Highly Durable Metal-Oxides as an Alternative Catalyst Supports for PEFCs

Autor:	Gu-Gon Park, Didem C. Dogan, Sung-Dae Yim, Young-Jun Sohn, Sun-Mi Hwang, Tae-Hyun Yang
Rok vydání:	2013
Předmět:	Metal Materials science visual_art Speech recognition visual_art.visual_art_medium Nanotechnology Catalysis
Zdroj:	ECS Transactions. 58:1843-1847
ISSN:	1938-6737 1938-5862
DOI:	10.1149/05801.1843ecst
Popis:	High surface area Magnèli Phase Titanium Oxides (MPTOs), synthesized by high temperature reduction and mechanical milling of TiO2 as a catalyst support material for a polymer electrolyte fuel cells (PEFCs). Pt as an active metal distributed on the prepared supports by impregnation-reduction method. The catalyst structure and composition of the Pt/HS_MPTO were determined by X-ray diffractometer (XRD), Field Emission Transmission Electron Spectroscopy (FE-TEM) and Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP). The catalytic activity for the oxygen reduction reaction (ORR) and stability against high potential were examined and compared with commercial Pt/C catalyst. The durability of Pt/HS_MPTO catalysts was examined by potential holding at 1.3 V for 24 h. Pt/HS_MPTO catalyst showed nearly no changes in the half-wave potentials representing much higher durability compared to the commercial Pt/C catalysts.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f5680f0870c2ebba953e49f5881be46b https://doi.org/10.1149/05801.1843ecst Zobrazit plný text záznamu