Three‐dimensional Polymers as Organic Cathodes for Affordable and Sustainable Sodium/Potassium‐ion Batteries
Three‐dimensional Polymers as Organic Cathodes for Affordable and Sustainable Sodium/Potassium‐ion Batteries
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三维聚合物作为经济且可持续的钠/钾离子电池的有机阴极
DOI：
10.1002/batt.202300472
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发表时间：
2023
影响因子：
5.7
通讯作者：
Luo, Chao
中科院分区：
文献类型：
--
作者：
Mohammadiroudbari, Motahareh;Li, Shi;Huang, Jinghao;Yang, Zhenzhen;Chen, Fu;Cheng, Lei;Luo, Chao
氧化还原活性聚合物(RAP)由于其灵活的化学结构和在电解液中的可忽略的溶解性而被认为是经济和可持续发展的电池的有机电极材料。开发具有多孔结构和交联剂的高维RAP可以通过降低溶解度和提高反应动力学来进一步提高其稳定性和氧化还原能力。本文报道了钠离子电池(NIBS)和钾离子电池(KIBS)中作为稳定有机阴极的两种三维(3D)RAP。通过四(4-氨基苯基)甲烷和两种不同的二酸酐的缩聚，在RAP的重复单元中引入了羰基官能团。具有互连的3D扩展共轭结构的RAP经历了多电子氧化还原反应，在NIBS和KIBS中表现出高性能，循环寿命长(高达8000 循环)和快速充电能力(高达2 A g−1)。研究结果表明，开发3D RAP是实现高性能、经济实惠和可持续的NIB和KIBS的有效策略。
Redox‐active polymers (RAPs) are promising organic electrode materials for affordable and sustainable batteries due to their flexible chemical structures and negligible solubility in the electrolyte. Developing high‐dimensional RAPs with porous structures and crosslinkers can further improve their stability and redox capability by reducing the solubility and enhancing reaction kinetics. This work reports two three‐dimensional (3D) RAPs as stable organic cathodes in Na‐ion batteries (NIBs) and K‐ion batteries (KIBs). Carbonyl functional groups are incorporated into the repeating units of the RAPs by the polycondensation of Tetrakis(4‐aminophenyl)methane and two different dianhydrides. The RAPs with interconnected 3D extended conjugation structures undergo multi‐electron redox reactions and exhibit high performance in both NIBs and KIBs in terms of long cycle life (up to 8000 cycles) and fast charging capability (up to 2 A g−1). The results demonstrate that developing 3D RAPs is an effective strategy to achieve high‐performance, affordable, and sustainable NIBs and KIBs.