Suppression of partially irreversible phase transition in O′3-Na_(3)Ni_(2)SbO_(6)cathode for sodium-ion batteries by interlayered structural modulation

作     者：Jingjie Feng Jiajie Li Ni Wen Siyuan Chen Jian Wu Qinghua Fan Youzhong Dong Quan Kuang Yanming Zhao Jingjie Feng;Jiajie Li;Ni Wen;Siyuan Chen;Jian Wu;Qinghua Fan;Youzhong Dong;Quan Kuang;Yanming Zhao

作者机构：School of PhysicsSouth China University of TechnologyGuangzhou 510640GuangdongChina South China Institute of Collaborative InnovationSouth China University of TechnologyDongguan 523808GuangdongChina Guandong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510640GuangdongChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第31卷第10期

页      面：436-444,I0011页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：funded by the NSFC Grant(52177213)supported through NSFC Committee of China the foundation(2020A1414010346 and 2019622163008)supported through the Science and Technology Bureau of Guangdong Government sponsored by the Student Research Program(X202110561688)supported through South China University of Technology。 

主　　题：Sodium-ion batteries High-voltage electrochemistry Honeycomb-ordered materials Rb doping Structural modulation 

摘      要：As a promising cathode material for sodium ion batteries,honeycomb-ordered layered Na_(3)Ni_(2)Sb O_(6)still suffers from rapid capacity fading because of partially irreversible phase transition.Herein,a substitution of Na+by Rb+with a larger ionic radius in honeycomb layered Na_(3)-xRbxNi_(2)Sb O_(6)is proposed to modulate the interlayer structure.The results unveil that biphasic transition reversibility of the intermediate P′3phase is substantially enhanced,and the structure evolution behavior during the charge/discharge process changes due to the structural modulation,which contributes to a suppression of the unfavorable O_(1)phase and an alleviation of the lattice distortion.Moreover,Rb substituted samples exhibited an improved Na+(de)intercalation thermodynamics and kinetics.Attributed to the modifications,the sample with optimized Rb content delivers superior cycle stability and rate capacity,demonstrating a feasible strategy for suppressing irreversible phase transition and developing high-performance honeycomb layered materials for sodium ion batteries.