(Lithium karfe anode) Interfacial lokaci na sabon anion-samu m electrolyte

Solid Electrolyte Interphase (SEI) ana amfani dashi sosai don bayyana sabon lokaci da aka samu tsakanin anode da electrolyte a cikin batura masu aiki.Babban ƙarfin ƙarfin ƙarfin lithium (Li) batirin ƙarfe na ƙarfe yana da matuƙar cikas ta wurin ajiyar lithium dendritic yana jagoranta ta SEI mara kyau.Ko da yake yana da fa'idodi na musamman don haɓaka daidaiton haɗin lithium, a cikin aikace-aikacen aikace-aikacen, tasirin SEI da aka samu na anion bai dace ba.Kwanan nan, rukunin bincike na Zhang Qiang daga Jami'ar Tsinghua ya ba da shawarar yin amfani da masu karɓar anion don daidaita tsarin lantarki don gina ingantaccen SEI wanda aka samu daga anion.Tris (pentafluorophenyl) borane anion receptor (TPFPB) tare da ramukan boron atom ɗin lantarki suna hulɗa tare da bis (fluorosulfonimide) anion (FSI-) don rage rage kwanciyar hankali na FSI-.Bugu da ƙari, a gaban TFPPB, nau'in ion clusters (AGG) na FSI- a cikin electrolyte ya canza, kuma FSI- yana hulɗa tare da ƙarin Li +.Sabili da haka, ana haɓaka lalata FSI- don samar da Li2S, kuma an inganta kwanciyar hankali na SEI da aka samu daga anion.

SEI yana kunshe ne da abubuwan rage rugujewa na electrolyte.Abun da ke ciki da tsarin SEI galibi ana sarrafa su ta hanyar tsarin electrolyte, wato, hulɗar microscopic tsakanin sauran ƙarfi, anion, da Li +.Tsarin electrolyte yana canzawa ba kawai tare da nau'in ƙarfi da gishiri na lithium ba, har ma tare da ƙaddamar da gishiri.A cikin 'yan shekarun nan, high-concentration electrolyte (HCE) da na gida high-concentration electrolyte (LHCE) sun nuna fa'idodi na musamman a cikin daidaitawar ƙarfe na lithium anodes ta hanyar samar da ingantaccen SEI.Matsakaicin adadin kuzari zuwa gishirin lithium yayi ƙasa (kasa da 2) kuma an gabatar da anions a cikin kumfa na farko na warwarewar Li+, suna ƙirƙirar nau'ikan ion nau'i-nau'i (CIP) da tarawa (AGG) a cikin HCE ko LHCE.Abubuwan da ke tattare da SEI daga baya an tsara su ta anions a cikin HCE da LHCE, wanda ake kira SEI-wanda aka samu.Duk da kyakkyawan aikin da yake yi wajen tabbatar da ƙarfin ƙarfe na lithium, SEIs na yanzu da aka samu daga anion bai isa ba wajen saduwa da ƙalubalen yanayi masu amfani.Sabili da haka, ya zama dole don ƙara haɓaka kwanciyar hankali da daidaituwa na SEI da aka samu daga anion don shawo kan ƙalubalen a ƙarƙashin yanayi na ainihi.

Anions a cikin nau'i na CIP da AGG sune manyan abubuwan da aka samo asali na SEI.Gabaɗaya, tsarin tsarin electrolyte na anions ana sarrafa shi a kaikaice ta hanyar Li+, saboda ingantaccen cajin ƙarfi da ƙwayoyin diluent yana cikin rauni kuma ba zai iya yin hulɗa da anions kai tsaye ba.Saboda haka, sabbin dabaru don daidaita tsarin sinadarai na anionic electrolytes ta hanyar yin hulɗa kai tsaye tare da anions ana tsammanin su sosai.