A New Design Using a Metal Wire Brush as the Current Collector of Micro-Tubular SOFCs

Abstract

In this study, a novel current collecting method was designed and demonstrated by inserting a metal wire brush into the anode supported micro-tubular SOFC. The new design enables a tight and stable contact between the wire and the inner wall of the anode which leads to a fine performance of the SOFC. Different kinds of metal wires were applied, where the copper wire brush (CZWB) shows a better performance than the stainless steel wire brush (SSWB). At a temperature of 700℃ and a fuel feed of hydrogen, the SOFC using CZWB can achieve a maximum power density of 290 mW/cm2 and an ohmic resistance of 0.66 Ω∙cm2. And the brush size has been approved to have little effect on the ohmic resistance. A 108 h long-time discharge test was carried on, resulting with a degradation rate of 1.728‰/h and indicating a relative stability.

Densification of Plasma-Sprayed YSZ Electrolyte by Suction Filtration Using Submicron/Nanoparticle Suspension for Metal-Supported SOFCs

“…Solid oxide fuel cells (SOFCs) are efficient and environmentally friendly power generation devices that can directly convert the chemical energy of fuel into electricity (1,2). In the last 20 years, metal-supported SOFCs (MS-SOFCs) have been widely investigated as thirdgeneration SOFCs (3) after the first generation of electrolyte-supported cells and the second generation of anode-supported cells (4).…”