期刊
JOURNAL OF POWER SOURCES
卷 242, 期 -, 页码 472-477出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.05.129
关键词
Fuel cell; Nanofluidic; Microfluidic; Membraneless; Nanofoam; Nanotechnology
资金
- Natural Sciences and Engineering Research Council of Canada
- Western Economic Diversification Canada
- Canada Foundation for Innovation
- British Columbia Knowledge Development Fund
- Simon Fraser University (SFU)
Fuel cells are gaining momentum as a critical component in the renewable energy mix for stationary, transportation, and portable power applications. State-of-the-art fuel cell technology benefits greatly from nanotechnology applied to nanostructured membranes, catalysts, and electrodes. However, the potential of utilizing nanofluidics for fuel cells has not yet been explored, despite the significant opportunity of harnessing rapid nanoscale reactant transport in close proximity to the reactive sites. In the present article, a nanofluidic fuel cell that utilizes fluid flow through nanoporous media is conceptualized and demonstrated for the first time. This transformative concept captures the advantages of recently developed membraneless and catalyst-free fuel cell architectures paired with the enhanced interfacial contact area enabled by nanofluidics. When compared to previously reported microfluidic fuel cells, the prototype nanofluidic fuel cell demonstrates increased surface area, reduced activation overpotential, superior kinetic characteristics, and moderately enhanced fuel cell performance in the high cell voltage regime with up to 14% higher power density. However, the expected mass transport benefits in the high current density regime were constrained by high ohmic cell resistance, which could likely be resolved through future optimization studies. (C) 2013 Elsevier B.V. All rights reserved.
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