(Lithium metal anode) Icyiciro cyimiterere ya anion ikomoka kuri electrolyte ikomeye

Interphase ikomeye ya Electrolyte (SEI) ikoreshwa cyane mugusobanura icyiciro gishya cyakozwe hagati ya anode na electrolyte muri bateri zikora.Batteri z'icyuma za lithium (Li) zifite ingufu nyinshi zibangamiwe cyane na dendritic lithium yoherejwe iyobowe na SEI idahuje.Nubwo ifite ibyiza byihariye mugutezimbere uburinganire bwa lithium, mubikorwa bifatika, ingaruka za SEI zikomoka kuri anion ntabwo ari nziza.Vuba aha, itsinda ry’ubushakashatsi bwa Zhang Qiang ryo muri kaminuza ya Tsinghua ryasabye gukoresha reseptor ya anion kugirango bahindure imiterere ya electrolyte kugirango bubake SEI ihamye ikomoka kuri anion.Tris (pentafluorophenyl) borane anion reseptor (TPFPB) hamwe na atome ya boron ibura electron ikorana na anion ya bis (fluorosulfonimide) (FSI-) kugirango igabanye ituze rya FSI-.Mubyongeyeho, imbere ya TFPPB, ubwoko bwa ion cluster (AGG) ya FSI- muri electrolyte yarahindutse, kandi FSI- ikorana na Li + nyinshi.Kubwibyo, kubora kwa FSI- kuzamurwa kubyara Li2S, kandi ituze rya SEI ikomoka kuri anion iratera imbere.

SEI igizwe nibicuruzwa bigabanuka bya electrolyte.Ibigize n'imiterere ya SEI bigenzurwa cyane cyane nuburyo bwa electrolyte, ni ukuvuga imikoranire ya microscopique hagati ya solve, anion, na Li +.Imiterere ya electrolyte ntabwo ihinduka gusa nubwoko bwumunyu wa solide na lithium, ariko kandi hamwe nubwinshi bwumunyu.Mu myaka yashize, electrolyte yibanda cyane (HCE) hamwe na electrolyte yibanze cyane (LHCE) yerekanye ibyiza byihariye muguhindura anode ya lithium ikora SEI ihamye.Ikigereranyo cya molarike yumuti wumunyu wa lithium ni muke (munsi ya 2) kandi anion zinjizwa mumashanyarazi ya mbere yo gukiza ya Li +, ikora ion ebyiri (CIP) hamwe no guteranya (AGG) muri HCE cyangwa LHCE.Ibigize SEI nyuma bigengwa na anion muri HCE na LHCE, bita SEI ikomoka kuri anion.Nubwo imikorere ishimishije muguhindura ibyuma bya lithium ibyuma, SEI ikomoka kuri anion ntabwo ihagije mugukemura ibibazo byubuzima bwiza.Niyo mpamvu, birakenewe kurushaho kunoza ituze nuburinganire bwa SEI ikomoka kuri anion kugirango dutsinde ibibazo mubihe nyabyo.

Anion muburyo bwa CIP na AGG nibyibanze byingenzi kuri SEI ikomoka kuri anion.Muri rusange, imiterere ya electrolyte ya anion igenzurwa mu buryo butaziguye na Li +, kubera ko amafaranga meza ya molekile ya solvent na diluent iba idahagije kandi ntishobora gukorana na anion.Kubwibyo, ingamba nshya zo kugenzura imiterere ya anionic electrolytite ikorana na anion mu buryo butaziguye.