锂金属负极中抑制锂枝晶生长的研究进展

Research Progress on Inhibition of Dendrite Growth in Lithium Metal Anode

不受控的锂枝晶生长限制了锂金属负极在二次电池中的应用。金属锂和电解液之间的SEI膜的形态、电极本身的热力学和动力学性能以及电流密度都是影响锂枝晶生长的重要因素。根据影响锂枝晶生长的不同因素,不同策略被提出用来抑制锂枝晶生长,主要有优化SEI膜、采用固态电解质、结构化复合锂金属负极等。综述了这些策略发展过程,讨论了不同类型的策略的优点以及存在的缺陷,展望了抑制锂金属负极锂枝晶生长的存在前景的策略方向。

Uncontrolled dendrite growth limits the application of lithium metal anode in secondary batteries.The morphology of SEI film between lithium and electrolyte,the thermodynamic and kinetic properties of the electrode itself,and the current density are all important factors affecting the growth of lithium dendrite.According to the different factors affecting the growth of lithium dendrite,different strategies have been proposed,such as optimizing SEI film,using solid electrolyte,structured composite lithium metal anode,and so on.The development process of these strategies is reviewed,the advantages and disadvantages of different strategies are discussed,and the promising strategies for inhibiting the growth of lithium dendrite in lithium metal anode have been prospected.