Preliminary Results on a 5W Portable Butane MT-SOFC Stack As a Battery Charger

Monday, 27 July 2015
Hall 2 (Scottish Exhibition and Conference Centre)
H. K. Jung (Pohang University of Science and Technology), J. E. Hong, A. Dhir, A. J. Majewski, B. Hari (University of Birmingham), R. Steinberger-Wilckens (University of Birmingham,UK), Y. S. Chung, J. G. Sung, J. S. Chung, and N. M. Sammes (Pohang University of Science and Technology)
A microtubular design for a solid oxide fuel cell (MT-SOFC) is studied for use in stacks for high strength and portability. Adapting readily available butane as the fuel source and intermediate temperature operation, MT-SOFC can replace batteries for various portable applications. This work studies the fabrication and preliminary performance results of a 5W MT-SOFC stack using butane as the fuel. The tubes were produced using a standard die extruder into a Ni-ceria-10mol% scandia stabilized zirconia (ScSZ) anode support. A ScSZ electrolyte and a La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) cathode were added on top of the tube, respectively, via a dip-coating method. The outer and inner diameters of the unit cell were 3mm and 2mm, respectively. The fabrication process was optimized and the electrochemical properties of a unit cell operated at intermediate (600~700oC) temperature are described. Unit cells were then stacked for an output of 5 watts.

Fig. 1. (a) Pre-sintered anode support MT-SOFC; (b) Fabricated anode support MT-SOFCs; (b) Schematic of 5W MT-SOFC stack.


This work was sponsored by KETEP No. 4.0010459.01.