Necklace-like carbon nanofibers encapsulating MoO_(2) nanospheres with Mo-C bonding for stable lithium-ion storage

查看全文 作　　者：Jing [1]Chen;Xuan-Le [1]Chen;Rou [2]Lu;Yong [1]Li;An-Qiang [2]Pan

机构地区：[1]School of Physics and Materials,Nanchang University,Nanchang 330031,China;[2]State Key Laboratory of Powder Metallurgy,School of Materials Science and Engineering,Central South University,Changsha 410083,China

出　　处：《Rare Metals》索引2023年第42卷第8期,共9页

基　　金：financially supported by the National Natural Science Foundation of China(No.51874362);the Scientific Research Project of Hunan Provincial Department of Education(No.21B0815);Jiangxi Provincial Natural Science Foundation No.20212BAB214053。 摘　　要：Molybdenum dioxide has aroused a wide concern as anode material for lithium-ion batteries(LIBs)due to its high theoretical capacity and high density.However,it still faces the problems of large volume changes and low electronic conductivities,which limits its practical application.Herein,necklace-like N-doped carbon nanofibers encapsulating MoO_(2)nanospheres(MoO_(2)@NCNFs)with Mo-C bonding have been designed to address these issues.The rational design carbon coating structure can not only enhance the electron transfer,but also markedly strengthen structural stability.As expected,the as-prepared electrode showed superior lithium storage capacity,including a high specific capacity of 1120 mAh·g^(-1)at 0.1 A·g^(-1),and good rate performance of 502 mAh·g^(-1)at 4.0 A·g^(-1)and a prolonged cycling stability of 490 mAh·g^(-1)capacity retention over 3000 cycles at 4.0 A·g^(-1). 关键词：lithium BONDING CYCLING

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Necklace-like carbon nanofibers encapsulating MoO_(2) nanospheres with Mo-C bonding for stable lithium-ion storage

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