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.

中文翻译：

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为储能设备的循环经济而设计的氧化还原活性聚合物

电化学储能是支持电网存储和运输快速过渡到低碳排放未来的基石。虽然对电化学储能设备的研究主要涉及性能改进（能量密度和功率密度），但很少有人关注设计可回收、成本低、环境影响低的设备。因此，下一代储能设备还应该将可回收性整合到设备设计中。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单相电极能够在具有 C 速率的水性电解质中运行 > 当电池充电至 1.2 V 时，100 具有良好的电化学稳定性。最后，我们证明了这些设备的可回收性，在每个回收步骤中实现了 > 85% 的容量保留。我们的工作为开发用于可持续能源存储技术的可回收设备提供了一个框架。