A chemically bonded CoNiO2 nanoparticles/MXene composite as anode for sodium-ion batteries

•The CoNiO2/Ti3C2Tx composite was synthesized by a simple method.•The composite is used as anode of sodium ion batteries for the first time.•The CoNiO2/Ti3C2Tx electrode displays good electrochemical performance. CoNiO2/MXene composite is successfully fabricated by a facile hydrothermal method combi...

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Bibliographic Details
Published in:Materials letters 2018-11, Vol.230, p.173-176
Main Authors: Tao, Mengli, Zhang, Youquan, Zhan, Renming, Guo, Bingshu, Xu, Qiuju, Xu, Maowen
Format: Article
Language:English
Subjects:
CoNiO2
Multilayer structure
MXene
Nanoparticles
Sodium-ion batteries
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Summary:•The CoNiO2/Ti3C2Tx composite was synthesized by a simple method.•The composite is used as anode of sodium ion batteries for the first time.•The CoNiO2/Ti3C2Tx electrode displays good electrochemical performance. CoNiO2/MXene composite is successfully fabricated by a facile hydrothermal method combined with an annealing treatment. The CoNiO2 nanoparticles anchor on MXene evenly form a rough multilayer structure, which can promote Na+ transmission and relieve volume expansion during charge/discharge cycling. The CoNiO2/MXene multilayer structure composite as anode material for sodium-ion batteries delivers a high discharge capacity of 223 mA h g−1 at 100 mA g−1 and displays outstanding rate performance of 188 mA h g−1 at 300 mA g−1.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2018.07.110