Lithium bis(trifluoromethylulfon)imide (LiTFSI), ethoxy(pentafluoro)cyclotriphosphazene (PFPN), 1,3-dioxolane (DOL), 1,2-dimethoxyethane (DME) were purchased from DoDo Chemical Technology Co., Ltd. N-Methyl-2-pyrrolidone (NMP) was provided by Shanghai Lingfeng Chemical Reagent Co., Ltd. N-Propanol was obtained from Aladdin Reagents (Shanghai) Co., Ltd. LA133 was bought from the Sichuan Indigo Materials Science and Technology Group Co., Ltd. Carbon black was provided by Cabot Co., Ltd. Li foil was purchased from the China Energy Lithium (Tianjin) Co., Ltd. Cu foil and aluminum foil was obtained from the HF-Kejing Co., Ltd. Polypropylene (Celgard, 2325) was obtained from the Zhongtian Technology Group Co., Ltd.