%0 Journal Article
%K Metal-supported SOFC
%K Direct flame sofc
%K Thermal cycling
%A Michael C Tucker
%A Andrew S Ying
%B International Journal of Hydrogen Energy
%D 2017
%G eng
%N 38
%P 24426 - 24434
%R 10.1016/j.ijhydene.2017.07.224
%T Metal-supported solid oxide fuel cells operated in direct-flame configuration
%V 42
%8 09/2017
%! International Journal of Hydrogen Energy
%X <p>Metal-supported solid oxide fuel cells (MS-SOFC) with infiltrated catalysts on both anode and cathode side are operated in direct-flame configuration, with a propane flame impinging on the anode. Placing thermal insulation on the cathode dramatically increases cell temperature and performance. The optimum burner-to-cell gap height is a strong function of flame conditions. Cell performance at the optimum gap is determined within the region of stable non-coking conditions, with equivalence ratio from 1 to 1.9 and flow velocity from 100 to 300 cm s<sup>−1</sup>. In this region, performance is most strongly correlated to flow velocity and open circuit voltage. The highest peak power density achieved is 633 mW cm<sup>−2</sup> at 833 °C, for equivalence ratio of 1.8 and flow velocity of 300 cm s<sup>−1</sup>. The cell starts to produce power within 10 s of being placed in the flame, and displays stable performance over 10 extremely rapid thermal cycles. The cell provides stable performance for &gt;20 h of semi-continuous operation.</p>