Hexapod PtRuCu Nanocrystalline Alloy for Highly Efficient and Stable Methanol Oxidation

By Shengfeng Xue, W. Deng, Fan Yang, Jinlong Yang, Ibrahim Saana Amiinu, Daping He, Haolin Tang, Shichun Mu. ACS Catalysis, 2018

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A hexapod PtRuCu nanocrystalline alloy material is successfully fabricated by a facile approach based on Stranski–Krastanov growth and galvanic replacement and used as an efficient catalyst for direct methanol fuel cells (DFMCs). Because of the synergetic effect of metallic elements in the methanol oxidation, the activity and durability of the prepared PtRuCu/C catalyst is significantly enhanced. It has a mass activity of 1.35 A mgPt–1 and a specific activity of 3.92 mA cm–2, which are 3.8 and 8.2 times higher than those of Pt/C, respectively. Its mass activity only decreases 27% after 800 CV cycles compared with Pt/C (60% decline), indicating the admirable stability of the PtRuCu catalyst.

Subfields: Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/b4333252d334c13b4a66eaf015911a5a949fe464

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Citations in the corpus

• A fundamental comprehension and recent progress in advanced Pt‐based ORR nanocatalysts (2021, background): “Usually, as shown in Figure 3, improving the activity and durability of Pt‐based catalysts mainly follows three aspects: (i) increasing the number of Pt active sites;(31) (ii) improving the intrinsic activity of every exposing Pt active sites;(47)(iii) and enhancing the intoxicating behavior of Pt a”