Atomic layer deposition of core-shell structured V_(2)O_(5)@CNT sponge as cathode for potassium ion batteries

查看全文 作　　者：Fangliang [1]Ye;Dongwei [2]Lu;Xuchun [2]Gui;Tengrui [1]Wang;Xiaoying [3]Zhuang;Wei [1]Luo;Yunhui [1]Huang

机构地区：[1]Institute of New Energy for Vehicles,School of Materials Science and Engineering,Tongji University,Shanghai,201804,China;[2]State Key Laboratory of Optoelectronic Materials and Technologies,School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou,510275,China;[3]Department of Geotechnical Engineering,College of Civil Engineering,Tongji University,Shanghai,200092,China

出　　处：《Journal of Materiomics》索引2019年第5卷第3期,共6页

基　　金：supported by the Fundamental Research Funds for the Central Universities. 摘　　要：Potassium-ion batteries(KIBs)represent one of the most promising alternatives to lithium-ion batteries(LIBs)considering the potential low cost and abundant potassium resource.In this work,we demonstrate a core-shell structured sponge cathode for KIBs,where amorphous V_(2)O_(5) uniformly coats on carbon nanotube(CNT)sponge via atomic layer deposition(ALD).The V_(2)O_(5)@CNT sponge shows several advantages as cathode:(1)the three-dimensional(3D)conductive network of CNT sponge offers a fast electron transport pathway,(2)the porous nature and high surface area of CNT sponge enables enough access for electrolyte to V_(2)O_(5),(3)the amorphous structure of V_(2)O_(5) offers a fast kinetics upon K-ion insertion/deinsertion.The V_(2)O_(5)@CNT sponge cathode delivers a high capacity of 206mA h/g and moderate cycling and rate performance in common carbonate-based electrolyte system. 关键词：Potassium ion batteries Atomic layer deposition Amorphous vanadium oxide Carbon nanotube sponge

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Atomic layer deposition of core-shell structured V_(2)O_(5)@CNT sponge as cathode for potassium ion batteries

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