典型文献
Cu-substitution P2-Na0.66Mn1-xCuxO2 sodium-ion cathode with enhanced interlayer stability
文献摘要：
P2-type Mn-based layered oxides are viewed as promising cathode materials for sodium ion battery by virtue of their high theoretical capacity.Considering that pure Na2/3MnO2 suffers from poor cycling per-formances,Cu-substitution strategy is proposed to effectively alleviate this issue.However,the structural evolution mechanism of the Cu-containing samples still remains unclear.Herein,we propose that Cu-Substitution P2-type Na0.66Mn1-xCuxO2 with enlarged lattice parameters are conducive to improving the interlayer structure stability through mitigating TMO2 slabs distortion.Proved by synchrotron XAS spectra and ex/in situ XRD,the expansion/contraction of MnO6 octahedron is dramatically reduced with the increased Cu content,showing the facilitated Na ion diffusion.Furthermore,when the ratio of Cu to Mn reaches 1∶4,the phase transition from P2 to P'2 type at the end of discharge can be suppressed,result-ing in the improved interlayer skeleton stability.The Cu-containing samples with stable interlayer struc-ture exhibit high capacity retention and outstanding rate performances(a capacity of 79.9 mAh g-1 at 5 C).This Cu-substitution strategy provides a promising approach to designing highly stable cathodes.
文献关键词：
中图分类号：
作者姓名：
Huanqing Liu;Xu Gao;Jun Chen;Jinqiang Gao;Haoji Wang;Yu Mei;Huan Liu;Wentao Deng;Guoqiang Zou;Hongshuai Hou;Xiaobo Ji
作者机构：
State Key Laboratory of Powder Metallurgy,College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,Hunan,China;School of Materials Science and Engineering,Hunan Provincial Key Lab of Advanced Materials for New Energy Storage and Conversion,Hunan University of Science and Technology,Xiangtan 411201,Hunan,China
文献出处：
引用格式：
[1]Huanqing Liu;Xu Gao;Jun Chen;Jinqiang Gao;Haoji Wang;Yu Mei;Huan Liu;Wentao Deng;Guoqiang Zou;Hongshuai Hou;Xiaobo Ji-.Cu-substitution P2-Na0.66Mn1-xCuxO2 sodium-ion cathode with enhanced interlayer stability)[J].能源化学,2022(12):478-485
A类：
66Mn1,xCuxO2,3MnO2,TMO2,Proved,MnO6
B类：
substitution,P2,Na0,sodium,enhanced,interlayer,stability,type,layered,oxides,are,viewed,promising,materials,battery,by,virtue,their,theoretical,capacity,Considering,that,pure,Na2,suffers,from,poor,cycling,strategy,proposed,effectively,alleviate,this,issue,However,structural,evolution,mechanism,containing,samples,still,remains,unclear,Herein,Substitution,enlarged,lattice,parameters,conducive,improving,structure,through,mitigating,slabs,distortion,synchrotron,XAS,spectra,situ,expansion,contraction,octahedron,dramatically,reduced,increased,content,showing,facilitated,diffusion,Furthermore,when,ratio,reaches,phase,transition,end,discharge,can,be,suppressed,result,improved,skeleton,stable,exhibit,retention,outstanding,performances,mAh,This,provides,approach,designing,highly,cathodes
AB值：
0.541946
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
