Ternary-phase layered cathodes toward ultra-stable and highrate sodium ion storage  

作　　者：Wen-Ji Yin Pei-Dan Su Qi Lu Xiao-Qiong Li Ji-Ming Peng Teng-Fei Zhou Ge-Meng Liang Yu-Liang Cao Hong-Qiang Wang Qing-Yu Li Si-Jiang Hu 

机构地区：[1]Guangxi Key Laboratory of Low Carbon Energy Materials,School of Chemistry and Pharmaceutical Sciences,Guangxi Normal University,Guilin,541004,China [2]Institutes of Physical Science and Information Technology,Anhui University,Hefei,230601,China [3]Department of Chemistry and Pharmaceutical Sciences,Guilin Normal College,Guilin,541199,China [4]College of Chemistry and Chemical Engineering,Huanggang Normal University,Huanggang,438000,China [5]School of Chemical Engineering and Advanced Materials,The University of Adelaide,Adelaide,5005,Australia [6]Engineering Research Center of Organosilicon Compounds and Materials of Ministry of Education,College of Chemistry and Molecular Sciences,Wuhan University,Wuhan,430072,China

出　　处：《Rare Metals》2024年第4期1589-1598,共10页稀有金属（英文版）

基　　金：financially supported by Guangxi Natural Science Foundation(No.2021GXNSFDA075012);the National Natural Science Foundation of China(Nos.U20A20249 and 22169004);the Natural Science Fund of Huanggang Normal University for Young Scholars(No.2014019203);the Special Fund for Guangxi Distinguished Expert;the Innovation Project of Guangxi Graduate Education(No.JGY2022031)。

摘　　要：With the shortage of lithium resources,sodiumion batteries(SIBs)are considered one of the most promising candidates for lithium-ion batteries.P2-type and O3-type layered oxides are one of the few cathodes that can access high energy density.However,they usually exhibit structural change,capacity decay,and slow Na ion kinetic.Herein,we present layered ternary-phase cathodes with P2,P3 and O3 phases by a lattice doping strategy,which is demonstrated by X-ray diffraction(XRD)refinement.Combining the characteristics of P2,P3 and O3 phases,the layered composites show performance improvement during long-term battery cycling.In particular,Na_(0.7)Li_(0.1)Co_(0.3-)Fe_(0.3)Mn_(0.3)O_(2)(NLCFM)delivers a reversible capacity of120.1 mAh·g^(-1)at 0.1C(1.0C=175 mA·g^(-1))with a superior capacity retention of 72.5%after 1000 cycles at10.0C.This work offers insights into the development of advanced cathode materials for SIBs.

关 键 词：Sodium-ion battery Cathode material Layered oxides Lattice doping Mixed phase 

分 类 号：TB34[一般工业技术—材料科学与工程] TM912[电气工程—电力电子与电力传动]