The Application of Bismuth-based Compounds in the Anode of Sodium-ion Batteries

Abstract

The sodium ion battery (SIB) system has outstanding advantages such as high experimental specific capacity, chemical principles similar to lithium-ion batteries, as well as abundant resources, making it an ideal next-generation energy storage system. At present, research on SIBs cathode materials is relatively abundant and has been applied to SIBs. However, for the anode material of SIBs, since the size of the sodium ion is relatively large, there are few materials available for the sodium ion storage, so it is still necessary to explore materials that combine high capacity with good cycling performance. Among numerous anode materials, bismuth compounds are regarded as one of the candidate materials for the anode of SIBs due to their excellent rate performance, high capacity, and relatively good safety performance. This article first introduces the current battery system and analyzes bismuth compound materials as SIBs anode materials. Subsequently, the author outlines the synthesis methods and electrochemical properties of different bismuth-based anodes. Finally, various bismuth-based materials are compared and the challenges they will face in the future are analyzed.