A biocompatible electrolyte enables highly reversible Zn anode for zinc ion battery
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Date
2023
Authors
Li, G.
Zhao, Z.
Zhang, S.
Sun, L.
Li, M.
Yuwono, J.A.
Mao, J.
Hao, J.
Vongsvivut, J.P.
Xing, L.
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Journal article
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Nature Communications, 2023; 14(1):6526-1-6526-14
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Guanjie Li, Zihan Zhao, Shilin Zhang, Liang Sun, Mingnan Li, Jodie A. Yuwono, Jianfeng Mao, Junnan Hao, Jitraporn (Pimm) Vongsvivut, Lidan Xing, Chun-Xia Zhao, Zaiping Guo
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Abstract
Progress towards the integration of technology into living organisms requires power devices that are biocompatible and mechanically flexible. Aqueous zinc ion batteries that use hydrogel biomaterials as electrolytes have emerged as a potential solution that operates within biological constraints; however, most of these batteries feature inferior electrochemical properties. Here, we propose a biocompatible hydrogel electrolyte by utilising hyaluronic acid, which contains ample hydrophilic functional groups. The gel-based electrolyte offers excellent anti-corrosion ability for zinc anodes and regulates zinc nucleation/growth. Also, the gel electrolyte provides high battery performance, including a 99.71% Coulombic efficiency, over 5500 hours of long-term stability, improved cycle life of 250 hours under a high zinc utilization rate of 80%, and high biocompatibility. Importantly, the Zn//LiMn2O4 pouch cell exhibits 82% capacity retention after 1000 cycles at 3 C. This work presents a promising gel chemistry that controls zinc behaviour, offering great potential in biocompatible energy-related applications and beyond.
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© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.