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Issue
Korean Journal of Chemical Engineering,
Vol.33, No.6, 1799-1804, 2016
Enhanced activity of carbon-supported PdCo electrocatalysts toward electrooxidation of ethanol in alkaline electrolytes
Han S, Chae GS, Lee JS
Carbon-supported Pd and PdCo (1 : 2, 1 : 1, 2 : 1 and 3 : 1) catalysts were synthesized by chemical reduction with NaBH4. Their electrochemical properties were investigated by cyclic voltammetry, chronoamperometry and CO stripping voltammetry in alkaline electrolytes, and compared with commercial Pt/C and PtRu(1 : 1)/C catalysts. In electrochemical oxidation of ethanol in an alkaline electrolyte, marked improvements in the current density and onset potential were observed by incorporating Co into Pd/C to form PdCo/C alloy electrocatalysts. The best catalyst PdCo (1 : 1)/C showed performance superior to the commercial Pt/C or PtRu/C catalysts. It is shown that the incorporated Co facilitates the oxidation of strongly-adsorbed carbonaceous intermediate species on the surface of Pd by forming OH. group and reacts away the intermediates from Pd surface. Thus, PdCo(1 : 1)/C catalyst is a promising anode catalyst for direct ethanol fuel cells with alkaline electrolytes.
Keywords: Palladium-cobalt Alloy; Electrocatalysts; Direct Ethanol Fuel Cells; Alkaline Electrolytes
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[Cited By]
  1. Lee MS, Park KY, Park HK, Kang TW, Jang HD, Han SS, Jeon JK, Korean Journal of Chemical Engineering, 34(1), 100, 2017
  2. Christwardana M, Chung YJ, Kwon YC, Korean Journal of Chemical Engineering, 34(11), 3009, 2017
  3. Jeffery AA, Lee SY, Min JH, Kim YJ, Lee SH, Lee JH, Jung NG, Yoo SJ, Korean Journal of Chemical Engineering, 37(8), 1360, 2020
  4. Adhikari S, Mandal S, Kim DH, Korean Journal of Chemical Engineering, 37(12), 2359, 2020
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