Development of Metal and Metal-Based Composites Anode Materials for Potassium-Ion Batteries

Abstract

Potassium-ion batteries (KIBs) are considered the next powerful potential generation energy storage system because of substantial potassium resource availability and similar characteristics with lithium. Unfortunately, the actual application of KIBs is inferior to that of lithium-ion batteries (LIBs), in which the finite energy density, ordinary circular life, and underdeveloped fabrication technique dominate the key constraints. Various works have recently been directed to growing novel anode electrodes with superior electrochemical capability. Noticeably, metals/metal oxides materials (e.g., Sb, Sn, Zn, SnO₂, and MoO₂) have been widely investigated as KIBs anodes because of high theoretical capacity, suggesting outstanding promise for high-energy KIBs. In this review, the latest research of metals/metal oxides electrodes for potassium storage is summarized. The major strategies to control the electrochemical property of metals/metal oxides electrodes are discussed. Finally, the future investigation foreground for these anode electrodes has been proposed.

Keywords

Potassium-ion batteries / Metal-based anodes / Metallic oxide-based anodes / Electrochemical performance / Nanostructure

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