{"id":684605,"date":"2024-09-09T09:35:36","date_gmt":"2024-09-09T08:35:36","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=684605"},"modified":"2024-09-09T09:35:36","modified_gmt":"2024-09-09T08:35:36","slug":"phan-tich-nhiet-cua-pin-lithium-luu-huynh","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/phan-tich-nhiet-cua-pin-lithium-luu-huynh\/","title":{"rendered":"Ph\u00e2n t\u00edch nhi\u1ec7t c\u1ee7a pin lithium-l\u01b0u hu\u1ef3nh"},"content":{"rendered":"

Ph\u00e2n t\u00edch nhi\u1ec7t c\u1ee7a pin lithium-l\u01b0u hu\u1ef3nh: Kh\u00e1m ph\u00e1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng, hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a pin th\u00f4ng qua ph\u00e2n t\u00edch nhi\u1ec7t h\u1ecdc chi ti\u1ebft v\u00e0 khoa h\u1ecdc.<\/p>\n

\"Ph\u00e2n<\/p>\n

Ph\u00e2n t\u00edch nhi\u1ec7t c\u1ee7a pin lithium-l\u01b0u hu\u1ef3nh<\/h2>\n

Pin lithium-l\u01b0u hu\u1ef3nh (Li-S) l\u00e0 m\u1ed9t trong nh\u1eefng lo\u1ea1i pin h\u1ee9a h\u1eb9n nh\u1ea5t cho c\u00e1c \u1ee9ng d\u1ee5ng l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng ti\u00ean ti\u1ebfn nh\u1edd m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng cao v\u00e0 chi ph\u00ed th\u1ea5p. Tuy nhi\u00ean, m\u1ed9t trong nh\u1eefng th\u00e1ch th\u1ee9c l\u1edbn c\u1ee7a pin Li-S ch\u00ednh l\u00e0 ki\u1ec3m so\u00e1t v\u00e0 ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9 trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 ph\u00e2n t\u00edch nhi\u1ec7t c\u1ee7a pin lithium-l\u01b0u hu\u1ef3nh.<\/p>\n

C\u00e1c ph\u1ea3n \u1ee9ng \u0111i\u1ec7n h\u00f3a trong pin Li-S<\/h2>\n

Qu\u00e1 tr\u00ecnh ph\u00f3ng \u0111i\u1ec7n trong pin Li-S bao g\u1ed3m c\u00e1c ph\u1ea3n \u1ee9ng \u0111i\u1ec7n h\u00f3a ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh sau:<\/p>\n

<\/p>\n

  • Trong giai \u0111o\u1ea1n \u0111\u1ea7u:<\/li>\n

    <\/u1><\/p>\n

    S8<\/sub> + 16Li+<\/sup> + 16e–<\/sup> \u2192 8Li2<\/sub>S<\/p>\n

    <\/p>\n

  • Trong giai \u0111o\u1ea1n cu\u1ed1i:<\/li>\n

    <\/u1><\/p>\n

    Li2<\/sub>Sn<\/sub> + 2Li+<\/sup> + 2e–<\/sup> \u2192 2Li2<\/sub>S(n-1)<\/sub> (n = 4, 6, 8)<\/p>\n

    Nh\u1eefng qu\u00e1 tr\u00ecnh n\u00e0y gi\u1ea3i ph\u00f3ng m\u1ed9t l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u00e1ng k\u1ec3, ph\u1ee5 thu\u1ed9c v\u00e0o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

    Ph\u00e1t nhi\u1ec7t v\u00e0 qu\u1ea3n l\u00fd nhi\u1ec7t<\/h2>\n

    Trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng, pin Li-S s\u1ebd sinh nhi\u1ec7t do c\u00e1c y\u1ebfu t\u1ed1 sau:<\/p>\n

    <\/p>\n

  • Ph\u1ea3n \u1ee9ng \u0111i\u1ec7n h\u00f3a h\u1ecdc x\u1ea3y ra trong qu\u00e1 tr\u00ecnh ph\u00f3ng \u0111i\u1ec7n v\u00e0 s\u1ea1c.<\/li>\n
  • Ph\u1ea3n \u1ee9ng ph\u1ee5 li\u00ean quan \u0111\u1ebfn t\u1ea1o th\u00e0nh polysulfit.<\/li>\n
  • Kh\u00e1ng nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u trong pin, bao g\u1ed3m c\u1ea3 ch\u1ea5t \u0111i\u1ec7n ph\u00e2n v\u00e0 v\u1eadt li\u1ec7u l\u01b0u hu\u1ef3nh.<\/li>\n

