Redox-Active Polymers Designed for the Circular Economy of Energy Storage Devices
Redox-Active Polymers Designed for the Circular Economy of Energy Storage Devices
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DOI：
10.1021/acsenergylett.1c01625
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发表时间：
2021-09
影响因子：
22
通讯作者：
Siew Ting Melissa Tan;T. Quill;Maximilian Moser;G. LeCroy;Xingxing Chen;Yilei Wu;Christopher J Takacs;Alberto Salleo;Alexander Giovannitti
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文献类型：
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作者：
Siew Ting Melissa Tan;T. Quill;Maximilian Moser;G. LeCroy;Xingxing Chen;Yilei Wu;Christopher J Takacs;Alberto Salleo;Alexander Giovannitti
电化学储能是支持电网存储和运输向低碳排放未来快速转型的基石。虽然电化学储能装置的研究主要涉及性能改进（能量密度和功率密度），但很少关注设计可低成本回收且对环境影响小的装置。因此，下一代储能设备还应该解决将可回收性集成到设备设计中的问题。在这里，我们展示了基于可溶液加工的氧化还原活性共轭聚合物的可回收储能装置。这些聚合物中的高电子和离子电荷传输使得单相电极能够在C倍率>100的水性电解质中运行，并且当电池充电至1.2V时具有良好的电化学稳定性。最后，我们证明了这些器件的可回收性，在每个回收步骤中实现了>85%的容量保持率。我们的工作为开发可持续能源存储技术的可回收设备提供了框架。
Electrochemical energy storage is a keystone to support the rapid transition to a low-carbon-emission future for grid storage and transportation. While research on electrochemical energy storage devices has mostly dealt with performance improvements (energy density and power density), little attention has been paid to designing devices that can be recycled with low cost and low environmental impact. Thus, next-generation energy storage devices should also address the integration of recyclability into the device design. Here, we demonstrate recyclable energy storage devices based on solution-processable redox-active conjugated polymers. The high electronic and ionic charge transport in these polymers enables the operation of single-phase electrodes in aqueous electrolytes with C-rates >100 with good electrochemical stability when the cell is charged to 1.2 V. Finally, we demonstrate the recyclability of these devices, achieving >85% capacity retention in each recycling step. Our work provides a framework for developing recyclable devices for sustainable energy storage technologies.