Pehea e hoʻomaikaʻi ai i ka palekana o nā pākahi lithium

ʻO ka maikaʻi o nā kaʻa ikehu hou, ʻoi aku ka haʻahaʻa o ke kalapona a me ke kaiapuni ma mua o nā kaʻa ʻaila. Hoʻohana ia i nā wahie kaʻa unconventional e like me ke kumu mana, e like me nā pā lithium, hydrogen wahie, a me nā mea ʻē aʻe. , mea uila, etc.

Eia naʻe, ʻaʻole pono e hoʻohaʻahaʻa ʻia ka palekana o nā pā lithium-ion. Kekahi helu o nā ulia hōʻike i ka wā o kanaka improperly uku, a me ka ambient wela kiʻekiʻe loa, he mea maʻalahi loa e hoʻonāuki i ka lithium-ion pākaukau spontaneous combustion, explosion, i lilo i ka nui loa eha wahi i ka ulu ana o ka lithium-ion pahū.

ʻOiai ʻo nā waiwai o ka pā lithium ponoʻī e hoʻoholo i kona hopena "flammable and explosive", akā ʻaʻole hiki ʻole ke hōʻemi i ka pilikia a me ka palekana. Me ka holomua mau o ka ʻenehana ʻenehana, ʻo nā hui kelepona ʻelua a me nā hui kaʻa ikehu hou, ma o kahi ʻōnaehana hoʻokele pākaukau kūpono a me ka ʻōnaehana hoʻokele wela, e hiki ai i ka pākaukau ke hōʻoia i ka palekana, ʻaʻole e pahū a i ʻole nā ​​​​mea hoʻopau ʻole.

1.E hoʻomaikaʻi i ka palekana o ka electrolyte

Loaʻa ka reactivity kiʻekiʻe ma waena o nā electrolyte a me nā electrodes maikaʻi a maikaʻi ʻole, ʻoi aku hoʻi i nā wela kiʻekiʻe. No ka hoʻomaikaʻi ʻana i ka palekana o nā pila, hoʻomaikaʻi i ka palekana o ka electrolyte kekahi o nā ala ʻoi aku ka maikaʻi. Ma ka hoʻohui ʻana i nā mea hoʻohui hana, me ka hoʻohana ʻana i nā paʻakai lithium hou a me ka hoʻohana ʻana i nā solvents hou, hiki ke hoʻoponopono maikaʻi ʻia nā pōʻino palekana o ka electrolyte.

E like me nā hana like ʻole o nā mea hoʻohui, hiki ke hoʻokaʻawale ʻia i loko o kēia mau ʻāpana: nā mea hoʻohui palekana palekana, nā mea hoʻohui kiʻiʻoniʻoni, nā mea hoʻohui pale cathode, nā mea hoʻohui paʻakai lithium, nā mea hoʻohui hoʻonui lithium precipitation, nā mea hōʻiliʻili wai anti-corrosion additives, hoʻonui i ka wettability additives , etc.

2. Hoʻonui i ka palekana o nā mea electrode

Lithium iron phosphate a me ternary composites ua manaʻo ʻia he haʻahaʻa haʻahaʻa, "palekana maikaʻi" nā mea cathode i hiki ke hoʻohana nui ʻia i ka ʻoihana kaʻa uila. No ka mea cathode, ʻo ke ala maʻamau e hoʻomaikaʻi ai i kona palekana ʻo ia ka hoʻololi ʻana i ka uhi ʻana, e like me nā oxides metala ma ka ʻili o ka mea cathode, hiki ke pale i ka pilina pololei ma waena o ka mea cathode a me ka electrolyte, kaohi i ka hoʻololi ʻana o ka mea cathode, hoʻomaikaʻi i kona ʻano. paʻa, ho'ēmi i ka maʻi o nā cations i loko o ka lattice, i mea e ho'ēmi i kaʻaoʻao hopena wela hana.

ʻO ka mea electrode maikaʻi ʻole, ʻoiai ʻo kona ʻili he ʻāpana o ka pā lithium-ion i maʻalahi loa i ka thermochemical decomposition a me exotherm, ʻo ka hoʻomaikaʻi ʻana i ke kūpaʻa wela o ka kiʻi SEI he ala nui ia e hoʻomaikaʻi ai i ka palekana o ka mea electrode maikaʻi ʻole. Hiki ke hoʻomaikaʻi ʻia ke kūpaʻa wela o nā mea anode e ka hoʻonāwaliwali nāwaliwali, metala a me ka metala oxide deposition, polymer a i ʻole carbon cladding.

3. E hoʻomaikaʻi i ka hoʻolālā palekana palekana o ka pākaukau

Ma waho aʻe o ka hoʻomaikaʻi ʻana i ka palekana o nā mea pākaukau, nui nā ʻano palekana palekana i hoʻohana ʻia i nā pānaʻi lithium-ion pāʻoihana, e like me ka hoʻonohonoho ʻana i nā valve palekana pālolo, nā fuses thermally soluble, e hoʻopili ana i nā ʻāpana me nā coefficients wela maikaʻi i ka series, me ka hoʻohana ʻana i nā diaphragms thermally sealed, hoʻouka i ka pale kūikawā. nā kaapuni, a me nā ʻōnaehana hoʻokele pākaukau i hoʻolaʻa ʻia, he mea ia e hoʻonui ai i ka palekana.

Ka manawa hoʻouna: Feb-14-2023