典型文献
Enhanced performance of core-shell structured sodium manganese hexacyanoferrate achieved by self-limiting Na+-Cs+ ion exchange for sodium-ion batteries
文献摘要：
Sodium manganese hexacyanoferrate(NaMnHCF)is a promising cathode material for sodium-ion batteries(SIBs)due to its low cost and high energy density.The Jahn-Teller effect of Mn,however,leads to the poor structural stability of NaMnHCF,resulting in undesired electrochemical performance.Herein,we developed a novel coating strategy and obtained a core-shell structured NaMnHCF through facile Na+-Cs+ion exchange,which naturally produced a robust and insoluble Cs-rich surface layer(CsMnHCF)with several nanometers in thickness on pristine NaMnHCF.It is shown that the Cs-rich surface plays a positive role in the stability of the NaMnHCF structure by prohibiting the leakage of crystal water,stabilizing the solid-liquid interfaces,and solidify-ing crystal structure.The electrochemical performance of the core-shell NaMnHCF is dramatically improved with a discharge capacity of 76.3 mAh·g-1 after 1000 cycles at 1.0C and a reversible capacity of 87.0 mAh·g-1 at 10.0C,which is much superior to that of the pristine NaMnHCF with only 26.6 mAh·g-1 after 400 cycles and 31 mAh·g-1 at 10.0C.This work reports a new method for the synthesis of core-shell NaMnHCF and provides a novel perspective for the development of advanced NaMnHCF cathode for SIBs.
文献关键词：
中图分类号：
作者姓名：
Yan-Dong Guo;Ji-Cheng Jiang;Jian Xie;Xin Wang;Jing-Ze Li;Dong-Huang Wang;Ai-Jun Zhou
作者机构：
School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu 611731,China;Yangtze Delta Region Institute(Huzhou),University of Electronic Science and Technology of China,Huzhou 313001,China;State Key Laboratory of Silicon Materials,School of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,China
文献出处：
引用格式：
[1]Yan-Dong Guo;Ji-Cheng Jiang;Jian Xie;Xin Wang;Jing-Ze Li;Dong-Huang Wang;Ai-Jun Zhou-.Enhanced performance of core-shell structured sodium manganese hexacyanoferrate achieved by self-limiting Na+-Cs+ ion exchange for sodium-ion batteries)[J].稀有金属（英文版）,2022(11):3740-3751
A类：
NaMnHCF,Cs+ion,CsMnHCF,prohibiting
B类：
Enhanced,performance,core,shell,structured,sodium,manganese,hexacyanoferrate,achieved,by,self,limiting,Na+,exchange,batteries,Sodium,promising,cathode,material,SIBs,due,its,low,cost,high,energy,density,Jahn,Teller,effect,however,leads,poor,structural,stability,resulting,undesired,electrochemical,Herein,developed,novel,coating,strategy,obtained,through,facile,which,naturally,produced,robust,insoluble,rich,surface,layer,several,nanometers,thickness,pristine,It,shown,that,plays,positive,role,leakage,crystal,water,stabilizing,liquid,interfaces,solidify,dramatically,improved,discharge,capacity,mAh,after,cycles,0C,reversible,much,superior,only,This,work,reports,new,method,synthesis,provides,perspective,development,advanced
AB值：
0.4839
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