Page 185 - Read Online

Cui et al. Energy Mater 2023;3:300023 Energy Materials
DOI: 10.20517/energymater.2022.90

Article Open Access

Ultra-long Zn V O (OH) ·2H O nanowires grown on
2
7
3
2
2
carbon cloth as cathode material for aqueous
zinc-ion batteries
2,*
3,*
1,#
2,#
2
4
1
Yu Cui , Yi Ding , Lingfan Guo , Chunli Guo , Yanzhen Liu , Yulin Bai , Gang Li , Kaiying Wang 1
1
Institute of Energy Innovation, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan
030024, Shanxi, China.
2
College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
3
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Science, Taiyuan 030001, Shanxi,
China.
4
College of Aeronautics and Astronautics, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
#
Authors contributed equally.
*Correspondence to: Prof. Chunli Guo, College of Materials Science and Engineering, Taiyuan University of Technology, No. 79
West Street Yingze, Taiyuan 030024, Shanxi, China. E-mail: guochunli@tyut.edu.cn; Dr. Yanzhen Liu, State Key Laboratory of
Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Science, 27 South Taoyuan Road, Taiyuan 030001, Shanxi,
China. E-mail: liuyz@sxicc.ac.cn
How to cite this article: Cui Y, Ding Y, Guo L, Guo C, Liu Y, Bai Y, Li G, Wang K. Ultra-long Zn V O (OH) ·2H O nanowires grown
7
2
3
2
2
on carbon cloth as cathode material for aqueous zinc-ion batteries. Energy Mater 2023;3:300023.
https://dx.doi.org/10.20517/energymater.2022.90
Received: 12 Dec 2022 First Decision: 16 Feb 2023 Revised: 10 Apr 2023 Accepted: 27 Apr 2023 Published: 12 May 2023
Academic Editors: Jiazhao Wang, Wei Tang Copy Editor: Fangling Lan Production Editor: Fangling Lan
Abstract
Enhancing the performance of the cathode materials is one of the key issues for aqueous zinc-ion batteries
(AZIBs). Layered vanadium-based compounds are considered to be a candidate cathode material for AZIBs owing
to their advantages of variable crystal structures and high-theoretical capacity. Nevertheless, the inherent low
conductivity of V-based compounds leads to their sluggish kinetics and serious capacity degradation of AZIBs.
Here, we proposed a strategy that combined morphology regulation with self-supporting electrodes to build an
efficient electron/ion transport network and prepared Zn (OH) V O ·2H O (ZVO) nanowires (ZVNW) on carbon
2
3
2
7
2
cloth (CC) by a hydrothermal method. As expected, the ZVNW-CC electrode showed excellent electrochemical
-1
-1
-1
performances of a high specific capacity of 361.8 mAh g (50 mA g ), high-rate capability (145.9 mAh g discharge
-1
-1
capacity at 1,000 mA g ), and long cycling life (96.7% capacity retention after 1,010 cycles at 1,000 mA g ). The
2+
Zn /H O co-intercalation mechanism for ZVNW-CC electrodes was demonstrated by ex-situ XPS and ex-situ TGA.
2
© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0
International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, sharing,
adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as
long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and
indicate if changes were made.

www.energymaterj.com