Evaluation of Three-Dimensional Placement of Built-in Catalytic Partial Oxidation Catalyst in an Anode-Supported Honeycomb SOFC

Abstract

Honeycomb solid oxide fuel cells (SOFCs) can achieve high power density with improved thermo-mechanical durability at high temperatures [1]. In this study, a compact SOFC with catalytic partial oxidation reforming catalyst embedded in the flow channels of a porous honeycomb anode support has been fabricated and evaluated. I-V measurements and gas chromatography for the outlet gas were carried out while methane/air mixture gas was fed as fuel. I-V measurements were performed to compare the performance of the two configurations: one with fuel supplied from the central channel and discharged from the surrounding four channels, and the other with fuel supplied from the four channels and discharged from the central channel. As a result, the effect of concentration overpotential was smaller in the latter case. The gas chromatograph detected hydrogen in the reformed gas for both cases.AcknowledgmentsThanks are offered to Professor Kohei Ito of Kyushu University for valuable discussions.References H. Nakajima, S. Murakami, S. Ikeda, and T. Kitahara, Heat Mass Transfer, 54, 2545 (2018).