典型文献
Surface engineering based on in situ electro-polymerization to boost the initial Coulombic efficiency of hard carbon anode for sodium-ion battery
文献摘要：
Hard carbon(HC)is considered as a commer-cial candidate for anode materials of sodium-ion batteries due to its low cost and excellent capacity.However,the problem of low initial Coulombic efficiency is still urgently needed to be solved to promote the industrialization of HC.In this paper,2,2-dimethylvinyl boric acid(DEBA)is used to modify the surface of HC to prepare HC-DEBA mate-rials.During the cycling,the C=C bonds of DEBA molecules will be in situ electro-polymerized to form a polymer network,which can act as the passive protecting layer to inhibit irreversible decomposition of electrolyte,and induce a thinner solid electrolyte interface with lower interface impedance.Therefore,HC-DEBA has higher initial Coulombic efficiency and better cycling stability.In ester-based electrolyte,the initial Coulombic efficiency of the optimized HC-DEBA-3％increases from 65.2％to 77.2％.After 2000 cycles at 1 A·g-1,the capacity retention rate is 90.92％.Moreover,it can provide a high reversible capacity of 294.7 mAh.g-1 at 50 mA·g-1.This simple surface modification method is ingenious and versatile,which can be extended to other energy storage materials.
文献关键词：
中图分类号：
作者姓名：
Cheng-Xin Yu;Yu Li;Zhao-Hua Wang;Xin-Ran Wang;Ying Bai;Chuan Wu
作者机构：
Beijing Key Laboratory of Environmental Science and Engineering,School of Materials Science&Engineering,Beijing Institute of Technology,Beijing 100081,China;Yangtze Delta Region Academy of Beijing Institute of Technology,Jiaxing 314019,China
文献出处：
引用格式：
[1]Cheng-Xin Yu;Yu Li;Zhao-Hua Wang;Xin-Ran Wang;Ying Bai;Chuan Wu-.Surface engineering based on in situ electro-polymerization to boost the initial Coulombic efficiency of hard carbon anode for sodium-ion battery)[J].稀有金属（英文版）,2022(05):1616-1625
A类：
dimethylvinyl,DEBA
B类：
Surface,engineering,situ,polymerization,boost,initial,Coulombic,efficiency,hard,carbon,anode,sodium,battery,Hard,HC,considered,commer,cial,candidate,materials,batteries,due,its,cost,excellent,capacity,However,problem,still,urgently,needed,solved,promote,industrialization,In,this,paper,boric,acid,used,modify,surface,prepare,During,cycling,bonds,molecules,will,polymerized,form,network,which,act,passive,protecting,layer,inhibit,irreversible,decomposition,electrolyte,induce,thinner,solid,interface,lower,impedance,Therefore,has,higher,better,stability,ester,optimized,increases,from,After,cycles,retention,rate,Moreover,provide,mAh,This,simple,modification,method,ingenious,versatile,extended,other,energy,storage
AB值：
0.529453
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