Exploration of Mixed Polyanionic Compound for Potential High-Voltage Cathode Materials in Sodium-Ion Batteries

作     者：Tianyi Song Nanzhong Wu Xiao Zheng Xinyuan Zhang Shu Guo Qi Yan Wenjiao Yao Yongbing Tang 

作者机构：Advanced Energy Storage Technology Research CenterShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055 Shenzhen College of Advanced TechnologyUniversity of Chinese Academy of SciencesShenzhen 518055 Tianjin Key Laboratory of Functional Crystal MaterialsInstitute of Functional CrystalsTianjin University of TechnologyTianjin 300384 Shenzhen Institute for Quantum Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055 International Quantum AcademyShenzhen 518048 Shenzhen Key Laboratory of Energy Materials for Carbon NeutralityShenzhen 518055 

出 版 物：《CCS Chemistry》 (中国化学会会刊(英文))

年 卷 期：2025年第7卷第2期

页      面：554-563页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：support from the National Key R&D Program of China(grant no.2022YFB2402600) the National Natural Science Foundation of China(grant nos.52125105,52061160484,52372250) the Shenzhen Science and Technology Planning Project(grant nos.RCYX20221008092850072,GJHZ20210705141407023,ZDSYS20210706144000003) the Guangdong Basic and Applied Basic Research Foundation(grant nos.2021A1515010184 and 2022A1515110031) 

主　　题：polyanionic compounds sodium-ion batteries cathodes high voltage hydrothermal synthesis 

摘      要：Mixed polyanionic compounds are potential cathode materials for sodium-ion batteries(SIBs).Herein,considering the advantages of the strong inductive effect of sulfate and the diverse,flexible coordination modes of oxalate,we systematically explored mixed sulfate-oxalate systems and obtained three sodium-contained polyanionic ***,the novel three-dimensional Na_(2)Co(C(2)O_(4))(SO_(4))·xH_(2)O(x=1-1.5)was found to be a promising cathode material for SIBs with good electrochemical activity at high *** present study sets an example of exploring sodium-storage materials in the mixed polyanionic family and provides new insights into designing novel high-voltage cathodes for sodium-based energy storage devices.