Dendrite‐Free 3D Lithium Metal Anode Formed in a Cellulose Based Separator for Lithium‐Metal Batteries

Abstract Lithium metal is the best candidate anode for high specific energy density batteries because of its capacity and low negative potential. However, lithium dendrite formation growth during plating stripping cycles have hindered use as practical batteries. Here, a mechanism suppression in composite separator Kimwipe paper (KW) porous polyethylene (PE) various electrolytes was examined. The Li/KW/PE electrode an electrolyte 1 m Li(CFSO 3 ) 2 N (LiFSI) 1,4, dioxane (DX)‐1,2 dimethoylethane (DME) (1 : v/v) with wide electrochemical window successfully cycled without short‐circuiting at 5 mA cm −2 25 °C 10 h over cycles. deposited into cellulose fiber network process, which resulted three‐dimensional (3D) electrode. Whereas, KW PE not effective to suppress conventional carbonate based LiPF 6 ethylene carbonate‐dimethyl carbonate.