Volume 63, Issue 51 e202412006
Research Article

Simultaneous Inhibition of Vanadium Dissolution and Zinc Dendrites by Mineral-Derived Solid-State Electrolyte for High-Performance Zinc Metal Batteries

Chuancong Zhou

Chuancong Zhou

School of Marine Science and Engineering, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 China

These authors contributed equally.

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Zeyou Wang

Zeyou Wang

China State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023 China

These authors contributed equally.

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Qing Nan

Qing Nan

School of Marine Science and Engineering, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 China

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Huan Wen

Huan Wen

Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004 China

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Zhenming Xu

Zhenming Xu

College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016 China

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Jie Zhang

Jie Zhang

School of Marine Science and Engineering, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 China

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Zejun Zhao

Zejun Zhao

School of Marine Science and Engineering, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 China

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Jing Li

Jing Li

School of Marine Science and Engineering, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 China

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Zhenyue Xing

Zhenyue Xing

School of Marine Science and Engineering, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 China

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Peng Rao

Peng Rao

School of Marine Science and Engineering, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 China

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Zhenye Kang

Zhenye Kang

School of Marine Science and Engineering, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 China

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Xiaodong Shi

Corresponding Author

Xiaodong Shi

School of Marine Science and Engineering, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 China

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Xinlong Tian

Corresponding Author

Xinlong Tian

School of Marine Science and Engineering, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 China

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First published: 28 August 2024
Citations: 18

Graphical Abstract

Kaolin is demonstrated as an effective material to prepare Zn-based solid electrolyte (KL-Zn), which simultaneously eliminates the interfacial side reactions of zinc anode and inhibits the vanadium dissolution of NH4V4O10 cathode, endowing high reversible capacity and superior cyclic stability for Zn//NH4V4O10 batteries.

Abstract

Designing solid electrolyte is deemed as an effective approach to suppress the side reaction of zinc anode and active material dissolution of cathodes in liquid electrolytes for zinc metal batteries (ZMBs). Herein, kaolin is comprehensively investigated as raw material to prepare solid electrolyte (KL−Zn) for ZMBs. As demonstrated, KL−Zn electrolyte is an excellent electronic insulator and zinc ionic conductor, which presents wide voltage window of 2.73 V, high ionic conductivity of 5.08 mS cm−1, and high Zn2+ transference number of 0.79. For the Zn//Zn cells, superior cyclic stability lasting for 2200 h can be achieved at 0.2 mA cm−2. For the Zn//NH4V4O10 batteries, stable capacity of 245.8 mAh g−1 can be maintained at 0.2 A g−1 after 200 cycles along with high retention ratio of 81 %, manifesting KL−Zn electrolyte contributes to stabilize the crystal structure of NH4V4O10 cathode. These satisfying performances can be attributed to the enlarged interlayer spacing, zinc (de)solvation-free mechanism and fast diffusion kinetics of KL−Zn electrolyte, availably guaranteeing uniform zinc deposition for zinc anode and reversible zinc (de)intercalation for NH4V4O10 cathode. Additionally, this work also verifies the application possibility of KL−Zn electrolyte for Zn//MnO2 batteries and Zn//I2 batteries, suggesting the universality of mineral-based solid electrolyte.

Conflict of Interests

The authors declare no competing interests.

Data Availability Statement

The data that support the findings of this study are available within the manuscript and the corresponding Supporting Information file.

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