• Nano-Micro Letters
  • Vol. 16, Issue 1, 075 (2024)
Xianfu Zhang1, Long Zhang1,*, Xinyuan Jia1, Wen Song1, and Yongchang Liu1,2,**
Author Affiliations
  • 1School of Materials Science and Engineering, University of Science and Technology Beijing, 30 College Road, Beijing 100083, People’s Republic of China
  • 2Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, People’s Republic of China
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    DOI: 10.1007/s40820-023-01304-1 Cite this Article
    Xianfu Zhang, Long Zhang, Xinyuan Jia, Wen Song, Yongchang Liu. Design Strategies for Aqueous Zinc Metal Batteries with High Zinc Utilization: From Metal Anodes to Anode-Free Structures[J]. Nano-Micro Letters, 2024, 16(1): 075 Copy Citation Text show less

    Abstract

    Aqueous zinc metal batteries (AZMBs) are promising candidates for next-generation energy storage due to the excellent safety, environmental friendliness, natural abundance, high theoretical specific capacity, and low redox potential of zinc (Zn) metal. However, several issues such as dendrite formation, hydrogen evolution, corrosion, and passivation of Zn metal anodes cause irreversible loss of the active materials. To solve these issues, researchers often use large amounts of excess Zn to ensure a continuous supply of active materials for Zn anodes. This leads to the ultralow utilization of Zn anodes and squanders the high energy density of AZMBs. Herein, the design strategies for AZMBs with high Zn utilization are discussed in depth, from utilizing thinner Zn foils to constructing anode-free structures with theoretical Zn utilization of 100%, which provides comprehensive guidelines for further research. Representative methods for calculating the depth of discharge of Zn anodes with different structures are first summarized. The reasonable modification strategies of Zn foil anodes, current collectors with pre-deposited Zn, and anode-free aqueous Zn metal batteries (AF-AZMBs) to improve Zn utilization are then detailed. In particular, the working mechanism of AF-AZMBs is systematically introduced. Finally, the challenges and perspectives for constructing high-utilization Zn anodes are presented.
    Xianfu Zhang, Long Zhang, Xinyuan Jia, Wen Song, Yongchang Liu. Design Strategies for Aqueous Zinc Metal Batteries with High Zinc Utilization: From Metal Anodes to Anode-Free Structures[J]. Nano-Micro Letters, 2024, 16(1): 075
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