc kh\u00f4ng th\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c b\u00ean trong pin, l\u00e0m h\u1ecfng c\u01a1 ch\u1ebf pin, \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a c\u1ee7a pin v\u00e0 khi\u1ebfn tu\u1ed5i th\u1ecd chu k\u1ef3 gi\u1ea3m nhanh. Trong t\u00ecnh tr\u1ea1ng nghi\u00eam tr\u1ecdng, n\u00f3 c\u0169ng s\u1ebd g\u00e2y ra tai n\u1ea1n an to\u00e0n.<\/span><\/span><\/p>\n

7. T\u00ednh an to\u00e0n c\u1ee7a pin lithium ion<\/span><\/span><\/span><\/h3>\n

Nguy\u00ean nh\u00e2n b\u00ean trong g\u00e2y ra v\u1ea5n \u0111\u1ec1 an to\u00e0n c\u1ee7a pin lithium-ion l\u00e0 do nhi\u1ec7t \u0111\u1ed9 b\u00ean trong pin kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t v\u00e0 nhi\u1ec7t \u0111\u1ed9 li\u00ean t\u1ee5c t\u00edch t\u1ee5, d\u1eabn \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 b\u00ean trong pin li\u00ean t\u1ee5c t\u0103ng cao v\u00e0 hi\u1ec7u su\u1ea5t b\u00ean ngo\u00e0i c\u1ee7a n\u00f3 l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng d\u1eef d\u1ed9i nh\u01b0 ch\u00e1y n\u1ed5.<\/span><\/span><\/p>\n

Pin l\u00e0 v\u1eadt mang n\u0103ng l\u01b0\u1ee3ng m\u1eadt \u0111\u1ed9 cao. V\u1ec1 b\u1ea3n ch\u1ea5t, c\u00f3 nh\u1eefng y\u1ebfu t\u1ed1 kh\u00f4ng an to\u00e0n. M\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng c\u00e0ng cao, t\u00e1c \u0111\u1ed9ng gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng d\u1eef d\u1ed9i c\u00e0ng l\u1edbn v\u00e0 v\u1ea5n \u0111\u1ec1 an to\u00e0n c\u00e0ng n\u1ed5i b\u1eadt. X\u0103ng, kh\u00ed thi\u00ean nhi\u00ean, axetilen v\u00e0 c\u00e1c v\u1eadt mang n\u0103ng l\u01b0\u1ee3ng cao kh\u00e1c c\u0169ng c\u00f3 nh\u1eefng v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng t\u1ef1. C\u00f3 v\u00f4 s\u1ed1 tai n\u1ea1n an to\u00e0n h\u00e0ng n\u0103m.<\/span><\/span><\/p>\n

C\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n h\u00f3a kh\u00e1c nhau, c\u00f4ng su\u1ea5t, th\u00f4ng s\u1ed1 quy tr\u00ecnh, m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng v\u00e0 m\u1ee9c \u0111\u1ed9 s\u1eed d\u1ee5ng kh\u00e1c nhau c\u00f3 t\u00e1c \u0111\u1ed9ng l\u1edbn \u0111\u1ebfn t\u00ednh an to\u00e0n c\u1ee7a pin lithium-ion.<\/span><\/span><\/p>\n

B\u1edfi v\u00ec pin l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng, trong qu\u00e1 tr\u00ecnh gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng, khi t\u1ed1c \u0111\u1ed9 b\u1eaft \u0111\u1ea7u v\u00e0 t\u00edch t\u1ee5 nhi\u1ec7t c\u1ee7a pin l\u1edbn h\u01a1n t\u1ed1c \u0111\u1ed9 t\u1ea3n nhi\u1ec7t, nhi\u1ec7t \u0111\u1ed9 b\u00ean trong pin s\u1ebd ti\u1ebfp t\u1ee5c t\u0103ng. Pin lithium ion \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o t\u1eeb v\u1eadt li\u1ec7u cat\u1ed1t c\u00f3 ho\u1ea1t t\u00ednh cao v\u00e0 ch\u1ea5t \u0111i\u1ec7n ph\u00e2n h\u1eefu c\u01a1. Trong \u0111i\u1ec1u ki\u1ec7n gia nhi\u1ec7t, ch\u00fang r\u1ea5t d\u1ec5 x\u1ea3y ra ph\u1ea3n \u1ee9ng ph\u1ee5 h\u00f3a h\u1ecdc d\u1eef d\u1ed9i. Ph\u1ea3n \u1ee9ng n\u00e0y s\u1ebd t\u1ea1o ra r\u1ea5t nhi\u1ec1u nhi\u1ec7t v\u00e0 th\u1eadm ch\u00ed d\u1eabn \u0111\u1ebfn \u201c <\/span><\/span>nhi\u1ec7t kh\u00f4ng ki\u1ec3m so\u00e1t<\/span><\/span><\/a> \u201d, \u0111\u00e2y l\u00e0 l\u00fd do quan tr\u1ecdng g\u00e2y ra tai n\u1ea1n nguy hi\u1ec3m cho pin.<\/span><\/span><\/p>\n

\n
<\/div>\n
<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

\u0110\u1ed1i v\u1edbi pin lithium-ion l\u00fd t\u01b0\u1edfng, s\u1ef1 c\u00e2n b\u1eb1ng dung l\u01b0\u1ee3ng s\u1ebd kh\u00f4ng thay \u0111\u1ed5i trong chu k\u1ef3 c\u1ee7a n\u00f3 v\u00e0 dung l\u01b0\u1ee3ng ban \u0111\u1ea7u trong m\u1ed7i chu k\u1ef3 ph\u1ea3i l\u00e0 m\u1ed9t gi\u00e1 tr\u1ecb nh\u1ea5t \u0111\u1ecbnh. Tr\u00ean th\u1ef1c t\u1ebf, t\u00ecnh h\u00ecnh ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u. B\u1ea5t k\u1ef3 ph\u1ea3n \u1ee9ng ph\u1ee5 n\u00e0o c\u00f3 th\u1ec3 kh\u1edfi t\u1ea1o<\/p>\n","protected":false},"author":1,"featured_media":19949,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19948","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc-cong-nghe"],"acf":[],"_links":{"self":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19948","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/comments?post=19948"}],"version-history":[{"count":1,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19948\/revisions"}],"predecessor-version":[{"id":22413,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19948\/revisions\/22413"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19949"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19948"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19948"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}