Emerging Battery Systems with Metal as Active Cathode Material

Abstract

Abstract The high‐cost and limited availability of raw materials for lithium‐ion batteries hinder their future development and urge researchers to explore alternative battery systems. Among them, batteries utilizing the electrochemical redox reaction of metals such as Cu, Fe, Sn, etc. as the cathode to reversibly store and release energy are attractive because their raw materials are common and abundant. This review examines this type of novel battery system, introduces its basic mechanism and problems, analyses the strategies that are used to improve its reversibility and cycling stability and also proposes some possible future directions of investigations.

Keywords

• Cation crossover
• dissolution/deposition
• electrolyte
• membrane
• metal cathode