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Kedu ihe kpatara ike batrị lithium?

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Soláthraí Stáisiún Cumhachta Inaistrithe

Dị ka akụkọ si kwuo, ikike mwepu nke batrị lithium-ion bụ naanị ihe dịka 31.5% na ụlọ okpomọkụ na -20 ¡ã C. Batrị lithium-ion ọdịnala na-arụ ọrụ okpomọkụ n&39;etiti -20 ~ + 55 ¡ã C.

Mana n&39;ụdị ikuku ikuku, ụgbọ ala eletrik, chọrọ ka batrị rụọ ọrụ nke ọma na -40 ¡ã C. Ya mere, ọ dị oke mkpa iji melite njirimara okpomọkụ dị ala nke batrị lithium ion. Na gburugburu ebe okpomọkụ dị ala, viscosity nke electrolyte na-abawanye, ọbụna n&39;akụkụ ụfọdụ siri ike, na-ebute obere arụmọrụ nke batrị lithium ion.

Nkwekọrịta n&39;etiti electrolyte na electrode na-adịghị mma na diaphragm na-akawanye njọ na ọnọdụ okpomọkụ dị ala. Eletrọd na-adịghị mma nke batrị lithium ion batrị dị n&39;okpuru ọnọdụ okpomọkụ dị ala na-agbapụta nke ukwuu, na lithium metal precipitated na-emeghachi omume na electrolyte, na ntinye ngwaahịa ahụ kpatara nhụsianya electrolyte siri ike (SEI). Batrị lithium-ion n&39;okpuru ọnọdụ okpomọkụ dị ala na-ebelata usoro mgbasa ozi dị n&39;ime nke ihe na-arụ ọrụ, ihe mgbochi nnyefe ụgwọ (RCT) na-abawanye nke ukwuu.

Ọkachamara 1: Ngwọta Electrolyne na-emetụta arụmọrụ dị ala nke batrị lithium ion, ihe mejupụtara na ihe eji eme ihe nke electrolyte nwere mmetụta na-adịghị mma na arụmọrụ batrị dị ala. Nsogbu dị n&39;elu batrị bụ: viscosity nke electrolyte ga-abụ nnukwu, ion conductivity na-adị ngwa ngwa, na-ebute ọsọ ọsọ nke eletrọn nke sekit dị n&39;èzí, ya mere batrị ahụ emebiwo nke ukwuu, na ikike ụgwọ na nkwụsị nwere mbelata dị nkọ. Karịsịa mgbe ịchaji obere okpomọkụ, ion lithium nwere ike ịmepụta lithium delegranes ngwa ngwa n&39;elu electrode na-adịghị mma, na-ebute ọdịda nke batrị.

Obere okpomọkụ nke electrolyte nwere njikọ chiri anya na nha nke electrolyte n&39;onwe ya, ion nnyefe nke eletriki eletrik na-adị ngwa ngwa, enwere ike itinyekwu ikike na obere okpomọkụ. Ka nnu lithium na-abawanye na electrolyte, ka ọnụ ọgụgụ ndị na-akwagharị, ka conductivity dị elu. Igwe ọkụ eletrik dị elu, ngwa ngwa ion conductivity, nke pere mpe, na-arụ ọrụ batrị ka mma na obere okpomọkụ.

Ya mere, elu conductivity bụ ọnọdụ dị mkpa maka imezu ezi ala okpomọkụ arụmọrụ nke lithium ion batrị. Igwe ọkụ eletrik nke electrolyte jikọtara ya na ngwakọta nke electrolyte, na viscosity nke ihe mgbaze bụ imeziwanye ụzọ nke eletriki eletrik. Mmiri mmiri nke ihe mgbaze dị mma na obere okpomọkụ nke ihe mgbaze bụ nkwa nke njem ion, na akpụkpọ anụ siri ike nke electrolyte mepụtara site na electrolyte na obere okpomọkụ bụkwa isi ihe na-emetụta omume ion lithium, na RSEI bụ ihe mgbochi siri ike nke batrị lithium ion na ọnọdụ okpomọkụ dị ala.

Ọkachamara 2: Ihe ndị na-atọ ụtọ na-amachi arụmọrụ dị ala nke batrị lithium ion bụ obere okpomọkụ, ihe mgbochi Li + ọhụrụ, mana ọ bụghị ihe nkiri SEI. Nhazi nke nwere akwa nwere ma ọwa mgbasa lithium-ion nwere otu akụkụ, nke nwere nkwụsi ike n&39;usoro ọwa akụkụ atọ, ma bụrụ ihe batrị lithium ion mbụ azụmahịa azụmahịa. Ihe nnọchi anya ya gụnyere LiCoO2, Li (CO1-XNIX) O2 na Li (Ni, Co, Mn) O2, e.

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