Research Grant Report
High Performance Solid Oxide Fuel Cell Using Nanocubes
2019 Volume 27 Pages 31-34
Details
2019 Volume 27 Pages 31-34
A core–shell anode consisting of nickel–gadolinium-doped-ceria (Ni–GDC) nanocubes was directly fabricated by a chemical process in a solution containing a nickel source and GDC nanocubes covered with highly reactive {001} facets. The cermet anode effectively generated a Ni metal framework even at 500°C with the growth of the Ni spheres. Anode fabrication at such a low temperature without any sintering could insert a finely nanostructured layer close to the interface between the electrolyte and the anode. The maximum power density of the attractive anode was 97 mW·cm–2, which is higher than that of a conventional NiO–GDC anode prepared by an aerosol process at 55 mW·cm–2 and 600°C, followed by sintering at 1300°C. Furthermore, the macro- and microstructure of the Ni–GDC-nanocube anode were preserved before and after the power-generation test at 700°C. Especially, the reactive {001} facets were stabled even after generation test, which served to reduce the activation energy for fuel oxidation successfully.
