Simple Stacking Methods for Silicon Micro Fuel Cells
Simple Stacking Methods for Silicon Micro Fuel Cells
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DOI：
10.3390/mi5030558
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发表时间：
2014-08
期刊：
影响因子：
3.4
通讯作者：
G. Scotti;P. Kanninen;T. Kallio;S. Franssila
中科院分区：
文献类型：
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作者：
G. Scotti;P. Kanninen;T. Kallio;S. Franssila
摘要：我们提出了两种简单的气体堆积方法，分别采用并联和串联两种方法，用于集集流、流场和气体扩散层于一体的微制造硅燃料电池的堆叠。气体扩散层使用黑硅实现。在这项工作中提出的两种堆叠方法中，流体孔口和气流拓扑是旋转对称的，使得我们能够在不增加电气或流体端口或互连的情况下堆叠燃料电池。由于这种简单性和每个电池的结构紧凑，所获得的堆叠非常薄(对于两个电池的堆叠大约1.6 mm)。我们制作了两种不同气流拓扑的双电池电堆，获得了1.6V的开路电压和63 mW·cm−2的功率密度，证明了设计的可行性。关键词：硅；微型燃料电池；堆积；深度反应离子刻蚀；聚合物电解质膜；黑色硅1.引入燃料电池传统上用于固定发电或电动汽车，但最近，微型燃料电池(Micro FC)已被研究为移动电话、MP3播放器、便携式摄像机、
Abstract: We present two simple methods, with parallel and serial gas flows, for the stacking of microfabricated silicon fuel cells with integrated current collectors, flow fields and gas diffusion layers. The gas diffusion layer is implemented using black silicon. In the two stacking methods proposed in this work, the fluidic apertures and gas flow topology are rotationally symmetric and enable us to stack fuel cells without an increase in the number of electrical or fluidic ports or interconnects. Thanks to this simplicity and the structural compactness of each cell, the obtained stacks are very thin (~1.6 mm for a two-cell stack). We have fabricated two-cell stacks with two different gas flow topologies and obtained an open-circuit voltage (OCV) of 1.6 V and a power density of 63 mW·cm −2 , proving the viability of the design. Keywords: silicon; micro fuel cell; stacking; deep reactive ion etching; polymer electrolyte membrane; black silicon 1. Introduction Fuel cells have been traditionally used for stationary power generation or in electrical vehicles, but miniaturized micro fuel cells (micro FC) have been, more recently, researched as a viable alternative to rechargeable batteries for applications, such as mobile phones, MP3 players, camcorders,