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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
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.
[References]
- Otomo J, Nishida S, Kato H, Nagamoto H, Oshima Y, ECS Trans., 16, 1275, 2008
- Youn DH, Han S, Bae G, Lee JS, Electrochem. Commun., 13, 806, 2011
- Ma L, Chu D, Chen RR, Int. J. Hydrog. Energy, 37(15), 11185, 2012
- Alcaide F, Alvarez G, Cabot PL, Grande HJ, Miguel O, Querejeta A, Int. J. Hydrog. Energy, 36(7), 4432, 2011
- Kakati N, Maiti J, Lee SH, Yoon YS, Int. J. Hydrog. Energy, 37(24), 19055, 2012
- Wei WT, Chen W, J. Power Sources, 204, 85, 2012
- Wei YC, Liu CW, Kang WD, Lai CM, Tsai LD, Wang KW, J. Electroanal. Chem., 660(1), 64, 2011
- Lim EJ, Kim HJ, Kim WB, Catal. Commun., 25, 74, 2012
- Lim EJ, Kim Y, Choi SM, Lee S, Noh Y, Kim WB, J. Mater. Chem. A, 3, 5491, 2015
- Almeida TS, Palma LM, Leonello PH, Morais C, Kokoh KB, De Andrade AR, J. Power Sources, 215, 53, 2012
- Feng YY, Liu ZH, Xu Y, Wang P, Wang WH, Kong DS, J. Power Sources, 232, 99, 2013
- Maiyalagan T, Scott K, J. Power Sources, 195(16), 5246, 2010
- Miecznikowski K, Kulesza PJ, J. Power Sources, 196(5), 2595, 2011
- Modibedi RM, Masombuka T, Mathe MK, Int. J. Hydrog. Energy, 36(8), 4664, 2011
- Ramulifho T, Ozoemena KI, Modibedi RM, Jafta CJ, Mathe MK, Electrochim. Acta, 59, 310, 2012
- Tang QW, Jiang LH, Jiang Q, Wang SL, Sun GQ, Electrochim. Acta, 77, 104, 2012
- Kim DS, Kim JH, Jeong IK, Choi JK, Kim YT, J. Catal., 290, 65, 2012
- Wang X, Xia Y, Electrochem. Commun., 10, 1644, 2008
- Morales-Acosta D, Ledesma-Garcia J, Godinez LA, Rodriguez HG, Alvarez-Contreras L, Arriaga LG, J. Power Sources, 195(2), 461, 2010
- Serov A, Nedoseykina T, Shvachko O, Kwak C, J. Power Sources, 195(1), 175, 2010
- Yang J, Cheng CH, Zhou W, Lee JY, Liu Z, Fuel Cells, 10, 907, 2010
- Lim DH, Choi DH, Lee WD, Park DR, Lee HI, Electrochem. Solid State Lett., 10(5), B87, 2007
- Radmilovic V, Gasteiger HA, Ross PN, J. Catal., 154(1), 98, 1995
- Wang Y, Wang X, Li CM, Appl. Catal. B: Environ., 99(1-2), 229, 2010
- Kim DH, Woo SI, Yang OB, Appl. Catal. B: Environ., 26, 285, 2000
- Tang YW, Chen Y, Zhou P, Zhou YM, Lu LD, Bao JC, Lu TH, J. Solid State Chem., 14, 2077, 2010
- Zhang ZY, Xin L, Sun K, Li WZ, Int. J. Hydrog. Energy, 36(20), 12686, 2011
[Cited By]
- Lee MS, Park KY, Park HK, Kang TW, Jang HD, Han SS, Jeon JK, Korean Journal of Chemical Engineering, 34(1), 100, 2017
- Christwardana M, Chung YJ, Kwon YC, Korean Journal of Chemical Engineering, 34(11), 3009, 2017
- 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
- Adhikari S, Mandal S, Kim DH, Korean Journal of Chemical Engineering, 37(12), 2359, 2020
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