fig4

Figure 4. (A) Mechanism for polymerization of VC. (B) TG analysis of different electrolytes in FRSE electrolyte system. This figure is quoted with permission from Tan et al.^[69] (C) Digital image of the quasi-solid electrolyte membrane. This figure is quoted with permission from Chen et al.^[71] (D) Microstructure, thermotolerance and flammability of the P(AN-DEVP)-based membrane. Thermal shrinkage of PAN and P(AN-DEVP) membranes. (E) Burning tests of PAN-GPEs and PA1D1-GPE. This figure is quoted with permission from Long et al.^[72] (F) Possible flame-retardant mechanisms of NGPE; polymerized BCPN would release PO· radicals when heated, blocking the exothermic chain reactions. The inert gases, the decomposition products of polymerized BCPN (for example, N₂), further inhibit the combustion process. R₁ and R₂ represent alkyl chains of ethers. (G) Voltage changes and the corresponding infrared thermal imaging photographs of fully charged Li||1 M LiPF₆ in EC:DMC||NCM811 and Li||NGPE||NCM811 pouch cells during nail penetration tests. (H) LSV curves and the corresponding infrared thermal imaging photographs of Li||1 M LiPF₆ in EC:DMC||NCM811 and Li||NGPE||NCM811 pouch cells at a scan rate of 20 mV s^-1 from the open circuit voltage to 10 V. This figure is quoted with permission from Meng et al.^[16].