(I-Lithium Metal Anode) Isigaba Sokuhlobisa I-Anion-Derived Electrolyte

I-SOOL electrolyte Interphase (SEI) isetshenziswa kabanzi ukuchaza isigaba esisha esakhiwe phakathi kwe-anode ne-electrolyte kumabhethri okusebenza. Amabhethri we-Metal Energy aphezulu we-Lithium (LI) aphazanyiswa kakhulu yiDenritic Lithium Desition eqondiswe yi-SEI ENGAQALAYO. Yize inezinzuzo ezihlukile ekuthuthukiseni ukufana kwe-lithium desition, kuzinhlelo zokusebenza ezingokoqobo, umphumela we-sei asuselwa ku-anion afanelekile. Muva nje, iqembu lokucwaninga likaZhang Qiang elivela eTsinghua University lihlongozwa ukusebenzisa ama-anion receptors ukulungisa i-electrolyte sakhiwo ukwakha i-SEI etholwe yi-anion etholwe. I-Tris (Pentafluorororohyl) I-Borane Anion Receptor (TPFPB) ngama-athomu e-athomu e-elektroni angenayo nge-ANION (FSIOSOSOSIMIND) ANONION (FSI-) ukunciphisa ukuncishiswa kokuncipha kwe-FSI-. Ngaphezu kwalokho, phambi kwe-TFPPB, uhlobo lwe-Ion Cluster (AGG) lwe-FSI- i-electrolyte isishintshile, futhi isebenzisana nokuningi nge-LI +. Ngakho-ke, ukubola kwe-FSI- kukhuthazwa ukukhiqiza i-LI2S, futhi ukuqina kwe-Antion-Derived Sei kuyathuthuka.

I-SEI yakhiwa ngemikhiqizo yokuncipha evuthayo ye-electropoliyte. Ukwakheka nokwakheka kwe-SEI kulawulwa ikakhulukazi ukwakheka kwe-electrolyte, okungukuthi, ukusebenzisana okukhulu phakathi kwe-solvent, anion, kanye ne-LI. +. Ukwakheka kwezinguquko ze-electrolyte hhayi kuphela ngohlobo lwe-solvent kanye nosawoti we-lithium, kodwa futhi nokuhlushwa kukasawoti. Eminyakeni yamuva nje, i-electoryte ephezulu yokuhlushwa i-electrolyte (HCE) kanye ne-electrolyte yasendaweni ephezulu yokuhlushwa (LHCE) ikhombise izinzuzo ezihlukile ekuqiniseni i-lithium Metal Anodes ngokwakha i-SEI ezinzile. Isilinganiso se-molar se-solvent kusawoti se-lithium siphansi (ngaphansi kuka-2) futhi u-anions wethulwa emgodini wokuqala we-LI +, wakha ama-Ion ngababili (i-AGG) ne-Aggression (AGCE) ku-HCE noma i-LHCE. Ukwakheka kwe-SEI ngemuva kwalokho kulawulwa ngu-anions ku-HCE noLhce, obizwa nge-Anion-Derived Sei. Naphezu kokusebenza kwayo okukhangayo ku-Lithium Metal Anodes ye-Lithium, i-Antion-Derive ethathwe yamanje anganele ekuhlangabezaneni nezinselelo zezimo eziwusizo. Ngakho-ke, kuyadingeka ukuthuthukisa ukuqina nokufana kwe-Anion-Derived Sei ukunqoba izinselelo ngaphansi kwezimo zangempela.

I-anions ngesimo se-CIP ne-AGG yiyona eyandulela ngaphambili ye-Anion-Derived Sei. Ngokuvamile, ukwakheka kwe-electrolyte kulawulwa ngokungaqondile yi-LI +, ngoba inkokhiso emihle ye-solvent kanye nama-molekyuli angcolile ayasebenza kahle futhi ayikwazi ukuxhumana ngqo no-anions. Ngakho-ke, amasu amasha okulawula ukwakheka kwe-Anionic Electrolyte ngokuxhumana ngokuqondile no-anion alindelwe kakhulu.