Model-based analysis of electrode design in a direct methanol microscale fuel cell

Adam Scott Hollinger, Michael G. Willis, Daniel G. Doleiden

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

3 Scopus citations

Abstract

The performance of microscale fuel cells with high-aspectratio electrodes, defined as the ratio of electrode length to width, is often limited by the depletion of fuel along the length of the anode. Here we present a mathematical model to study electrode aspect ratio in a direct methanol microscale fuel cell. The model is supported with experimental data to show that low-aspect-ratio electrodes achieve higher power densities via improved mass transport to electrodes. The influence of electrode width on overall cell performance was investigated by varying the catalyst deposition region in low-aspect-ratio electrodes. The performance of our experimental fuel cell is consistent with our modeling studies, achieving a maximum power density of 25.3 mW/cm2 at room temperature with 1 M methanol. The model presented here can be used to further improve the geometric design of electrodes in a microscale fuel cell.

Original languageEnglish (US)
Title of host publicationASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2015, collocated with the ASME 2015 Power Conference, the ASME 2015 9th International Conference on Energy Sustainability, and the ASME 2015 Nuclear Forum
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791856611
DOIs
StatePublished - Jan 1 2015
EventASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2015, collocated with the ASME 2015 Power Conference, the ASME 2015 9th International Conference on Energy Sustainability, and the ASME 2015 Nuclear Forum - San Diego, United States
Duration: Jun 28 2015Jul 2 2015

Other

OtherASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2015, collocated with the ASME 2015 Power Conference, the ASME 2015 9th International Conference on Energy Sustainability, and the ASME 2015 Nuclear Forum
CountryUnited States
CitySan Diego
Period6/28/157/2/15

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All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Renewable Energy, Sustainability and the Environment

Cite this

Hollinger, A. S., Willis, M. G., & Doleiden, D. G. (2015). Model-based analysis of electrode design in a direct methanol microscale fuel cell. In ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2015, collocated with the ASME 2015 Power Conference, the ASME 2015 9th International Conference on Energy Sustainability, and the ASME 2015 Nuclear Forum American Society of Mechanical Engineers. https://doi.org/10.1115/FUELCELL201549496