电解质
锌
聚天冬氨酸
阳极
化学
电偶阳极
水溶液
电化学
电池(电)
氧化还原
无机化学
硝酸锌
材料科学
化学工程
电极
有机化学
原材料
功率(物理)
物理
物理化学
阴极保护
量子力学
工程类
作者
Hongyu Lu,Jisong Hu,Xiujuan Wei,Kaiqi Zhang,Xiao Xiao,Jing-Xin Zhao,Qiang Hu,Jingkun Yu,Guangmin Zhou,Bingang Xu
标识
DOI:10.1038/s41467-023-40178-0
摘要
Abstract The operation of traditional aqueous-electrolyte zinc-ion batteries is adversely affected by the uncontrollable growth of zinc dendrites and the occurrence of side reactions. These problems can be avoided by the development of functional hydrogel electrolytes as replacements for aqueous electrolytes. However, the mechanism by which most hydrogel electrolytes inhibit the growth of zinc dendrites on a zinc anode has not been investigated in detail, and there is a lack of a large-scale recovery method for mainstream hydrogel electrolytes. In this paper, we describe the development of a recyclable and biodegradable hydrogel electrolyte based on natural biomaterials, namely chitosan and polyaspartic acid. The distinctive adsorptivity and inducibility of chitosan and polyaspartic acid in the hydrogel electrolyte triggers a double coupling network and an associated synergistic inhibition mechanism, thereby effectively inhibiting the side reactions on the zinc anode. In addition, this hydrogel electrolyte played a crucial role in an aqueous acid-based Zinc/MnO 2 battery, by maintaining its interior two-electron redox reaction and inhibiting the formation of zinc dendrites. Furthermore, the sustainable biomass-based hydrogel electrolyte is biodegradable, and could be recovered from the Zinc/MnO 2 battery for subsequent recycling.
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