Volume 41, Issue 14 pp. 1697-1704
Concise Report

N, S-Doped Carbon Dots as Additive for Suppression of Zinc Dendrites in Alkaline Electrolyte

Shan Cai

Shan Cai

College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083 China

These authors contributed equally to this work.

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Ge Chang

Ge Chang

College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083 China

These authors contributed equally to this work.

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Jiugang Hu

Corresponding Author

Jiugang Hu

College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083 China

E-mail: [email protected]; [email protected]Search for more papers by this author
Jiae Wu

Jiae Wu

College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083 China

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Yuqing Luo

Yuqing Luo

College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083 China

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Guoqiang Zou

Guoqiang Zou

College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083 China

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Hongshuai Hou

Corresponding Author

Hongshuai Hou

College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083 China

E-mail: [email protected]; [email protected]Search for more papers by this author
Xiaobo Ji

Xiaobo Ji

College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083 China

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First published: 15 February 2023
Citations: 5

Dedicated to the Special Issue of Carbon Dots Based Functional Materials.

Comprehensive Summary

The severe dendrite growth on zinc anode in alkaline electrolyte brings great challenge to the development of zinc-based batteries. It is a simple and effective strategy to inhibit zinc dendrite formation by introducing additives into the electrolyte. In this study, N, S-doped carbon dots (TU-CQDs) were synthesized and used as additives to regulate zinc deposition in a typical KOH electrolyte. The experimental and three-dimensional transient nucleation model disclosed that the special functional groups of carbon dots can change the electrode surface state and the coordination behaviors of zinc species in the electrolyte. Therefore, TU-CQDs can not only inhibit the hydrogen evolution reaction, but also achieve uniform zinc deposition. The in-situ synchrotron radiation X-ray imaging elucidated that TU-CQDs can effectively inhibit the dendrite growth and improve the reversibility of zinc plating/stripping process. This work provides a feasible route for regulating the reversibility of zinc metal anode in alkaline electrolyte.image

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