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Direct lignin fuel cell for power generation
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
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2013 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 3, no 15, 5083-5089 p.Article in journal (Refereed) Published
Abstract [en]

Lignin, the second most abundant component after cellulose in biomass, has been examined in this study as a fuel for direct conversion into electricity using direct carbon fuel cells (DCFC). Two different types of industrial lignins were investigated: Lignosulfonate (LS) and Kraft lignin (KL), in their commercial forms, after their blending with commercial active carbon (AC) or after alteration of their structures by a pH adjustment to pH 10. It was found that the open circuit voltage (OCV) of the DCFC could reach around 0.7 V in most of the trials. Addition of active carbon increased the maximum current density from 43-57 to 83-101 mA cm(-2). The pH adjustment not only increased the maximum current density but also reduced the differences between the two types of lignins, resulting in an OCV of 0.68-0.69 V and a maximum current density of 74-79 mA cm(-2) from both lignins. Typical power density was 12 (for KL + AC) and 24 mW cm(-2) (for LS + AC). It is concluded that a direct lignin fuel cell is feasible and the lignin hydrophilicity is critical for the cell performance.

Place, publisher, year, edition, pages
2013. Vol. 3, no 15, 5083-5089 p.
Keyword [en]
Direct Conversion, Carbon Fuels, Electrolyte, Biomass, Electricity, Pyrolysis, Chemistry, Kinetics, Nmr
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URN: urn:nbn:se:kth:diva-120568DOI: 10.1039/c3ra23418eISI: 000316226500034Scopus ID: 2-s2.0-84878045767OAI: oai:DiVA.org:kth-120568DiVA: diva2:615787
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Vinnova
Note

QC 20130412

Available from: 2013-04-12 Created: 2013-04-11 Last updated: 2017-12-06Bibliographically approved

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Lindström, Mikael E.

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