Ka Ike ana o na kumu o ka nalo ana o ka wela o na mea kupono i ka Bateri Lithium Ion

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Pembekal Stesen Janakuasa Mudah Alih

Hoʻohana ʻia ka kaʻa uila i hōʻike ʻia e Tesla e hoʻohana i ka NCA, NCM811 a i ʻole NCM622 kiʻekiʻe nickel-based material e like me ka lithium ion battery positive material. Eia naʻe, loaʻa nā pilikia palekana o kēia mea kiʻekiʻe-nickel layer-shaped electrode material, Canadian light source energy storage group Dr. ʻO Zhou Wei, Dr.

Wang Jian, Wang Jian, he Chemical Imaging Line Station a me ka hope polopeka o Xiamen University of Science a me Technology, no ka manawa mua, ka mahele mahele o ka paʻakikī electrode wela a hiki i ka paʻakikī composite electrode wela mai o ka mana, a me ka multi-phase kaʻawale hanana ma mua a ma hope o ka wela lilo. ʻIke ʻia ka pili e ka nano-level, a ʻike ʻia e pili pono ana ka thermal out of control me ka puʻunaue o nā conductors a me nā binders. ʻO ka pākaukau lithium ion i hōʻike ʻia e NCA, NCM811 a i ʻole NCM622 nā mea maikaʻi o ka hiki ke kiʻekiʻe, ke kumu kūʻai haʻahaʻa, a me nā pōʻino kaiapuni.

I kēia manawa, hoʻohana ʻia ka kaʻa uila i hōʻike ʻia e Tesla. Eia nō naʻe, aia kahi pilikia ma ke alo o ka palekana o nā electrodes maikaʻi nickel layered, ʻoi aku ka nui o ka hoʻohaʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa, hoʻokuʻu i ka oxygen, ke kumu o ka thermal out of control, ka hopena i ka pahū ʻana o ka pā. Mai ka hiʻohiʻona o ke kumumanaʻo kumu, ʻo ka hoʻomaopopo hohonu ʻana i ka hoʻokaʻawale ʻana o nā electrodes mokuʻāina paʻa ma lalo o ka thermal out-of control he mea nui ia e hoʻoponopono i nā hemahema paʻa o kēia mea intrinsic.

Mai ka hiʻohiʻona o ka loiloi hana, ua hoʻokaʻawale ʻia ke ʻano o ka pae haʻawina i ka electrode composite porous maoli, a pili i ka hopena nui o ka mea electrode maikaʻi, ka pilina ma waena o ka hoʻoponopono ʻili aniani, a me ke kiʻiʻoniʻoni passivation, ʻo ia ke kumu noiʻi a me ka pae noi maoli. ʻO ke ala kūpono i hui ʻia. Eia nō naʻe, pono e loaʻa i kēia manaʻo ke ʻano kiʻekiʻe e hoʻokō ʻia.

Ua ʻōlelo ʻo Dr. ʻO Zhou Wei, ka Canadian Light Source Storage Group, a me Dr. Hana pū ʻo Wang Jian ma ke kahua ʻo Chemical Imaging Line me ka hope polopeka o ke kākau ʻōlelo alanui o Xiamen University of Technology e hana hou i ka hoʻoili ʻana o ka X-ray scanning o nā mea a me ka koho orbit, kemika a me nā hale uila.

Hoʻohana ʻia ʻo MicroT (PEEM) e aʻo i ke ʻano o ka hoʻokaʻawale ʻana o ka thermostatic acid lithium lithium laminate particles i ka electrode porous. Hōʻike ʻia kēia hana ma ke ʻano he noiʻi koʻikoʻi ma ke ʻano o ka ChemicalCommunications. Ma o ka haumāna in situ, ua hoʻohana nā mea kākau i ka māhele māhele o ka wela electrode composite paʻakikī a hiki i ka ʻike ʻole ʻia ʻana o ka thermal composite electrode thermal, a ʻike ʻia ka pilina o nā hanana hoʻokaʻawale ʻano like ʻole i ka correlation ma mua a ma hope o ka thermal out-of-control.

