Volume 9, Issue 4 2401096
Research Article

Zincophile Zn2+ Conductor Regulation by Ultrathin Nano MoO3 Coating for Dendrite-Free Zn Anode

Haisheng Lin

Haisheng Lin

College of Chemistry, Xiangtan University, Xiangtan, 411105 China

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Shujuan Cai

Shujuan Cai

College of Chemistry, Xiangtan University, Xiangtan, 411105 China

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Lanyan Li

Lanyan Li

School of Science, Hunan University of Technology and Business, Changsha, 410205 China

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Zhongyun Ma

Zhongyun Ma

College of Chemistry, Xiangtan University, Xiangtan, 411105 China

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Xianyou Wang

Xianyou Wang

College of Chemistry, Xiangtan University, Xiangtan, 411105 China

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Shuquan Liang

Shuquan Liang

School of Materials Science and Engineering, Central South University, Changsha, 410083 P. R. China

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Guozhao Fang

Corresponding Author

Guozhao Fang

School of Materials Science and Engineering, Central South University, Changsha, 410083 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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Manjun Xiao

Corresponding Author

Manjun Xiao

College of Chemistry, Xiangtan University, Xiangtan, 411105 China

E-mail: [email protected]; [email protected]; [email protected]

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Zhigao Luo

Corresponding Author

Zhigao Luo

College of Chemistry, Xiangtan University, Xiangtan, 411105 China

National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, National Base for International Science & Technology Cooperation, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan, 411105 China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 13 September 2024
Citations: 3

Abstract

Aqueous battery with nonflammable and instinctive safe properties has received great attention. However, issues related to Zn anode such as side reactions and rampant dendrite growth hinder the long-term circulation of AZMBs. Herein, an ultrathin(35 nm) MoO3 coating is deposited on the Zn anode by means of vacuum vapor deposition for the first time. Due to the peculiar layer structure of MoO3, insertion of Zn2+ in ZnxMoO3 acts as Zn2+ ion conductor, which regulates Zn2+ deposition in an ordered manner. Additionally, the MoO3 coating can also inhibit the hydrogen evolution and corrosion reactions at the interface. Therefore, both Zn//MoO3@Cu asymmetric battery and Zn symmetric battery cells manage to deliver satisfactory electrochemical performances. The symmetric cell assembled with MoO3@Zn shows a significant long cycle life of more than 1600 h at a current density of 2 mA cm−2. Meanwhile, the MoO3@Zn//Cu asymmetric cell exhibits an ultrahigh Zn deposition/stripping efficiency of 99.82% after a stable cycling of 650 h at 2 mA cm−2. This study proposes a concept of “zincophile Zn2+ conductor regulation” to dictate Zn electrodeposition and broadens novel design of vacuum evaporation for nano MoO3 modified Zn anodes.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

Research data are not shared.

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