材料科学
化学工程
电解质
膜
溶解
电池(电)
水溶液
纤维素
电化学
储能
多孔性
电极
复合材料
有机化学
化学
物理化学
功率(物理)
工程类
物理
量子力学
生物化学
作者
Zhuoyuan Zheng,Shiye Yan,Yifan Zhang,Xingpeng Zhang,Jie Zhou,Jilei Ye,Yusong Zhu
标识
DOI:10.1016/j.cej.2023.146314
摘要
Aqueous zinc-ion batteries (ZIBs) are regarded as promising candidates for next-generation energy storage systems due to their high capacity, inherent safety, and cost-effectiveness. However, the practical application of ZIBs is currently hindered by the insufficient stability of the zinc metal electrode and the spontaneous growth of dendrites during operation. Furthermore, the use of petroleum-based materials in batteries raises environmental concerns that must be addressed. This study proposes a natural cellulose-based biodegradable hydrogel membrane with an ultrathin and non-porous structure. Paper scraps are utilized as raw materials, and DMAc/LiCl serves as the dissolution system. The quasi-solid cellulose membrane demonstrates a high liquid absorption ability, favorable mechanical properties (39.5 MPa), excellent ion conductivity (0.643 mS cm−1), a wide electrochemical window (1.6 V), and a low activation energy for Zn2+ conduction (3.195 kJ mol−1). The Zn//Zn symmetric battery, assembled with the cellulose membrane, exhibits prolonged reversible Zn2+ stripping/plating behavior (up to 1800 h at 1 mA cm−2), highlighting its superior capability to suppress dendrite formation. Additionally, the corresponding Zn//V2O5 battery shows enhanced electrochemical stability, long cycle life, and high capacity. This research provides valuable insights for the development of polymer electrolytes that enable the realization of safe, lightweight, and environmentally friendly aqueous ZIBs.
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