Redox-Active Polymers Designed for the Circular Economy of Energy Storage Devices

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 attenti...

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Bibliographic Details
Published in:ACS energy letters 2021-10, Vol.6 (10), p.3450-3457
Main Authors: Tan, Siew Ting Melissa, Quill, Tyler J, Moser, Maximilian, LeCroy, Garrett, Chen, Xingxing, Wu, Yilei, Takacs, Christopher J, Salleo, Alberto, Giovannitti, Alexander
Format: Article
Language:English
Subjects:
Electrode
Electrolytes
ENERGY STORAGE
Polymers
Recycling
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Summary: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.
ISSN:2380-8195
2380-8195
DOI:10.1021/acsenergylett.1c01625