Construction of zinc metal-Tin sulfide polarized interface for stable Zn metal batteries

Yingzhu Hu; Chunyan Fu; Simin Chai; Qiong He; Yijiang Wang; Mingyang Feng; Yifang Zhang; Anqiang Pan

Advanced Powder Materials (Apr 2023)

Construction of zinc metal-Tin sulfide polarized interface for stable Zn metal batteries

Yingzhu Hu,
Chunyan Fu,
Simin Chai,
Qiong He,
Yijiang Wang,
Mingyang Feng,
Yifang Zhang,
Anqiang Pan

Affiliations

Yingzhu Hu: Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, School of Materials Science and Engineering, Central South University, Changsha 410083, China
Chunyan Fu: Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, School of Materials Science and Engineering, Central South University, Changsha 410083, China
Simin Chai: Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, School of Materials Science and Engineering, Central South University, Changsha 410083, China
Qiong He: Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, School of Materials Science and Engineering, Central South University, Changsha 410083, China
Yijiang Wang: Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, School of Materials Science and Engineering, Central South University, Changsha 410083, China
Mingyang Feng: Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, School of Materials Science and Engineering, Central South University, Changsha 410083, China
Yifang Zhang: State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China; Corresponding author.
Anqiang Pan: Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, School of Materials Science and Engineering, Central South University, Changsha 410083, China; Corresponding author.

Journal volume & issue: Vol. 2, no. 2
p. 100093

Abstract

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Aqueous Zn metal batteries have become competitive electrochemical energy storage systems owing to their material abundance, low cost, high capacity, and nontoxicity. Nevertheless, the notorious Zn dendrites and poor anode reversibility caused by the insulating by-products and “dead Zn” are still formidable challenges for their practical application. Herein, an SnS-based layer coated on the Zn anode is reported to tackle these problems. The semiconducting SnS with a higher work function can drive the electrons from the Zn anode, which constructs a polarized interface between the SnS layer and Zn. The semiconducting importance of the coating layer is verified through theoretical simulations, which can migrate the polarization layer from the electrode surface to a well-protected spot beneath the coating layer. This polarization interface is effective in homogenizing the Zn2+ flux and repelling the anions from electrochemical corrosion. Compared with the bare Zn, the SnS-coated Zn anode exhibits a notable 14.7-fold enhancement in plating/stripping lifetime (over 3000 h), high reversibility (with CE of 99.74%), and superior stability in full cells when paired with vanadium- and manganese-based cathodes.

Published in Advanced Powder Materials

ISSN: 2772-834X (Online)
Publisher: KeAi Communications Co. Ltd.
Country of publisher: China
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.keaipublishing.com/en/journals/advanced-powder-materials/

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