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More sustainable energy storage: lignin based electrodes with glyoxal crosslinking

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Chaleawlert-umpon,  Saowaluk
Clemens Liedel, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Liedel,  Clemens
Clemens Liedel, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Citation

Chaleawlert-umpon, S., & Liedel, C. (2017). More sustainable energy storage: lignin based electrodes with glyoxal crosslinking. Journal of Materials Chemistry A, 5(46), 24344-24352. doi:10.1039/C7TA07686J.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002E-55E4-9
Abstract
Lignin is a promising material to be used in sustainable energy storage devices. It may act as active component due to hydroquinone motives or as binder in electrodes. While usually it is blended or modified with unsustainable chemicals, we investigate crosslinking with glyoxal as a new route to more benign electrodes. For combining advantages of high charge (lignin as active material) and electrode stability (lignin as binder), we chose a two-step process in which we first form lignin-carbon composites and subsequently crosslink lignin on the carbon. We discuss crosslinking of the material as well as influences on charge storage. Final electrodes benefit from combined faradaic and non-faradaic charge storage and reach a capacity of 80 mAh/g at a discharge rate of 0.2 A/g.