Constructing methyl methacrylate/MXene artificial solid-electrolyte interphase layer for lithium metal batteries with high electrochemical performance

Tailoring the interface of lithium metal batteries with an in situ formed gel polymer electrolyte

“…17 The monomers with unsaturated double bonds can be polymerized or cross-linked using the free radical polymerization method. 18,19 Some unsaturated monomers, such as methyl methacrylate, 20 acrylonitrile vinylidene carbonate, 21 polyethylene glycol acrylate 22 etc. , have been reported.…”

“…17 The monomers with unsaturated double bonds can be polymerized or cross-linked using the free radical polymerization method. 18,19 Some unsaturated monomers, such as methyl methacrylate, 20 acrylonitrile vinylidene carbonate, 21 polyethylene glycol acrylate 22 etc., have been reported. Since some of the lm formation additives in LE, such as vinylene carbonate and 4-vinyl-1,3-dioxolan-2-one, also have unsaturated double bonds, polymerization may lead to the loss of their effect on forming a stable solid electrolyte interface (SEI) lm.…”

Superlithiophilic Ag Particles Embedded in Flexible Polymer Solid Electrolyte Interface Films for Dendrite-Free Lithium Metal Anodes

“…To meet the ever-growing demands of Li secondary batteries with high energy density for longer endurance applications, the scalable fabrication of electrodes with higher capacity is greatly important. − Among all of the current candidates, Li metal electrodes have been regarded as the “Holy Grail” anodes because of their very high specific capacity (3860 mAh g –1 ) in theory and the smallest electrode potential (−3.04 V) vs standard hydrogen electrodes. − Nevertheless, Li metal surfaces are prone to react with the electrolytes and thus form the natural solid electrolyte interface (SEI) films, which are typically brittle and nonuniform, causing uneven Li + diffusion, uncontrollable Li deposition, and dendrite formation on the Li metal anodes. − The continuous formation of dendritic Li and large volume changes of the metallic Li anodes during the Li stripping/replating process could bring out repeated cracking and regeneration of the brittle SEI films, leading to the structural pulverization and “dead Li” formation. − These intrinsic issues of the metallic Li anodes bring out the low Coulombic efficiency, short lifetime, and even safety problems of the Li metal secondary batteries, which cannot satisfy the requirements of practical applications. − …”

Study on Stable Lithiophilic Ag Modification Layer on Copper Current Collector for High Coulombic-Efficiency Lithium Metal Anode

“…3D Cu foam), 10,11 artificial SEI engineering (e.g. covalent organic framework coating), 12,13 use of solid-state electrolytes (SSEs) (e.g. Li 6 PS 5 Cl), 14,15 and combination of the above strategies (e.g.…”