Summary:

The invention provides a cathode and anode synergistic lithium replenishment electrode and battery. Therein, the anode complementary lithium electrode is an inorganic rich lithiated electrode after graphite is prelithiated by biphenyl lithium and then treated with vinyl fluorocarbonate and ethoxy (pentafluoro) cyclotriphosphazene, and the mass ratio of vinyl fluorocarbonate and ethoxy (pentafluoro) cyclotriphosphazene is 5~3: 2~1. The cathode lithium supplement electrode includes a cathode layer and a lithium supplement layer coated on the cathode layer, and the cathode layer is a lithium iron phosphate cathode layer, and the lithium supplement layer is a Mo-W@BNC-supported lithium oxalate and lithium squarate composite; wherein the mass ratio of the lithium supplement layer and the cathode layer is 0.5~2:15~20, and the mass ratio of the Mo-W@BNC to lithium oxalate and lithium squarate is 0.5~2: 5~10. The electrode for the lithium loss of the battery before and during service, through the lithium supplement material activity regulation, the use of cathode and anode synergistic high-efficiency lithium supplementation technology, breaking the shackles of the existing battery material system and structure, for the development of high-performance batteries suitable for large-scale energy storage is of great significance.

Link：http://epub.cnipa.gov.cn/patent/CN119069642A