ʻIkeʻike. ʻO ka lilo ʻana o ka wela ma mua a ma hope o ka hoʻokaʻawale ʻana i ka pae i loko o kahi pae ʻāpana electrode hoʻokahi e hōʻike ana i ka like ʻole. ʻAʻole ʻike ʻia kēia non-uniformization a me ka nui o ka ʻāpana, ke ʻano o ka ʻili aniani, akā pili pili loa ka māhele ʻana o nā mea hana conductive a me nā mea hoʻopili.

ʻO kēia ka manawa mua e hoʻokō ai i ka nano visualization i hoʻokaʻawale ʻia e nā ʻāpana like ma mua a ma hope o ka lilo ʻana o ka wela, a hoʻopili iā ia me kona kaiapuni electrode. He mea nui kēia ʻano o ka hoʻoneʻe ʻana i ka wela o ka mea laminated, kūpono no ka hoʻolaha ʻana i ke ʻano reactive, attenuation mechanism o nā ʻōnaehana electrode ʻē aʻe e aʻo ai i ka wela i waho o ka mana. Hoʻohana mua ka ʻatikala i ka ʻike elemental o nā mea o PEEM e pili ana i ka ʻāpana electrode, me ka lithium cobaltate, PVDF, a me ka hāʻawi ʻana i nā kalapona kalapona uila.

Ma mua o ka nalo ʻana o ka wela, ua hui pū ʻia ka mea hoʻokele a me ka mea hoʻopaʻa paʻa, akā ʻaʻole kūlike kēia agglomeration ma ka ʻili o nā ʻāpana lithium cobaltate a me nā ʻāpana. ʻIke ʻia ka nalowale ʻana o ka wela o ka PVDF, ʻoiai ʻo ka ʻeleʻele kalapona conductive e hoʻohele like ʻia i loko o ka lithium cobalt acid ma ke ʻano o ka agglomeration. Hiki i ka PEEM ke hōʻea i kahi hoʻonā spatial o 100 nm, a hiki ke kiʻi ʻia ma ka 50 um electrode surface.

Loaʻa ka hoʻonā kiʻekiʻe kiʻekiʻe a me ka wā kiʻekiʻe kiʻi kiʻi kiʻi kiʻi o nā ʻāpana he nui. Hiki ke ho&39;ohana &39;ia ka morphology o ka lithium cobaltate particles no ke a&39;o &39;ana i ka hana ho&39;one&39;e wela o nā mea electrode like ma mua a ma hope o ka thermostat. ʻO ka loaʻa hou ʻana o nā mea hana conductive, ʻo ka hāʻawi ʻana i ka mea hoʻopaʻa hiki ke hopena i kahi pākaukau lithium-ion maikaʻi i ka thermal out-of-control diagram 1.

Hoʻokaʻawale ʻia ka māhele elemental a me ka correlation a me ke kiʻi hoʻoponopono o ma hope o ka thermostat (A, B) (C, D) i kēlā me kēia. Hōʻike maikaʻi ʻia ka maikaʻi ʻole o ka hoʻokaʻawale ʻana i nā kiʻi C a me D.

Inā loaʻa ka palapala ʻāina hoʻokaʻawale me ka ʻaoʻao o ka mea i loaʻa, ua pili nui kēia kaʻawale ʻana me ka hāʻawi ʻana i ke kalapona ʻeleʻele conductive ma mua a ma hope o ka nalowale wela. Ua hoʻemi nui ka thermostat i ka nui o ka māhele māhele. He ʻokoʻa ia mai nā hopena i loaʻa ma ka hoʻopaʻa ʻana kemika ma hope o ka hoʻopaʻa ʻana kemika e ka hoʻouka ʻana i nā kemika i ka wā i hala.

ʻOi aku ka liʻiliʻi o nā hopena o nā ʻāpana electrode, ka nui, a me ke ʻano o ka ʻili aniani ma mua o ke kaiapuni particulate, ʻoi aku ka hopena o ka conductive agent.