Sesosa sa matla a betri ea lithium ke eng?

著者：Iflowpower – Dodávateľ prenosných elektrární

Ho ea ka litlaleho, matla a ho ntša betri ea lithium-ion ke hoo e ka bang 31.5% feela mocheso oa kamore ho -20 ¡ã C. Mocheso oa khale oa betri ea lithium-ion o pakeng tsa -20 ~ + 55 ¡ã C.

Empa karolong ea sebaka sa sefofane, likoloi tsa motlakase, li hloka hore betri e sebetse hantle ho -40 ¡ã C. Ka hona, ho bohlokoa haholo ho ntlafatsa thepa ea mocheso o tlase oa libeteri tsa lithium ion. Libakeng tse tlase tsa mocheso, viscosity ea electrolyte ea eketseha, esita le ho tiea ka mokhoa o itseng, e leng se etsang hore ho be le conductivity e tlaase ea betri ea lithium ion.

Tšebelisano pakeng tsa electrolyte le electrode e fosahetseng le diaphragm e senyeha tikolohong ea mocheso o tlase. Electrode e mpe ea betri ea lithium ion tlas&39;a maemo a mocheso o tlase o ile oa putlama haholo, &39;me lithium ea tšepe e neng e tsitsitse e ile ea arajoa ka electrolyte, mme tlhahiso ea sehlahisoa e bakile ho botenya bo tiileng ba electrolyte (SEI). Libetri tsa lithium-ion tlas&39;a tikoloho ea mocheso o tlase li fokotsa tsamaiso ea ka hare ea phepelo ea ntho e sebetsang, phetiso ea phetisetso ea tefiso (RCT) e eketseha haholo.

Pono ea setsebi 1: Tharollo ea Electrolyne e ama ts&39;ebetso ea mocheso o tlase oa libeteri tsa lithium ion, sebopeho le thepa ea thepa ea electrolyte e na le phello e mpe ho ts&39;ebetso ea mocheso o tlase oa betri. Bothata bo ka holim&39;a betri ke: viscosity ea electrolyte e tla ba e kholo, conductivity ea ion e lieha, e fella ka lebelo la ho falla ha elektronike ea potoloho ea ka ntle, kahoo betri e na le polarized haholo, &39;me tefiso le matla a ho lahla a na le ho fokotseha ho hoholo. Haholo-holo ha ho tjhaja mocheso o tlase, li-ion tsa lithium li ka etsa habonolo lithium delegranes holim&39;a eleketrode e mpe, e bakang ho hloleha ha betri.

Ts&39;ebetso ea mocheso o tlase oa electrolyte e amana haufi-ufi le boholo ba conductivity ea electrolyte ka boeona, ion ea phetisetso ea motlakase oa motlakase e potlakile, &39;me matla a mangata a ka hlahisoa ka mocheso o tlaase. Ha letsoai la lithium le ntse le eketseha ka electrolyte, palo ea ho falla e ntse e eketseha, e phahamisa conductivity. Motlakase o phahameng, ho potlakisa ha ion, ho fokotseha ha polarization, ho ntlafatsa ts&39;ebetso ea betri ka mocheso o tlase.

Ka hona, conductivity e phahameng ke boemo bo hlokahalang bakeng sa ho finyella tshebetso e ntle ea mocheso o tlase oa libeteri tsa lithium ion. Motlakase oa motlakase oa electrolyte o amana le sebopeho sa electrolyte, &39;me viscosity ea solvent ke ho ntlafatsa tsela ea motlakase oa motlakase oa electrolyte. The fluidity ea solvent e ntle ka mocheso o tlase oa solvent ke tiiso ea lipalangoang tsa ion, &39;me lesela le tiileng la electrolyte le entsoeng ke electrolyte ka mocheso o tlaase le eona ke senotlolo sa ho ama lithium ion conductance,&39; me RSEI ke ho thibela ho thata ha betri ea lithium ion sebakeng se tlaase sa mocheso.

Setsebi sa 2: Lintlha tse latsoang ho fokotsa ts&39;ebetso ea mocheso o tlase oa libeteri tsa lithium ion ke mocheso o tlase, impedance e ncha ea Li +, empa eseng filimi ea SEI. Mohaho o nang le lera o na le mocha o le mong oa lithium-ion diffusion channel, o nang le botsitso ba sebopeho sa mocha o nang le mahlakore a mararo, &39;me ke thepa ea pele ea khoebo ea lithium ion battery positive. Lintho tsa eona tse emetseng li kenyelletsa LiCoO2, Li (CO1-XNIX) O2 le Li (Ni, Co, Mn) O2, e.