Constructing a Stable Lithium Metal–Gel Electrolyte Interface for Quasi-Solid-State Lithium Batteries Tong-Tong Zuo Yang Shi Xiong-Wei Wu Peng-Fei Wang Shu-Hua Wang Ya-Xia Yin Wen-Peng Wang Qiang Ma Xian-Xiang Zeng Huan Ye Rui Wen Yu-Guo Guo 10.1021/acsami.8b12986.s002 https://acs.figshare.com/articles/media/Constructing_a_Stable_Lithium_Metal_Gel_Electrolyte_Interface_for_Quasi-Solid-State_Lithium_Batteries/7017395 Interfacial problems, including interfacial stability and contact issues, severely plague the practical application of Li metal anodes. Here we report an interfacial regulation strategy that stabilizes the Li metal-gel electrolyte interface through <i>in situ</i> constructing a stable solid electrolyte interphase (SEI) layer. By stabilizing the interface of Li metal anodes, the gel electrolyte enables dendrite-free morphology and high plating/stripping efficiency. A systematic analysis further confirms that the formed SEI layer is responsible for homogeneous deposition and stable cycling performance. Benefiting from the interfacial stability between electrodes and electrolytes, the lifespan of Li metal batteries is extended. 2018-08-24 00:00:00 gel electrolyte regulation strategy electrolyte interphase stability Li metal anodes Li metal batteries dendrite-free morphology SEI layer Li metal-gel electrolyte interface contact issues Quasi-Solid-State Lithium Batteries Interfacial problems cycling performance