Changes in Microstructure of Ni–Co Dispersed Samaria-Doped Ceria Hydrogen Electrodes for the Improved Durability via Reversible Cycling Operation of Solid Oxide Cells
Abstract:We have quantitatively analyzed changes in the microstructure of double-layer hydrogen electrodes for solid oxide cells (SOCs), which consist of porous samaria-doped ceria (SDC) with highly dispersed Ni−Co nanoparticles as the catalyst layer (CL) and a thin current collecting layer of Ni‒YSZ cermet, whose durability we recently found to undergo a remarkable improvement via reversible cycling operation between steam electrolysis and fuel cell-modes. It was demonstrated by focused ion beam-scanning electron micr… Show more
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