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

doi:10.3762/bjnano.6.184

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

Beilstein J Nanotechnol. 2015 Aug 27:6:1805-10. doi: 10.3762/bjnano.6.184. eCollection 2015.

Authors

Sanghoon Ji¹, Waqas Hassan Tanveer², Wonjong Yu², Sungmin Kang³, Gu Young Cho², Sung Han Kim⁴, Jihwan An⁵, Suk Won Cha⁶

Affiliations

¹ Graduate School of Convergence Science and Technology, Seoul National University, Iui-dong, Yeongtong-gu, Suwon 443-270, South Korea.
² Department of Mechanical Engineering, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 151-742, South Korea.
³ Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daehak-ro, Yuseong- gu, Daejeon 305-701, South Korea.
⁴ Corporate R&D Institute, Samsung Electro Mechanics, Maeyoung-ro, Yeongtong-gu, Suwon 443-743, South Korea.
⁵ Manufacturing Systems and Design Engineering Programme, Seoul National University of Science and Technology, Gongneung-ro, Nowon-gu, Seoul 139-743, South Korea.
⁶ Graduate School of Convergence Science and Technology, Seoul National University, Iui-dong, Yeongtong-gu, Suwon 443-270, South Korea ; Department of Mechanical Engineering, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 151-742, South Korea.

Abstract

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.

Keywords: anodic aluminum oxide; atomic layer deposition; bottom electrode catalyst; mass transport; solid oxide fuel cell.