Zhang Hong, Xu Dongxiao, Wang Lipeng, Ye Zhuolin, Chen Bin, Pei Liyuan, Wang Zengyao, Cao Ziyi, Shen Jianfeng, Ye Mingxin
Institute of Special Materials and Technology, Fudan University, Shanghai, 200433, China.
Department of Chemistry, Fudan University, Shanghai, 200433, China.
Small. 2021 Jun;17(25):e2100902. doi: 10.1002/smll.202100902. Epub 2021 May 24.
Aqueous zinc-ion batteries (AZIBs) are regarded as one of the most promising alternative technology to lithium-ion batteries on account of their low flammability and cost-benefits. Among various cathode materials in AZIBs, environment-friendly and sustainable organic electrode materials stand out owing to their structural diversity and tunability. However, their limited rate capability and cycle stability remain the obstacles to their further application in AZIBs. Herein, a mixed cathode design strategy including polymerization and carbon materials hybridization is adopted to assemble high-rate and durable AZIBs. Specifically, a polymer/graphene composite cathode with active carbonyls and secondary amine moieties is prepared to construct high-performance aqueous Zn-organic batteries. Furthermore, a hybrid energy storage mechanism involving dual-ion mechanism is confirmed by various ex situ characterization techniques, providing promising battery chemistry. Thus, this work opens up a new path to high performance AZIBs through a rational cathode design.
水系锌离子电池（AZIBs）因其低易燃性和成本效益，被视为锂离子电池最有前景的替代技术之一。在AZIBs的各种阴极材料中，环保且可持续的有机电极材料因其结构多样性和可调节性而脱颖而出。然而，它们有限的倍率性能和循环稳定性仍然是其在AZIBs中进一步应用的障碍。在此，采用了一种包括聚合和碳材料杂化的混合阴极设计策略来组装高倍率和耐用的AZIBs。具体而言，制备了一种具有活性羰基和仲胺基团的聚合物/石墨烯复合阴极，以构建高性能水系锌有机电池。此外，通过各种非原位表征技术证实了一种涉及双离子机制的混合储能机制，提供了有前景的电池化学。因此，这项工作通过合理的阴极设计为高性能AZIBs开辟了一条新途径。
