Yiziphi izindlela engingathuthukisa ngazo ukuphepha kwebhethri?

著者：Iflowpower – Fornitur Portable Power Station

1. Sebenzisa i-electrolyte yebhethri ye-lithium evikelekile okwamanje i-electrolyte yebhethri ye-lithium isebenzisa i-carbonate njengesixazululi, lapho i-carbonate eqondile ingathuthukisa ukushaja nokukhipha umthamo webhethri, kodwa iphoyinti layo le-flash liphansi, ngezinga lokushisa eliphansi Lizokhanya, futhi i-fluoro solvent ngokuvamile ine-flash point ephakeme noma akukho flash, ngakho-ke i-solvent ye-fluoro isetshenziselwa ukucindezela ukusha kwe-electrolyly. Izinyibilikisi ze-fluoride ezifundwayo njengamanje zifaka i-fluoroate ne-fluoroethyl ether.

I-electrolyte ye-flame retardant iyi-electrolyte esebenzayo ukuthi umsebenzi we-flame retardant wama-electrolyte anjalo ngokuvamile utholakala ngokungeza isithasiselo se-flame retardant ku-electrolyte evamile. I-electrolyte ye-flame-retardant okwamanje ixazulula izinyathelo zokonga kakhulu nezisebenzayo zokuphepha kwebhethri ye-lithium, ikakhulukazi ngaphansi kwemboni. Ukusebenzisa ama-electrolyte aqinile, esikhundleni se-organic fluid electrolyte, kuthuthukisa ngempumelelo ukuphepha kwamabhethri e-lithium.

Ama-electrolyte aqinile ahlanganisa ama-electrolyte aqinile e-polymer kanye nama-electrolyte aqinile angaphili. I-polymer electrolyte, ikakhulukazi i-gel-polymer electrolyte yohlobo lwe-gel, yenziwe kakhulu kubhethri ye-lithium yokuhweba, kodwa i-electrolyte ye-polymer yohlobo lwe-gel empeleni iyi-electrolyte ye-polymer eyomile kanye ne-electrolyte ewuketshezi compromise. Ngenxa yalokho, ilinganiselwe kakhulu ekuthuthukisweni kokuphepha kwebhethri.

Ngenxa ye-electrolyte ye-polymerization yesimo esomile, njengoba ingafani ne-electrolyte ye-polymer yohlobo lwe-gel, inokuphepha okungcono mayelana nokuvuza, ukucindezela komhwamuko nokuvutha. Njengamanje, i-electrolyte ehlanganisiwe yamanje ayihlangabezani nezidingo zokusetshenziswa kwebhethri ye-lithium ye-polymer, futhi ucwaningo olwengeziwe kulindeleke ukuthi lusetshenziswe kabanzi kumabhethri okugcina i-polymer lithium. I-electrolyte ye-polymer ehlobene nesigaba, i-electrolyte eqinile ye-inorganic inokuphepha okungcono, akukho ukuguquguquka, akukho ukuvutha, akukho nkinga yokuvuza.

Ngaphezu kwalokho, amandla emishini ye-electrolyte eqinile ye-inorganic aphakeme, izinga lokushisa elimelana nokushisa liphakeme kakhulu kunalelo le-electrolyte ewuketshezi kanye ne-polymer ephilayo, landise izinga lokushisa elisebenzayo lebhethri; i-inorganic material yenziwa ifilimu, okungenzeka ukuthi ifinyelele i-lithium battery miniaturization, futhi lolu hlobo lwebhethri lunokuphila isikhathi eside sokulondoloza lungandisa kakhulu inkambu yokusetshenziswa kwamabhethri e-lithium akhona. 2. Ukuthuthukisa inkinga yokuphepha ye-thermostability yezinto ze-electrode kubangelwa ngokuqondile i-electrolyte engaphephile, kodwa kusukela kumsuka wempande, kungenxa yokuthi ibhethri ngokwalo aliphezulu, ukuvela kokuphuma kokushisa okushisayo kubangelwa.

Ngaphandle kokuzinza kokushisa kwe-electrolyte, ukuzinza okushisayo kwe-electrolyte nakho kungenye yezizathu ezibaluleke kakhulu, ukuze ukuzinza okushisayo kwempahla ye-electrode nakho kuyingxenye ebalulekile yokuthuthukisa ukuphepha kwebhethri, kodwa i-electrode okukhulunywe ngayo lapha Ukuzinza okushisayo kwempahla akubandakanyi nje ukuzinza kwayo okushisayo, kodwa futhi kuhlanganisa ukuqina kokushisa kwe-electrolyte. Ngokuvamile, ukuzinza okushisayo kwempahla ye-electrode engalungile kunqunywa umsebenzi wesakhiwo sezinto ezibonakalayo kanye ne-electrode engalungile yokushaja. Mayelana ne-carbon material, i-spherical carbon material, efana ne-intermediate carbon microspheres (MCMB), enenani eliphansi, inkokhiso ephezulu kanye neplathifomu yokukhipha, ngakho-ke isimo sayo sokushaja sincane, futhi ukuzinza okushisayo kuqhathaniswa uma kuqhathaniswa.

Kuhle, ukuvikeleka okuphezulu. I-Li4Ti5O12 yesakhiwo se-spinel ingcono kunokuqina kwesakhiwo se-graphite laminated, futhi isiteji sokushaja nokukhipha siphezulu kakhulu, ngakho-ke ukuzinza okushisayo kungcono futhi ukuphepha kuphakeme. Ngakho-ke, i-MCMB noma i-Li4Ti5o12 ivamise ukusetshenziswa kubhethri ye-lithium-ion yezidingo zokuphepha ukuze kuthathelwe indawo igraphite evamile njenge-electrode engeyinhle.

Ngaphezu kwempahla ngokwayo, ukuzinza okushisayo kwempahla ye-electrode engalungile kukhathazeke kakhulu ngokuzinza kokushisa kwe-solid electrolyte membrane (SEI) ye-electrolyte interface engalungile ye-interface ye-electrolyte, evame ukusetshenziswa yinto efanayo, ikakhulukazi i-graphite. Cabanga ukuthi yisinyathelo sokuqala lapho ukulahlekelwa ukushisa. Kunezindlela ezimbili ezibalulekile zokuthuthukisa ukuzinza okushisayo kwefilimu ye-SEI: enye i-surface coating yezinto ezingalungile ze-electrode, njengokugqoka i-amorphous charcoal noma ungqimba lwensimbi ebusweni begraphite; enye iwukwengeza izithasiselo ezakha ifilimu ku-electrolyte, ebhethrini Ngesikhathi senqubo yokwenza kusebenze, zakha ifilimu ye-SEI enokuqina kwempahla ye-electrode, enenzuzo ekutholeni ukuzinza okungcono kokushisa.