Yim, Sung-Dae
(Corresponding author. Tel.: +82428603548)
,
Park, Gu-Gon
(fax: +82428603104.)
,
Sohn, Young-Jun
(Fuel Cell Research Center, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea)
,
Lee, Won-Yong
(Fuel Cell Research Center, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea)
,
Yoon, Young-Gi
(Fuel Cell Research Center, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea)
,
Yang, Tae-Hyun
(Fuel Cell Research Center, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea)
,
Um, Sukkee
(Fuel Cell Research Center, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea)
,
Yu, Sang-Phil
(Fuel Cell Research Center, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea)
,
Kim, Chang-Soo
(Fuel Cell Research Center, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea)
AbstractFor the fabrication of high-efficient bifunctional electrocatalyst of oxygen electrode, several electrocatalysts were prepared and tested on the URFC performance including both fuel cell and water electrolysis in a single cell URFC system. The catalysts revealed fuel cell performance in the ...
AbstractFor the fabrication of high-efficient bifunctional electrocatalyst of oxygen electrode, several electrocatalysts were prepared and tested on the URFC performance including both fuel cell and water electrolysis in a single cell URFC system. The catalysts revealed fuel cell performance in the order of Pt black>PtIr>PtRuOx>PtRu∼PtRuIr>PtIrOx and water electrolysis performance in the order of PtIr∼PtIrOx>PtRu>PtRuIr>PtRuOx∼Pt black. Considering both results PtIr showed the best URFC performance. With increasing Ir or IrOx composition from 0 to 50wt% in PtIr and PtIrOx catalysts the fuel cell performance decreased while the water electrolysis performance significantly improved. Hence, the PtIr catalyst including 1wt% Ir revealed the highest URFC efficiency. The catalyst content for the URFC system was optimized as 1.0mg/cm2 of Pt black as hydrogen electrode and 2.0mg/cm2 of PtIr (99:1) as oxygen electrode.
AbstractFor the fabrication of high-efficient bifunctional electrocatalyst of oxygen electrode, several electrocatalysts were prepared and tested on the URFC performance including both fuel cell and water electrolysis in a single cell URFC system. The catalysts revealed fuel cell performance in the order of Pt black>PtIr>PtRuOx>PtRu∼PtRuIr>PtIrOx and water electrolysis performance in the order of PtIr∼PtIrOx>PtRu>PtRuIr>PtRuOx∼Pt black. Considering both results PtIr showed the best URFC performance. With increasing Ir or IrOx composition from 0 to 50wt% in PtIr and PtIrOx catalysts the fuel cell performance decreased while the water electrolysis performance significantly improved. Hence, the PtIr catalyst including 1wt% Ir revealed the highest URFC efficiency. The catalyst content for the URFC system was optimized as 1.0mg/cm2 of Pt black as hydrogen electrode and 2.0mg/cm2 of PtIr (99:1) as oxygen electrode.
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