{"title":"Carboxylic Acid-Functionalized Cellulose Hydrogel Electrolyte for Dual-Interface Stabilization in Aqueous Zinc-Organic Batteries","authors":"Haodong Zhang, Xiaotang Gan, Yingjie Gao, Hao Wu, Zhiping Song, Jinping Zhou","doi":"10.1002/adma.202411997","DOIUrl":null,"url":null,"abstract":"<p>Aqueous zinc batteries (AZBs) are considered one of the most promising candidates for grid-scale energy storage. However, achieving a stable electrode–electrolyte interface remains a challenge for developing high-performance AZBs. Herein, taking the Zn||phenazine (PNZ) system as a prototype, where the proton uptake/removal mechanism dominates in the cathode, a carboxylic acid-functionalized cellulose hydrogel electrolyte is designed to simultaneously solve the issues at both the anode and cathode interfaces. Specifically, the hydrogel electrolyte can not only regulate Zn<sup>2+</sup> ions at the Zn anode side but also supply H<sup>+</sup> ions at the PNZ cathode side to avoid the unfavored deposition of zinc sulfate hydroxides. Benefiting from the unique one-gel-for-two-electrodes strategy, the dendrite-free and side reaction-suppressed aqueous Zn||PNZ cells are developed with a high specific capacity (311 mAh g<sup>−1</sup>, 99% utilization of the theoretical capacity) and a long cycle life (over 1500 cycles within 2 months). This study proposes a facile and low-cost electrolyte strategy for stabilizing AZBs.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"37 1","pages":""},"PeriodicalIF":27.4000,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adma.202411997","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Aqueous zinc batteries (AZBs) are considered one of the most promising candidates for grid-scale energy storage. However, achieving a stable electrode–electrolyte interface remains a challenge for developing high-performance AZBs. Herein, taking the Zn||phenazine (PNZ) system as a prototype, where the proton uptake/removal mechanism dominates in the cathode, a carboxylic acid-functionalized cellulose hydrogel electrolyte is designed to simultaneously solve the issues at both the anode and cathode interfaces. Specifically, the hydrogel electrolyte can not only regulate Zn2+ ions at the Zn anode side but also supply H+ ions at the PNZ cathode side to avoid the unfavored deposition of zinc sulfate hydroxides. Benefiting from the unique one-gel-for-two-electrodes strategy, the dendrite-free and side reaction-suppressed aqueous Zn||PNZ cells are developed with a high specific capacity (311 mAh g−1, 99% utilization of the theoretical capacity) and a long cycle life (over 1500 cycles within 2 months). This study proposes a facile and low-cost electrolyte strategy for stabilizing AZBs.
期刊介绍:
Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.