Abstract:
Sodium metal is considered as an ideal anode material for high energy batteries because of its low cost, high natural abundance, low redox potential and high theoretical specific capacity. However, sodium metal is prone to volume expansion and growth of sodium dendrite in the process of charge and discharge, which leads to the deterioration of battery performance and safety risks, and seriously hinders the application of sodium metal battery in practice. In order to solve the above problems, a lot of exploration has been carried out. Among them, the construction of three-dimensional (3D) conductive framework can effectively reduce local current density, decrease nuclear energy, inhibit dendrite growth and slow down volume expansion, which has great potential in future applications. In this paper, the recent progress of three-dimensional conductive framework to improve the cycling stability of sodium metal anode is reviewed, summarized and classified. Finally, the development prospect and future research direction of three-dimensional conductive framework in sodium metal anode are discussed from two aspects of basic research and practical application.