Abstract:
Lithium-ion batteries (LIBs) have approached the upper limit of the energy density allowed by conventional intercalated anode materials, and carbon-based anode materials can no longer meet the requirements of electric vehicles and low-altitude economics. Alloy-type and transition-type non-graphite anode materials have gradually attracted extensive attention and research due to their advantages in terms of higher theoretical specific capacity and suitable voltage platforms. However, alloy-type and conversion-type anode materials are susceptible to active lithium loss during lithium-ion intercalation/deintercalation, reducing coulomb efficiency and rapid capacity degradation. An effective solution to these problems is the pre-lithiation of the anode material. Most of the existing reviews report the progress of pre-lithiation of silicon-based alloy-type anode materials, and few of them introduce the progress of pre-lithiation of transition metal oxides conversion-type anode materials. The research progress of pre-lithiation of anode materials for non-graphite LIBs in recent years, including the conversion-type anode materials, are reviewed mainly from three aspects:physical, electrochemical and chemical pre-lithiation, with a prospect of the development trend of pre-curing technology.