纤维素
锌
电解质
聚苯胺
金属
多孔性
材料科学
化学工程
冶金
化学
复合材料
工程类
电极
聚合
物理化学
聚合物
作者
Haodong Zhang,Xiaotang Gan,Yuyang Yan,Jinping Zhou
标识
DOI:10.1007/s40820-024-01329-0
摘要
Abstract Aqueous rechargeable Zn-metal batteries (ARZBs) are considered one of the most promising candidates for grid-scale energy storage. However, their widespread commercial application is largely plagued by three major challenges: The uncontrollable Zn dendrites, notorious parasitic side reactions, and sluggish Zn 2+ ion transfer. To address these issues, we design a sustainable dual cross-linked cellulose hydrogel electrolyte, which has excellent mechanical strength to inhibit dendrite formation, high Zn 2+ ions binding capacity to suppress side reaction, and abundant porous structure to facilitate Zn 2+ ions migration. Consequently, the Zn||Zn cell with the hydrogel electrolyte can cycle stably for more than 400 h under a high current density of 10 mA cm −2 . Moreover, the hydrogel electrolyte also enables the Zn||polyaniline cell to achieve high-rate and long-term cycling performance (> 2000 cycles at 2000 mA g −1 ). Remarkably, the hydrogel electrolyte is easily accessible and biodegradable, making the ARZBs attractive in terms of scalability and sustainability.
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