RuO2•xH2O-TiO2 as Catalyst Support for PEM Fuel Cells

Autor:	Amod Kumar, Vijay Ramani, Chih-Ping Lo, Guanxiong Wang
Rok vydání:	2011
Předmět:	Materials science Chemical engineering Catalyst support Proton exchange membrane fuel cell Direct-ethanol fuel cell
Zdroj:	ECS Transactions. 41:1249-1255
ISSN:	1938-6737 1938-5862
Popis:	Electrocatalytic activities of Pt supported on RuO2•xH2O-TiO2 and anhydrous RuO2-TiO2 were examined. The electrochemically active surface area (ECSA) of Pt/RuO2•xH2O-TiO2 was found to be less than that of Pt/RuO2-TiO2 (3.2m2/g vs. 16.9m2/g), which suggested that RuO2•xH2O interfered with Pt electrocatalytic activity/accessibility. Pt catalytic activity was recovered when Pt/hydrous RuO2-TiO2 was calcined at 450°C, which led to the conversion of hydrous RuO2-TiO2 to anhydrous RuO2-TiO2 as observed from XRD patterns. The BET surface areas of hydrous RuO2-TiO2 and anhydrous RuO2-TiO2 did not change. Converging evidence from CV, XRD and BET analyses confirmed that hydrous RuO2 exhibited lower Pt catalytic activity/accessibility.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::26ef3c5553baec9271ec6d53319d7f95 https://doi.org/10.1149/1.3635656 Zobrazit plný text záznamu