Muva nje, u-Ding Jianning wase-Jiangsu University kanye nabanye basebenzise i-lithium iron phosphate egcotshwe i-mesoporous carbon njengempahla ye-electrode eqinile kanye ne-hard carbon material ecebile ngesakhiwo se-mesoporous esilungiswe ubuchwepheshe be-electrospinning njengento engalungile ye-electrode. I-Lithium bistrifluoromethanesulfonimide LiTFSi usawoti kanye ne-electrolyte ye-DIOX (1,3-dioxane) + EC (ethylene carbonate) + VC (vinylidene carbonate) izinyibilikisi zihlanganiswa zibe yibhethri ye-lithium-ion. Impahla yebhethri yebhethri esunguliwe inezici ezinhle kakhulu zokudlulisa i-ion kanye nezici zokuchithwa ngokushesha kwe-lithium ion, kanye ne-electrolyte enezinga lokushisa eliphansi eligcina ukusebenza kahle emazingeni okushisa aphansi, iqinisekisa ukuthi ibhethri lisasebenza ngokujwayelekile ku-minus 60 °. C.
Njengobuchwepheshe obuthuthuka ngokushesha kakhulu embonini yebhethri, umphakathi wamukela kabanzi amabhethri e-lithium-ion ngokusebenza kwawo okuphezulu kwamandla kagesi, ukuminyana kwamandla aphezulu, impilo yomjikelezo omude, ukuzikhipha okuphansi, akukho mphumela wenkumbulo, kanye nokuvikelwa kwemvelo "okuluhlaza". Imboni iphinde yatshala izimali eziningi zocwaningo. Kunocwaningo olwengeziwe mayelana ne-lithium ions engakwazi ukuzivumelanisa nezinga lokushisa eliphansi kakhulu. Kodwa-ke, ngaphansi kwezindawo zokushisa eziphansi, i-viscosity ye-electrolyte izokhula kakhulu, futhi izokwengeza ukunyakaza kwamabhethri e-lithium-ion phakathi kwezinto ze-electrode. Ngaphezu kwalokho, i-electrolyte izoba yinhle emazingeni okushisa aphansi. Isendlalelo se-SEI esakhiwe ku-electrode engalungile sizoshintsha isigaba futhi singazinzi kakhulu. Ngakho-ke, izinto ze-electrode ezinhle nezimbi kulokhu okusunguliwe zihlinzeka ngendawo yokwakheka kwe-SEI ezinzile, ibanga elifushane lokudlulisela, kanye ne-electrolyte ene-viscosity ephansi emazingeni okushisa aphansi, eqaphela ibhethri ye-lithium esakwazi ukusebenza ekushiseni okuphansi kakhulu. ngaphansi kuka-60°C. . Inkinga yezobuchwepheshe okufanele ixazululwe ngokusungulwa ukunqoba umkhawulo wokusetshenziswa kwezinto zebhethri ye-lithium ezindaweni ezinokushisa okuphansi kanye nenkinga ye-viscosity ephezulu yama-electrolyte avamile emazingeni okushisa aphansi kanye nokuhamba kwe-ion ephansi, nokuhlinzeka ngokushaja okuphezulu. kanye nokushajwa ngezinga lokushisa eliphansi kakhulu Ibhethri ye-lithium-ion kanye nendlela yokuyilungisa kusebenzisa ibhethri ye-lithium-ion ukuze kutholakale ukushajwa okuhle kakhulu nokusebenza kokukhipha emazingeni okushisa aphansi.
Umfanekiso 1 Ukuqhathaniswa kokusebenza kwe-electrochemical of izinga lokushisa eliphansi amabhethri e-lithium-ion ekamelweni lokushisa kanye nezinga lokushisa eliphansi.
Umphumela onenzuzo wokusungulwa ukuthi lapho izinto eziyingozi ze-electrode zisetshenziswa njengeshidi le-electrode, akukho binder edingekayo. Ngeke kunciphise i-conductivity, futhi kuzothuthukisa izinga lokusebenza.
Okunamathiselwe: ulwazi lwelungelo lobunikazi
Igama lobunikazi: Indlela yokulungiselela yebhethri ye-lithium-ion enezinga lokushisa eliphansi kakhulu elingasebenza ngaphansi kuka-60°C
Inombolo yokushicilelwa kwesicelo CN 109980195 A
Idethi yokumenyezelwa kwesicelo 2019.07.05
Inombolo yesicelo 201910179588 .4
Usuku lokufaka isicelo 2019.03.11
Umfakisicelo waseJiangsu University
Umsunguli u-Ding Jianning Xu Jiang Yuan Ningyi Cheng Guanggui