A Sustainable Dual Cross‑Linked Cellulose Hydrogel Electrolyte for High‑Performance Zinc‑Metal Batteries  

作　　者：Haodong Zhang Xiaotang Gan Yuyang Yan Jinping Zhou 

机构地区：[1]Hubei Engineering Center of Natural Polymers‑Based Medical Materials,Key Laboratory of Biomedical Polymers of Ministry of Education,College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,People’s Republic of China [2]Zhongnan Hospital of Wuhan University,Institute of Hepatobiliary Diseases of Wuhan University,Transplant Center of Wuhan University,Wuhan 430072,People’s Republic of China

出　　处：《Nano-Micro Letters》2024年第6期63-75,共13页纳微快报（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(52173106 and 22375154).

摘　　要：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 crosslinked 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.

关 键 词：CELLULOSE Dual cross-linked Aqueous rechargeable Zn-metal batteries Hydrogel electrolyte 

分 类 号：TM912[电气工程—电力电子与电力传动] O646.1[理学—物理化学]