本发明涉及电池技术领域，涉及一种锂电解液，及其在氟化石墨二次电池中的应用。本发明的锂电解液包括电解质和有机溶剂；所述电解质主要包含碘化锂，有机溶剂为N,N‑二甲基丙烯基脲。实验结果表明，使用所述锂电解液，商用氟化石墨正极的首圈输出接近其理论值的比容量，且后续可以在2~3.4 V(vs.Li/Li+)的电压范围内实现可逆充放电并稳定循环20圈以上，放电电压平台在3.2 V(vs.Li/Li+)附近，放电容量最大可达250 mAh g‑1。此外，本发明涉及的锂电解液，对于废弃的氟化石墨正极，以及多孔碳‑氟化锂的混合物电极，均有良好的兼容性。
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