Polyol Synthesis of Ruthenium Selenide Catalysts for Oxygen Reduction Reaction

Bulletin of the Korean chemical society

Seong Ihl Woo¹  Ki Rak Lee¹ 

关键词: Ruthenium-chalcogenide;    Fuel cell;    Oxygen reduction reaction;    Electro-catalysts;    Methanol tolerant property;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Ruthenium catalysts modified by selenium have been introduced as alternative materials to Pt in Direct methanol fuel cells (DMFCs). RuSe nano-particles were synthesized on the Vulcan XC72R carbon supports via polyol method. The prepared catalysts were electrochemically and physically characterized by cyclic voltammetry (CV,) linear sweep voltammetry, methanol tolerance test, X-ray diffraction (XRD), Transmission electron microscopy (TEM), Energydispersive Spectrometer (EDS) and X-ray photoelectron spectroscopy (XPS). Increasing the Se concentration up to 20 at % increased the electro-catalytic activity for the oxygen reduction. By increasing Se amount, Ru metallic form on the surface was increased. The Ru80Se20/C catalysts showed the highest oxygen reduction reaction (ORR) activity and outstanding methanol tolerant property in half cell tests as well as single cell test.

【 授权许可】

Unknown