Microfluidic hydrogen fuel cell with a liquid electrolyte

Ranga S. Jayashree; Michael Mitchell; Dilip Natarajan; Larry J. Markoski; Paul J.A. Kenis

doi:10.1021/la063673p

Microfluidic hydrogen fuel cell with a liquid electrolyte

Ranga S. Jayashree, Michael Mitchell, Dilip Natarajan, Larry J. Markoski, Paul J.A. Kenis

Research output: Contribution to journal › Article › peer-review

Abstract

We report the design and characterization of a microfluidic hydrogen fuel cell with a flowing sulfuric acid solution instead of a Nafion membrane as the electrolyte. We studied the effect of cell resistance, hydrogen and oxygen flow rates, and electrolyte flow rate on fuel cell performance to obtain a maximum power density of 191 mW/cm ². This flowing electrolyte design avoids water management issues, including cathode flooding and anode dry out. Placing a reference electrode in the outlet stream allows for independent analysis of the polarization losses on the anode and the cathode, thereby creating an elegant catalyst characterization and optimization tool.

Original language	English (US)
Pages (from-to)	6871-6874
Number of pages	4
Journal	Langmuir
Volume	23
Issue number	13
DOIs	https://doi.org/10.1021/la063673p
State	Published - Jun 19 2007

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la063673p

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AB - We report the design and characterization of a microfluidic hydrogen fuel cell with a flowing sulfuric acid solution instead of a Nafion membrane as the electrolyte. We studied the effect of cell resistance, hydrogen and oxygen flow rates, and electrolyte flow rate on fuel cell performance to obtain a maximum power density of 191 mW/cm 2. This flowing electrolyte design avoids water management issues, including cathode flooding and anode dry out. Placing a reference electrode in the outlet stream allows for independent analysis of the polarization losses on the anode and the cathode, thereby creating an elegant catalyst characterization and optimization tool.

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Microfluidic hydrogen fuel cell with a liquid electrolyte

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