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Scalable lignin/graphite electrodes formed by mechanochemistry
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
2019 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, RSC ADVANCES, Vol. 9, no 68, p. 39758-39767Article in journal (Refereed) Published
Abstract [en]

Lignin is a promising candidate for energy storage because of its abundance, wide geographic distribution, and low cost as it is mainly available as a low value product from processing of wood into paper pulp. Lignin contains large amounts of potential quinone groups, which can be oxidized and reduced in a two electron process. This redox reaction makes lignin suitable for charge storage. However, lignin is insulating and therefore conductive materials are necessary in lignin electrodes, for whom the cost of the conductive materials hinders the scalable application. Among the organic conductive materials, graphite is one of the cheapest and is easily acquired from nature. In this work, we combine graphite and lignosulfonate (LS) and fabricate LS/graphite organic electrodes under a solvent-free mechanical milling method, without additives. The graphite is sheared into small particles with a size range from 50 nm to 2000 nm. Few-layer graphene is formed during the ball milling process. The LS/graphite hybrid material electrodes with primary stoichiometry of 4/1 (w/w) gives a conductivity of 280 S m(-1) and discharge capacity of 35 mA h g(-1). It is a promising material for the scalable production of LS organic electrodes.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2019. Vol. 9, no 68, p. 39758-39767
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-163040DOI: 10.1039/c9ra07507kISI: 000504904200022Scopus ID: 2-s2.0-85076636395OAI: oai:DiVA.org:liu-163040DiVA, id: diva2:1384253
Note

Funding Agencies|Knut and Alice Wallenberg foundation (KAW)Knut & Alice Wallenberg Foundation; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]; China Scholarship Council (CSC)China Scholarship Council

Available from: 2020-01-09 Created: 2020-01-09 Last updated: 2020-02-06Bibliographically approved

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