Solution-Processable Redox-Active Polymers of Intrinsic Microporosity for Electrochemical Energy Storage.
Solution-Processable Redox-Active Polymers of Intrinsic Microporosity for Electrochemical Energy Storage.
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DOI：
10.1021/jacs.2c07575
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发表时间：
2022-09-21
影响因子：
15
通讯作者：
Song, Qilei
中科院分区：
文献类型：
--
作者：
Wang, Anqi;Tan, Rui;Breakwell, Charlotte;Wei, Xiaochu;Fan, Zhiyu;Ye, Chunchun;Malpass-Evans, Richard;Liu, Tao;Zwijnenburg, Martijn A.;Jelfs, Kim E.;McKeown, Neil B.;Chen, Jun;Song, Qilei
氧化还原活性有机材料已成为电化学装置中传统无机电极材料的有前途的替代品。然而，氧化还原活性有机材料在实际锂离子电池装置中的部署受到其在电解质溶剂中不理想的溶解度、缓慢的电荷转移和质量传输以及加工复杂性的阻碍。在这里，我们报告了一种新的分子工程方法来制备具有内在微孔性（PIM）的氧化还原活性聚合物，该聚合物具有亚纳米孔的开放网络和丰富的可接近的基于羰基的氧化还原位点，用于快速锂离子传输和存储。氧化还原活性 PIM 可以通过溶液加工成薄膜和聚合物-碳复合材料，具有均匀分散的微观结构，同时不溶于电解质溶剂。经过溶液处理的氧化还原活性 PIM 电极表现出改善的锂离子电池循环性能，且没有明显的容量衰减。氧化还原活性 PIM 具有固有微孔性、可逆氧化还原活性和溶液可加工性的综合特性，可在用于能量存储、传感器和电子应用的各种电化学装置中具有广泛的用途。
Redox-active organic materials have emerged as promising alternatives to conventional inorganic electrode materials in electrochemical devices for energy storage. However, the deployment of redox-active organic materials in practical lithium-ion battery devices is hindered by their undesired solubility in electrolyte solvents, sluggish charge transfer and mass transport, as well as processing complexity. Here, we report a new molecular engineering approach to prepare redox-active polymers of intrinsic microporosity (PIMs) that possess an open network of subnanometer pores and abundant accessible carbonyl-based redox sites for fast lithium-ion transport and storage. Redox-active PIMs can be solution-processed into thin films and polymer–carbon composites with a homogeneously dispersed microstructure while remaining insoluble in electrolyte solvents. Solution-processed redox-active PIM electrodes demonstrate improved cycling performance in lithium-ion batteries with no apparent capacity decay. Redox-active PIMs with combined properties of intrinsic microporosity, reversible redox activity, and solution processability may have broad utility in a variety of electrochemical devices for energy storage, sensors, and electronic applications.
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影响因子：
29.4
作者：
Han, Xiaoyan;Chang, Caixian;Sun, Jutang
通讯作者：
Sun, Jutang
影响因子：
56.9
作者：
Carta, Mariolino;Malpass-Evans, Richard;McKeown, Neil B.
通讯作者：
McKeown, Neil B.
高能锂电池共轭羰基化合物电极的功能导向设计
影响因子：
8.4
作者：
Liang, Yanliang;Zhang, Peng;Chen, Jun
通讯作者：
Chen, Jun
影响因子：
41.2
作者：
Jimenez-Solomon, Maria F.;Song, Qilei;Livingston, Andrew G.
通讯作者：
Livingston, Andrew G.
影响因子：
41.2
作者：
Liang, Yanliang;Jing, Yan;Yao, Yan
通讯作者：
Yao, Yan