Anode-free lithium metal batteries are expected to become the next generation of energy storage devices due to their ultra-high energy density,excellent safety,and good economy.However,a series of problems such as high interface contact resistance,lithium dendrites,and dead lithium formation lead to a shortened cycle life.In recent years,researchers have conducted some research works on optimizing electrolytes and deposition substrates to extend battery life.This article elaborated on the current development status and existing problems of anode-free lithium metal batteries,focusing on the research progress of electrolyte optimization,SEI interface modification,current collector modification and other strategies to improve the cycling stability of batteries.Finally,the future opportunities and possible development directions of anode-free lithium metal batteries were analyzed and discussed.
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