Interface coordination stabilizing reversible redox of zinc for high-performance zinc-iodine batteries

Chen, Song, Chen, Qianwu, Ma, Jizhen, Wang, Jianjun, Hui, Kwan San ORCID: and Zhang, Jintao (2022) Interface coordination stabilizing reversible redox of zinc for high-performance zinc-iodine batteries. Small, 18 (22). ISSN 1613-6810

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Aqueous Zn batteries (AZBs) have attracted extensive attention due to good safety, cost-effectiveness, and environmental benignity. However, the sluggish kinetics of divalent zinc ion and the growth of Zn dendrites severely deteriorate the cycling stability and specific capacity. The authors demonstrate modulation of the interfacial redox process of zinc via the dynamic coordination chemistry of phytic acid with zinc ions. The experimental results and theoretical calculation reveal that the in-situ formation of such inorganic–organic films as a dynamic solid-electrolyte interlayer is efficient to buffer the zinc ion transfer via the energy favorable coordinated hopping mechanism for the reversible zinc redox reactions. Especially, along the interfacial coating layer with porous channel structure is able to regulate the solvation structure of zinc ions along the dynamic coordination of the phytic acid skeleton, efficiently inhibiting the surface corrosion of zinc and dendrite growth. Therefore, the resultant Zn anode achieves low voltage hysteresis and long cycle life at rigorous charge and discharge circulation for fabricating highly robust rechargeable batteries. Such an advanced strategy for modulating ion transport demonstrates a highly promising approach to addressing the basic challenges for zinc-based rechargeable batteries, which can potentially be extended to other aqueous batteries.

Item Type: Article
Additional Information: Funding Information: This work was financially supported by the National Natural Science Foundation of China (22175108), the Natural Scientific Foundation (ZR2020JQ09) and Taishan Scholars Program (No. tsqn20161004) of Shandong Province, Project for Scientific Research Innovation Team of Young Scholar in Colleges, Universities of Shandong Province (2019KJC025). The authors also acknowledge the assistance of the Analytical Center for Structural Constituent and Physical Property of Core Facilities Sharing Platform, Shandong University and the National Synchrotron Radiation Laboratory (NSRL) at the University of Science and Technology of China.
Uncontrolled Keywords: advanced zn anodes,coordination chemistry,desolvation energy barrier,electrode-electrolyte interfaces,zn-i batteries,biotechnology,chemistry(all),biomaterials,materials science(all),engineering (miscellaneous) ,/dk/atira/pure/subjectarea/asjc/1300/1305
Faculty \ School: Faculty of Science > School of Engineering
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Depositing User: LivePure Connector
Date Deposited: 25 Apr 2024 10:31
Last Modified: 25 Apr 2024 10:31
DOI: 10.1002/smll.202200168


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