    <\/o1><\/p>\n

    \u0110\u1ec3 b\u1ea3o \u0111\u1ea3m hi\u1ec7u su\u1ea5t v\u00e0 an to\u00e0n c\u1ee7a pin Li-S, vi\u1ec7c qu\u1ea3n l\u00fd nhi\u1ec7t l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. C\u00e1c k\u1ef9 thu\u1eadt qu\u1ea3n l\u00fd nhi\u1ec7t ph\u1ed5 bi\u1ebfn bao g\u1ed3m thi\u1ebft k\u1ebf t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3, s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u c\u00f3 h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t cao v\u00e0 h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t ch\u1ee7 \u0111\u1ed9ng.<\/p>\n

    Ph\u00e2n t\u00edch m\u00f4 ph\u1ecfng nhi\u1ec7t<\/h2>\n

    M\u00f4 ph\u1ecfng nhi\u1ec7t l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1eefu \u00edch \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n v\u00e0 ph\u00e2n t\u00edch s\u1ef1 ph\u00e2n b\u1ed1 nhi\u1ec7t \u0111\u1ed9 trong pin trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng. C\u00e1c m\u00f4 h\u00ecnh m\u00f4 ph\u1ecfng th\u01b0\u1eddng s\u1eed d\u1ee5ng ph\u01b0\u01a1ng tr\u00ecnh nhi\u1ec7t g\u00e2y:<\/p>\n

    \\(\\frac{\\partial T}{\\partial t} = \\alpha \\nabla^2 T + \\frac{1}{\\rho C_p} Q \\)<\/p>\n

    <\/p>\n

  • \u1ede \u0111\u00e2y:<\/li>\n

    <\/u1><\/p>\n

    <\/p>\n

  • \\( T \\) l\u00e0 nhi\u1ec7t \u0111\u1ed9<\/li>\n
  • \\( t \\) l\u00e0 th\u1eddi gian<\/li>\n
  • \\( \\alpha \\) l\u00e0 h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t<\/li>\n
  • \\( \\rho \\) l\u00e0 m\u1eadt \u0111\u1ed9 kh\u1ed1i l\u01b0\u1ee3ng<\/li>\n
  • \\( C_p \\) l\u00e0 nhi\u1ec7t dung ri\u00eang<\/li>\n
  • \\( Q \\) l\u00e0 ph\u00e1t nhi\u1ec7t<\/li>\n

    <\/o1><\/p>\n

    Th\u00f4ng qua m\u00f4 ph\u1ecfng, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c v\u00f9ng n\u00f3ng v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a pin.<\/p>\n

    K\u1ebft lu\u1eadn<\/h2>\n

    Ph\u00e2n t\u00edch nhi\u1ec7t c\u1ee7a pin lithium-l\u01b0u hu\u1ef3nh \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ph\u00e1t tri\u1ec3n v\u00e0 ho\u00e0n thi\u1ec7n lo\u1ea1i pin n\u00e0y. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 c\u00e1c ph\u1ea3n \u1ee9ng ph\u00e1t nhi\u1ec7t v\u00e0 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 m\u00f4 ph\u1ecfng nhi\u1ec7t, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho vi\u1ec7c s\u1eed d\u1ee5ng pin Li-S.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Ph\u00e2n t\u00edch nhi\u1ec7t c\u1ee7a pin lithium-l\u01b0u hu\u1ef3nh: Kh\u00e1m ph\u00e1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng, hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a pin th\u00f4ng qua ph\u00e2n t\u00edch nhi\u1ec7t h\u1ecdc chi ti\u1ebft v\u00e0 khoa h\u1ecdc.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"\nPh\u00e2n t\u00edch nhi\u1ec7t c\u1ee7a pin lithium-l\u01b0u hu\u1ef3nh<\/title>\n<meta name=\"description\" content=\"Ph\u00e2n t\u00edch nhi\u1ec7t c\u1ee7a pin lithium-l\u01b0u hu\u1ef3nh: Kh\u00e1m ph\u00e1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng, hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a pin th\u00f4ng qua ph\u00e2n t\u00edch nhi\u1ec7t h\u1ecdc chi ti\u1ebft v\u00e0 khoa h\u1ecdc.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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