Carbon Based Electrodes for Upscaling Microfluidic Fuel Cells
Carbon Based Electrodes for Upscaling Microfluidic Fuel Cells
复制标题
用于升级微流体燃料电池的碳基电极
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
A. Bazylak
中科院分区：
文献类型：
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作者：
D. Fuerth;A. Bazylak
在这项工作中，我们提出了一种实验性微流控燃料电池，其具有新型的放大多孔电极结构，与传统的微流控燃料电池相比，它提供了更高的总功率输出，并提出了一种电极材料评估方法，为改进性能的设计提供信息。我们的概念验证架构是先前提出的流式细胞的放大版本，其活性电极表面积超过9倍。我们分别以0.04M甲酸和0.01M高锰酸钾作为燃料和氧化剂，溶解在1M硫酸电解质中。采用铂黑作为阳极和阴极催化剂。碳基多孔电极包括毛毡、布、纤维和泡沫，并与传统的东丽复写纸进行了比较，以表征其各自的性能。我们还讨论了由电极体积归一化的电流密度，这适用于比较流过结构。本文还介绍了利用电极投影表面积归一化电流的传统方法。ASME版权所有©2012
In this work, we present an experimental microfluidic fuel cell with a novel up-scaled porous electrode architecture that provides higher overall power output compared to conventional microfluidic fuel cells and a methodology for electrode material evaluation to inform designs for improved performance. Our proof-of-concept architecture is an up-scaled version of a previously presented flow-through cell with more than nine times the active electrode surface area. We employed 0.04M formic acid and 0.01M potassium permanganate as fuel and oxidant, respectively, dissolved in a 1M sulfuric acid electrolyte. Platinum black was employed as the catalyst for both anode and cathode. Carbon based porous electrodes including felt, cloth, fibre, and foam were compared to traditional Toray carbon paper in order to characterize their respective performances. We also discussed current densities normalized by electrode volume, which is appropriate for comparison of flow-through architectures. The traditional method of current normalization by projected electrode surface area is also presented.Copyright © 2012 by ASME