The effect of PtRuW ternary electrocatalysts on methanol oxidation reaction in direct methanol fuel cells |
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Authors: | Dae Kyu Kang Chang Soo Noh Sang Tae Park Jung Min Sohn Seung Kon Kim Young-Kwon Park |
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Affiliation: | (1) Department of Engineering Science, Niihama National College of Technology, Yagumocho 7-1, Niihama Ehime, 792-8580, Japan;(2) Faculty of Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashihiroshima Hiroshima, 739-0046, Japan |
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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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