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Preparation of supported PtRu/C electrocatalyst for direct methanol fuel cells |
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| Authors: | Luhua Jiang Xinsheng Zhao Shiyou Yan Guoxiong Wang Qin Xin |
| Affiliation: | a Direct Alcohol Fuel Cell Laboratory, Dalian Institute of Chemical Physics, Graduate School of the Chinese Academy of Sciences, CAS, China b State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Graduate School of the Chinese Academy of Sciences, CAS, China c Headwater NanoKinetix Inc., USA |
| Abstract: | In this work, high-surface supported PtRu/C were prepared with Ru(NO)(NO3)3 and Pt(H2NCH2CH2NH2)2]Cl2 as the precursors and hydrogen as a reducing agent. XRD and TEM analyses showed that the PtRu/C catalysts with different loadings possessed small and homogeneous metal particles. Even at high metal loading (40 wt.% Pt, 20 wt.% Ru) the mean metal particle size is less than 4 nm. Meanwhile, the calculated Pt crystalline lattice parameter and Pt (2 2 0) peak position indicated that the geometric structure of Pt was modified by Ru atoms. Among the prepared catalysts, the lattice parameter of 40-20 wt.% PtRu/C contract most. Cyclic voltammetry (CV), chronoamperometry (CA), CO stripping and single direct methanol fuel cell tests jointly suggested that the 40-20 wt.% PtRu/C catalyst has the highest electrochemical activity for methanol oxidation. |
| Keywords: | Direct methanol fuel cell Electrocatalyst Supported catalysts PtRu CO stripping |
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