Evaluation of porous platinum,nickel, and lanthanum strontium cobaltite as electrode materials for low-temperature solid oxide fuel cells |
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| Authors: | Hojean Jung Kiho Bae Dong Young Jang Yoon Ho Lee Suk-Won Cha Joon Hyung Shim |
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| Affiliation: | 1. School of Mechanical Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea;2. High-temperature Energy Materials Research Center, Korea Institute of Science and Technology (KIST), 14-5 Hwarang-ro, Seongbuk-gu, Seoul 136-791, Republic of Korea;3. School of Mechanical and Aerospace Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-744, Republic of Korea;4. Graduate School of Convergence Science and Technology, Seoul National University, 864-1 Iui-dong, Yeongtong-gu, Suwon 443-270, Republic of Korea |
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| Abstract: | Porous Pt, Ni, and lanthanum strontium cobaltite (LSC) are evaluated as electrode materials for solid oxide fuel cells at the low temperature range under 500 °C. Porous metal electrodes 150 nm thick are prepared by sputtering. Porous LSC was deposited to a typical thickness of 1.5 μm by pulsed laser deposition as the cathode. In terms of fuel cell performance, we confirm that Pt is the best material for both the cathode and the anode under 400 °C, but LSC outperforms Pt as a cathode at temperatures over 450 °C in our configurations. Porous Ni anode is identified as being less effective than the porous Pt. It is determined that these results are closely related to the differences in electrode performance and to morphological changes during fuel cell operation. |
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| Keywords: | Solid oxide fuel cells Thin-film electrode Platinum Lanthanum strontium cobaltite Nickel |
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