Performance of a first-generation, aqueous-alkaline biocarbon fuel cell

Michael J. Antal, Teppei Nunoura, Kiyoshi Dowaki, Chihiro Fushimi, Stephen G. Allen, Erika Mészáros

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Lignocellulosic residues, which accompany the production of bioethanol and biodiesel fuels, can be efficiently and quickly converted into biocarbons (i.e. charcoal). Carbon fuel cells can generate electricity from these biocarbons with a theoretical thermodynamic efficiency of 100%. This presentation will detail the performance of an aqueous-alkaline carbon fuel cell. Thermochemical equilibrium favors the reduction of oxygen on the cathode of this cell at temperatures below 200°C. But the kinetics of carbon oxidation by hydroxyl anions on the anode demand temperatures above 200°C. Nevertheless, operating at 518 K and 35.8 bar with corncob charcoal as its fuel this cell was able to realize an open circuit voltage (OCV) of 0.57 V and a short circuit current density of 43.6 mA/cm2. This OCV is lower than expected; thermodynamics predicts an OCV of about 1 V. This finding motivates the emphasis of higher anode temperatures in our future work.

Original languageEnglish
Title of host publication234th ACS National Meeting, Abstracts of Scientific Papers
Publication statusPublished - Dec 31 2007
Event234th ACS National Meeting - Boston, MA, United States
Duration: Aug 19 2007Aug 23 2007

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other234th ACS National Meeting
CountryUnited States
CityBoston, MA
Period8/19/078/23/07

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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  • Cite this

    Antal, M. J., Nunoura, T., Dowaki, K., Fushimi, C., Allen, S. G., & Mészáros, E. (2007). Performance of a first-generation, aqueous-alkaline biocarbon fuel cell. In 234th ACS National Meeting, Abstracts of Scientific Papers (ACS National Meeting Book of Abstracts).