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Issue
Korean Journal of Chemical Engineering,
Vol.25, No.3, 431-436, 2008
Preparation of Pt-Co catalysts on mesoporous carbon and effect of alloying on catalytic activity in oxygen electro-reduction
Joo JB, Kim YJ, Kim W, Kim ND, Kim P, Kim Y, Lee YW, Yi J
Mesoporous carbon (MC)-supported PtCo catalysts were prepared by a sodium borohydride (NaBH4) reduction method. To increase the alloy degree of PtCo catalyst, the heat treatment was carried out at various temperatures (300-700 ℃). The heat-treated PtCo catalysts (PtCo/MC-x) had the higher degrees of Pt-Co alloy than that of as-synthesized PtCo catalyst (PtCo/MC). MC supported-PtCo catalyst (PtCo/MC-500) that was treated at 500 ℃, had the highest activity and lowest overpotential in oxygen electro-reduction (ORR) among the prepared PtCo catalysts. The high alloy degree and favorable chemical states of PtCo/MC-500 are believed to be responsible for the superior activity in oxygen electroreduction compared to the other PtCo catalysts.
Keywords: Mesoporous Carbon; Electrocatalyst; PtCo; Oxygen Reduction; Fuel Cell
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[Cited By]
  1. Joh HI, Seo SJ, Kim HT, Moon SH, Korean Journal of Chemical Engineering, 27(1), 45, 2010
  2. Jung D, Beak S, Nahm KS, Kim P, Korean Journal of Chemical Engineering, 27(6), 1689, 2010
  3. Park JH, Sohn Y, Jung DH, Kim P, Joo JB, Journal of Industrial and Engineering Chemistry, 36, 109, 2016
  4. Sohn YS, Jung NG, Lee MJ, Lee SH, Nahm KS, Kim P, Yoo SJ, Journal of Industrial and Engineering Chemistry, 79, 210, 2019
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