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Title:: Research Progress of Biomass Carbon Materials as Anode Materials for Sodium/Potassium Ion Batteries

Author(s):: WANG Huayan1; CHEN Huixin1; ZHANG Qiaobao2; ZHANG Li3; (1.Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen 361021, China) (3.College of Materials, Xiamen University, Xiamen 361005, China) (2.College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China)

Keywords:: sodium ion battery; potassium ion battery; anode material; hard carbon; electrochemical performance

Abstract:: Sodium/potassium ion batteries (SIB/PIB) have attracted widespread attentions in the fields of low-cost renewable energy and energy storage due to the abundant reserves of sodium and potassium, as well as their chemical properties similar to lithium. As the key factors to promoting the development of SIB/PIB, the development of low-cost and high-performance anode materials will improve their competitiveness and feasibility. In this regard, the environmentfriendly and low-cost biomass-based hard carbon materials with fine biological hierarchical structure, excellent surface electrochemical activity and conductivity can almost be the preferred materials for anode materials of SIB/PIB. The inherent larger interlayer spacing of SIB/PIB facilitates the insertion and deintercalation of sodium and potassium ions with large ionic radius. Based on this, the latest research progress of biomass carbon materials as anode materials of SIB/PIB was reviewed. The preparation methods of biomass carbon materials with different microstructures were introduced. And, the relationship between electrochemical performances and structures of biomass carbon materials was analyzed. Finally, the facing challenge and future development of biomass carbon materials were discussed and prospected.