Spatially-controlled porous nanoflake arrays derived from MOFs:An efficiently long-life oxygen electrode

查看全文 作　　者：Hao [1,2]Gong;Tao [1]Wang;Hairong [1]Xue;Xueyi [3]Lu;Wei [1]Xia;Li [1]Song;Songtao [4]Zhang;Jianping HeRenzhi [1]Ma

机构地区：[1]College of Materials Science and Technology^Jiangsu Key Laboratory of Materials and Technology for Energy Conversion,Nanjing University(rf Aeronautics and Astronautics,Nanjing 210016,China;[2]International Center for Materials Nanoarchitectonics(WPI-MANA),National Institute for Materials Science(NIMS),1-1 Natniki,Tsukuba,Ibaraki 305-0044,Japan;[3]School of Chemistry and Chemical Engineering,South China University of Technology,Wushan Road 381,Guangzhou 510641,China;[4]Testing Center,Yangzhou University,Yangzhou 225009,China

出　　处：《Nano Research》索引2019年第12卷第10期,共7页

基　　金：The authors thank for the financial support from the National Natural Science Foundation of China(Nos.51602153 and 11575084);the Natural Science Foundation of Jiangsu Province(No.BK20160795);Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX18_0276);Zhejiang Provincial Natural Science Foundation of China under(No.LQ18B010005);the Fundamental Research Funds for the Central Universities(No.NE2018104);a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD).G.H.also thanks the China Scholarship Council for financial support. 摘　　要：The urge nt expectati on of the n ext-ge neratio n en ergy storage devices for electric vehicles has drive n researchers'atte ntion to the lithium-oxyge n(Li-O2)batteries due to the satisfied specific energy density.Herein,spatially-controlled CO3O4 nanoflake arrays with three-dimensional networked morphology are adopted as flexible and self-sta nding oxyge n cathodes in L1-O2 batteries.The spin el-phase CO3O4 nano flakes were con verted from two dimensi on metal-orga nic frameworks with abundant available cha nnels and large specific surface area.The open-structure nano flake arrays possess sufficie nt Li2O2/cathode contact interface,great bifunctional catalytic performa nee and adequate Li2O2 accommodation,leading to the enhanced electrochemical performance of the L1-O2 batteries.As expected,the binder-free porous CO3O4/CT cathode delivers a high capacity of 6,509 mAh·g^-1(200 mA·g^-1)and enhanced stability over 100 cycles(limited by 1,000 mAh·g^-1).In additi on,pouch-type Li-O2 batteries were successfully desig ned and cycled with CO3O4/CT cathode as oxyge n electrodes,dem on strating its potential application for flexible electronics and wearable energy storage devices. 关键词：two-dimension METAL-ORGANIC frameworks MESOPOROUS CO3O4 flexible OXYGEN electrode lithium-oxygen batteries

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Spatially-controlled porous nanoflake arrays derived from MOFs:An efficiently long-life oxygen electrode

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