Fabrication and performance investigation of nanocrystal tungsten nitride supported Pt catalysts for methanol electrooxidation

Autor:	Lin Luo, Shibin Yin, Hongwei Zhang, Fei Huang, Yinghuai Qiang, Zaoxue Yan, Yang Lixiang
Rok vydání:	2013
Předmět:	Aqueous solution Inorganic chemistry General Chemistry Chronoamperometry Catalysis chemistry.chemical_compound chemistry Nanocrystal Chemical engineering Materials Chemistry Methanol Cyclic voltammetry Methanol fuel Tungsten nitride
Zdroj:	New Journal of Chemistry. 37:3976
ISSN:	1369-9261 1144-0546
Popis:	Catalysts with high activity and stability for methanol electrooxidation are crucial for the commercialization of direct methanol fuel cells. In this work, the performance of nanocrystal tungsten nitride hybrid (WN/C) supported Pt catalyst for methanol electrooxidation is reported. X-ray diffraction (XRD) measurements and transmission electron microscopy (TEM) are adopted to investigate the physicochemical properties of WN/C and the prepared catalysts. Cyclic voltammetry, chronopotentiometry and chronoamperometry measurements are employed to study the electrocatalytic properties of the prepared catalysts. The tungsten nitride supported Pt (Pt-WN/C) catalysts exhibit significantly improved performance towards methanol electrooxidation in acidic aqueous solutions in comparison with other catalysts. The reason could predominantly originate from the synergistic effect between WN and Pt in the Pt-WN/C catalysts and the nitrogen-doping effects of the carbon supports, which could be a promising anode catalyst for direct methanol fuel cells.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e2cfdce58edeb02fc57e88418152b7dc https://doi.org/10.1039/c3nj00717k Zobrazit plný text záznamu