Effects of synthesis condition on formation of desired crystal structures of doped-TiO2/carbon composite supports for ORR electrocatalysts

From National Research Council Canada

DOI	Resolve DOI: https://doi.org/10.1016/j.electacta.2012.05.100
Author	Search for: Bing, Yonghong¹; Search for: Neburchilov, Vladimir¹; Search for: Song, Chaojie¹; Search for: Baker, Ryan¹; Search for: Guest, Alan¹; Search for: Ghosh, Dave¹; Search for: Ye, Siyu; Search for: Campbell, Stephen; Search for: Zhang, Jiujun¹
Affiliation	National Research Council of Canada. Energy, Mining and Environment
Format	Text, Article
Subject	Doped-TiO2; Thermal hydrolysis; Hybrid support; Oxygen reduction mass activity; Durability of supports; TiO2 anatase-to-rutile transition; PEM fuel cell
Abstract	The composite supports, (Nb0.07Ti0.93O2)25wt%–C75wt% and (Nb0.07Ti0.93O2)70wt%–C30wt%, as well as their supported Pt–Pd alloy electrocatalysts, 20 wt%Pt0.62Pd0.38/((Nb0.07Ti0.93O2)25wt%–C75wt%)80wt% and 20 wt%Pt0.62Pd0.38/((Nb0.07Ti0.93O2)70wt%–C30wt%)80wt% for oxygen reduction reaction (ORR), are synthesized, respectively, using an acid-water based solution as solvent. The effects of three factors, namely concentration of HCl, the ratio of titanium precursor to solvent, and the ratio of metal-oxide to carbon in the composite support, on the TiO2 anatase-to-rutile transition are investigated in an effort to optimize the supports and their supported catalysts with respect to both ORR catalytic activity and durability. Based on both the high ORR activity and durability, these catalysts should be feasible if used in PEM fuel cells as cathode electrocatalysts.
Publication date	2012-08-30
In	Electrochimica Acta 77 (30 August 2012): 225–231.
Note	Erratum published in volume 103, page 277, July 2013. DOI: 10.1016/j.electacta.2013.05.076
Language	English
Peer reviewed	Yes
Identifier	S0013468612008973
NPARC number	21268735
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Record identifier	2bdd04c5-3529-46f6-9658-eb1dce464848
Record created	2013-11-12
Record modified	2020-04-21

Date modified:: 2025-02-08