Microfabricated fuel cells
Microfabricated fuel cells
复制标题
DOI：
10.1016/s0013-4686(03)00351-7
复制
发表时间：
2003-09-30
影响因子：
6.6
通讯作者：
Litt, M
中科院分区：
文献类型：
--
作者：
Wainright, JS;Savinell, RF;Litt, M
本文报道了可用于小型发电的微型燃料电池的设计、材料和测试。多个共面燃料电池串联已建成陶瓷基板（以及硅和聚合物，但没有报告在这里）使用厚膜制造技术。这些燃料电池的测试给出了连续功率的功率密度在毫瓦（每平方厘米）范围内，脉冲条件下的功率密度为数十毫瓦，并指出了性能限制因素和更高功率密度的机会。这些燃料电池旨在对环境供应的空气进行操作，因此聚合物电解质必须能够在一定范围的湿度条件下操作。这些低功率器件的目标电导率在15%RH下> 1 mS cm（-1）。虽然CWRU正在为这种应用寻求新型聚合物电解质，但我们在此报告了由替代溶剂浇铸的Nafion（R）薄膜，该薄膜具有足够的导电性。目前正在采用若干机载燃料储存办法。我们已经证明，使用车载氢源前端含水硼氢化钠以及固体金属氢化物系统运行的燃料电池具有高燃料利用率。(C)2003爱思唯尔有限公司。保留所有权利。
This paper reports design, materials, and testing of microfabricated fuel cells that can be applied for small power generation. Multiple co-planar fuel cells in series have been built onto ceramic substrates (as well as silicon and polymer, but not reported here) using thick-film fabrication techniques. Testing of these fuel cells gave power densities in the milliwatt (per square centimeter) range for continuous power and tens of miliwatts tinder pulsing conditions, and have indicated performance limiters and opportunities for higher power densities. These fuel cells are intended to operate on ambient-supplied air, and thus the polymer electrolytes must be capable of operating Under a range of humidity conditions. The target conductivity for these low power devices is > 1 mS cm(-1) at 15% RH. Although novel polymer electrolytes are being pursued at CWRU for this application, we report here Nafion(R) films cast from alternate solvents that have adequate conductivity for this application. Several on-board fuel storage approaches are being pursued. We have demonstrated high fuel utilization by a fuel cell operating with on-board Source of hydrogen front aqueous sodium borohydride, as well from solid metal hydride systems. (C) 2003 Elsevier Ltd. All rights reserved.