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Nano Research

Article Title

Hydrogenated vanadium oxides as an advanced anode material in lithium ion batteries

Authors

Yufei Zhang, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic InnovationCenter for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing 210009, China School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
Huanwen Wang, School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
Jun Yang, Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic InnovationCenter for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing 210009, China School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
Haosen Fan, School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
Yu Zhang, School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
Zhengfei Dai, School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
Yun Zheng, School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
Wei Huang, Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic InnovationCenter for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing 210009, China
Xiaochen Dong, Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic InnovationCenter for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing 210009, China
Qingyu Yan, School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore

Keywords

hydrogenation, vanadium oxides, 3D structure, rechargeable lithium ion battery (LIB) anode

Abstract

ABSTRACT Current research on vanadium oxides in lithium ion batteries (LIBs) considers them as cathode materials, whereas they are rarely studied for use as anodes in LIBs because of their low electrical conductivity and rapid capacity fading. In this work, hydrogenated vanadium oxide nanoneedles were prepared and incorporated into freeze-dried graphene foam. The hydrogenated vanadium oxides show greatly improved charge-transfer kinetics, which lead to excellent electrochemical properties. When tested as anode materials (0.005–3.0 V vs. Li/Li+) in LIBs, the sample activated at 600 °C exhibits high specific capacity (~941 mA·h·g−1 at 100 mAg−1) and high-rate capability (~504 mA·h·g−1 at 5 A·g−1), as well as excellent cycling performance (~285 mA·h·g−1 in the 1,000th cycle at 5 A·g−1). These results demonstrate the promising application of vanadium oxides as anodes in LIBs.

Graphical Abstract

Publisher

Tsinghua University Press

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