Jayashree Ranga S, Mitchell Michael, Natarajan Dilip, Markoski Larry J, Kenis Paul J A
Department of Chemical & Biomolecular Engineering and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
Langmuir. 2007 Jun 19;23(13):6871-4. doi: 10.1021/la063673p. Epub 2007 May 19.
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/cm2. 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.
我们报告了一种微流控氢燃料电池的设计与特性，该电池使用流动的硫酸溶液而非纳滤膜作为电解质。我们研究了电池电阻、氢气和氧气流速以及电解质流速对燃料电池性能的影响，以获得191 mW/cm2的最大功率密度。这种流动电解质设计避免了水管理问题，包括阴极水淹和阳极干涸。在流出物流中放置一个参比电极，可以独立分析阳极和阴极上的极化损失，从而创建了一个出色的催化剂表征和优化工具。
