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More sustainable energy storage: lignin based electrodes with glyoxal crosslinking

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Abstract

Lignin is a promising material to be used in sustainable energy storage devices. It may act as an active component due to hydroquinone motifs or as a binder in electrodes. While usually it is blended or modified with unsustainable chemicals, we investigate crosslinking with glyoxal as a new route to obtain more benign electrodes. For combining the advantages of high charge (lignin as an active material) and electrode stability (lignin as a 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 mA h g−1 at a discharge rate of 0.2 A g−1.

Graphical abstract: More sustainable energy storage: lignin based electrodes with glyoxal crosslinking

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Publication details

The article was received on 31 Aug 2017, accepted on 29 Oct 2017 and first published on 02 Nov 2017


Article type: Paper
DOI: 10.1039/C7TA07686J
Citation: J. Mater. Chem. A, 2017, Advance Article
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    More sustainable energy storage: lignin based electrodes with glyoxal crosslinking

    S. Chaleawlert-umpon and C. Liedel, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA07686J

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