Unlocking the multi-electron transfer reaction in NASICON-type cathode materials

作     者：Yuan Liu Xiaohui Rong Fei Xie Yaxiang Lu Junmei Zhao Liquan Chen Yong-Sheng Hu 

作者机构：Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190People’s Republic of China College of Materials Science and Optoelectronic TechnologyUniversity of Chinese Academy of SciencesBeijing 100049People’s Republic of China Yangtze River Delta Physics Research Center Co.LtdLiyang 213300People’s Republic of China Huairou DivisionInstitute of PhysicsChinese Academy of SciencesBeijing 101400People’s Republic of China CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijingPeople’s Republic of China 

出 版 物：《Materials Futures》 (材料展望（英文）)

年 卷 期：2023年第2卷第2期

页      面：109-122页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Key R&D Program of China(2022YFB3807800) National Natural Science Foundation(NSFC)of China(51725206,52122214,52002394,and 52072403) Youth Innovation Promotion Association of the Chinese Academy of Sciences(2020006). 

主　　题：NASICON Na-ion batteries cathode materials multi-electron transfer reactions 

摘      要：The growing concern about scarcity and large-scale applications of lithium resources has attracted efforts to realize cost-effective phosphate-based cathode materials for next-generation Na-ion batteries(NIBs).In previous work,a series of materials(such as Na_(4)Fe_(3)(PO_(4))_(2)(P_(2)O_(7)),Na_(3)VCr(PO_(4))_(3),Na_(4)VMn(PO_(4))3,Na_(3)MnTi(PO_(4))_(3),Na_(3)MnZr(PO_(4))3,etc)with∼120 mAh g^(-1) specific capacity and high operating potential has been proposed.However,the mass ratio of the total transition metal in the above compounds is only∼22 wt%,which means that one-electron transfer for each transition metal shows a limited capacity(the mass ratio of Fe is 35.4 wt%in LiFePO_(4)).Therefore,a multi-electron transfer reaction is necessary to catch up to or go beyond the electrochemical performance of LiFePO_(4).This review summarizes the reported NASICON-type and other phosphate-based cathode materials.On the basis of the aforementioned experimental results,we pinpoint the multi-electron behavior of transition metals and shed light on designing rules for developing high-capacity cathodes in NIBs.