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Received July 31, 2009
Accepted October 20, 2009
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The effect of PtRuW ternary electrocatalysts on methanol oxidation reaction in direct methanol fuel cells
Petroleum Displacement Technology Research Center, Korea Research Institute of Chemical Technology (KRICT), Sinseongno, Yuseong-gu, Daejeon 305-600, Korea 1Department of Hydrogen and Fuel Cells Engineering, Specialized Graduate School, Chonbuk National University, Jeonju 561-756, Korea 2Department of Mineral Resources & Energy Engineering, Chonbuk National University, Jeonju 561-756, Korea 3Faculty of Environmental Engineering, University of Seoul, Seoul 130-743, Korea
jmsohn@jbnu.ac.kr
Korean Journal of Chemical Engineering, March 2010, 27(3), 802-806(5), 10.1007/s11814-010-0146-2
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Abstract
PtRu and PtRuW ternary electrocatalysts were synthesized using an NaBH4 reduction method. A uniform distribution of particles, with average particle size of 3-3.5 nm was indentified from X-ray diffraction (XRD) and transmission electron microscopy (TEM). The electrochemically active surface area was slightly decreased after the addition of W into PtRu. When W was added to PtRu, the specific and mass activity of methanol electro-oxidation was increased. The most active catalyst was Pt5Ru4W, of which specific and mass activities were 265.38 mA/m2 and 6.21 A/g.catal, respectively. The specific and mass activity was 390 and 320% higher than that of PtRu.
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Wang ZB, Yin GP, Shi PF, Sun YC, Electrochem. Solid State Lett., 9(1), A13 (2006)
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