Surface engineering of nanoporous substrate for solid oxide fuel cells with atomic layer-deposited electrolyte

Sanghoon Ji, Waqas Hassan Tanveer, Wonjong Yu, Sungmin Kang, Gu Young Cho, Sung Han Kim, Jihwan An, Suk Won Cha


Solid oxide fuel cells with atomic layer-deposited thin film electrolytes supported on anodic aluminum oxide (AAO) are electrochemically characterized with varying thickness of bottom electrode catalyst (BEC); BECs which are 0.5 and 4 times thicker than the size of AAO pores are tested. The thicker BEC ensures far more active mass transport on the BEC side and resultantly the thicker BEC cell generates ≈11 times higher peak power density than the thinner BEC cell at 500 °C.