Volume 39, Issue 7 pp. 1885-1890
Concise Report

Ammonium Ion and Structural Water Co-Assisted Zn2+ Intercalation/De-Intercalation in NH4V4O10∙0.28H2O

Ting Zhu

Ting Zhu

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei, 430070 China

These authors contributed equally to this work.

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Bo Mai

Bo Mai

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei, 430070 China

These authors contributed equally to this work.

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Ping Hu

Ping Hu

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei, 430070 China

Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan, Guangdong, 528200 China

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Ziang Liu

Ziang Liu

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei, 430070 China

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Congcong Cai

Congcong Cai

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei, 430070 China

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Xuanpeng Wang

Xuanpeng Wang

Department of Physical Science & Technology, School of Science, Wuhan University of Technology, Wuhan, Hubei, 430070 China

Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan, Guangdong, 528200 China

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Liang Zhou

Corresponding Author

Liang Zhou

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei, 430070 China

Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan, Guangdong, 528200 China

E-mail: [email protected]Search for more papers by this author
First published: 02 March 2021
Citations: 16

Dedicated to the Special Issue of Nanostructured Materials for Electrochemical Energy Conversion and Storage.

Main observation and conclusion

The cathode material plays a crucial role in the performances of aqueous zinc-ion batteries (ZIBs). Herein, we report an ammonium vanadate (NH4V4O10∙0.28H2O, NHVO) aqueous ZIB cathode material. The obtained NHVO microflowers manifest high discharge capacity (410 mA·h∙g–1 at 0.2 A∙g–1), long-term durability (76% capacity retention over 500 cycles), as well as ideal rate performance (112 mA·h∙g–1 at 10 A∙g–1). The impressive electrochemical performance can be attributed to the ammonium ion and structural water co-assisted Zn2+ intercalation/de-intercalation, which has been demonstrated by various ex-situ and in-situ characterizations. The superior electrochemical performance makes the NHVO microflower an ideal candidate cathode material for aqueous ZIBs.image

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