Open AccessHighly Durable Metal-Oxides as an Alternative Catalyst Supports for PEFCs
Author(s) -
Didem C. Dogan,
Sun-Mi Hwang,
SungDae Yim,
Young-Jun Sohn,
TaeHyun Yang,
GuGon Park
Publication year - 2013
Publication title -
ecs transactions
Language(s) - English
Resource type - Journals
eISSN - 1938-6737
pISSN - 1938-5862
DOI - 10.1149/05801.1843ecst
Subject(s) - catalysis , diffractometer , materials science , titanium , inductively coupled plasma , metal , electrolyte , durability , chemical engineering , catalyst support , analytical chemistry (journal) , scanning electron microscope , chemistry , electrode , metallurgy , plasma , composite material , organic chemistry , engineering , physics , quantum mechanics
High surface area Magnèli Phase Titanium Oxides (MPTOs), synthesized by high temperature reduction and mechanical milling of TiO 2 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.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom