一个微流体燃料电池,带有通过流的多孔电极
Erik Kjeang1, Raphaelle Michel, David A Harrington
1Department of Mechanical Engineering, Institute for Integrated Energy Systems (IESVic), University of Victoria, 3800 Finnerty Road, Victoria, BC, V8W2Y2, Canada.
Journal of the American Chemical Society
|March 5, 2008
概括
这项研究介绍了一种新的无膜微流体燃料电池,使用流通孔隙电极. 创新的设计实现了高功率密度和能源效率,具有现场再生的潜力.
科学领域:
- 电化学 电化学 电化学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 微流体燃料电池提供了小型化的优势.
- 传统设计在燃料利用和运输效率方面存在局限性.
- 无膜配置简化了设计,但需要高效的离子传输.
研究的目的:
- 为了展示一种新的微流体燃料电池架构,通过流通的多孔电极.
- 为了提高燃料利用率和对流/扩散运输.
- 在成本有效的设计中实现高功率密度和能量转换效率.
主要方法:
- 使用快速原型制造制造微流体燃料电池.
- 通过多孔电极实现氧化还原物种的交叉流体系结构.
- 在没有膜的设置中,用于废物流管理的直角共层流.
主要成果:
- 在室温下达到高达131mWcm-2的功率密度.
- 证明了高的整体能量转换效率,在0.8 V和1 microL min-1流速下使用了94%的燃料.
- 原型燃料电池的成本约为2美元/单位.
结论:
- 通过流动的多孔电极架构显著提高了微流体燃料电池的性能.
- 这种设计为便携式能源应用提供了具有成本效益和效率的解决方案.
- 在现场燃料和氧化剂再生是可行的,通过逆转流通架构.
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