Bulletin of materials science | |
Pt�?�Ru decorated self-assembled TiO2�?�carbon hybrid nanostructure for enhanced methanol electrooxidation | |
A K Shukla1  S Pitchumani2  K G Nishanth2  P Sridhar2  | |
[1] Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India$$Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, IndiaSolid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India$$;CSIR-Central Electrochemical Research Institute - Madras Unit, CSIR Madras Complex, Chennai 600 113, India$$CSIR-Central Electrochemical Research Institute - Madras Unit, CSIR Madras Complex, Chennai 600 113, IndiaCSIR-Central Electrochemical Research Institute - Madras Unit, CSIR Madras Complex, Chennai 600 113, India$$ | |
关键词: DMFC; anode catalyst; methanol oxidation; Ptâ€�?�Ru; accelerated durability test.; | |
DOI : | |
学科分类:材料工程 | |
来源: Indian Academy of Sciences | |
【 摘 要 】
Porous titanium oxide�?�carbon hybrid nanostructure (TiO2�?�C) with a specific surface area of 350 m2/g and an average pore-radius of 21.8 �? is synthesized via supramolecular self-assembly with an in situ crystallization process. Subsequently, TiO2�?�C supported Pt�?�Ru electro-catalyst (Pt�?�Ru/TiO2�?�C) is obtained and investigated as an anode catalyst for direct methanol fuel cells (DMFCs). X-ray diffraction, Raman spectroscopy and transmission electron microscopy (TEM) have been employed to evaluate the crystalline nature and the structural properties of TiO2�?�C. TEM images reveal uniform distribution of Pt�?�Ru nanoparticles (�?Pt−Ru = 1.5�??3.5 nm) on TiO2�?�C. Methanol oxidation and accelerated durability studies on Pt�?�Ru/TiO2�?�C exhibit enhanced catalytic activity and durability compared to carbon-supported Pt�?�Ru. DMFC employing Pt�?�Ru/TiO2�?�C as an anode catalyst delivers a peak-power density of 91 mW/cm2 at 65 °C as compared to the peak-power density of 60 mW/cm2 obtained for the DMFC with carbon-supported Pt�?�Ru anode catalyst operating under similar conditions.
【 授权许可】
Unknown
【 预 览 】
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