Multigrain platinum nanowires consisting of oriented nanoparticles anchored on sulfur-doped graphene as a highly active and durable oxygen reduction electrocatalyst

Md Ariful Hoque; Fathy M Hassan; Drew Higgins; Ja-Yeon Choi; Mark Pritzker; Shanna Knights; Siyu Ye; Zhongwei Chen

doi:10.1002/adma.201404426

Multigrain platinum nanowires consisting of oriented nanoparticles anchored on sulfur-doped graphene as a highly active and durable oxygen reduction electrocatalyst

Adv Mater. 2015 Feb 18;27(7):1229-34. doi: 10.1002/adma.201404426. Epub 2014 Nov 22.

Authors

Md Ariful Hoque¹, Fathy M Hassan, Drew Higgins, Ja-Yeon Choi, Mark Pritzker, Shanna Knights, Siyu Ye, Zhongwei Chen

Affiliation

¹ Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute of Sustainable Energy, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada.

PMID: 25417577
DOI: 10.1002/adma.201404426

Abstract

Direct growth of multigrain platinum nanowires on sulfur-doped graphene (PtNW/SG) is reported. The growth mechanism, including Pt nanoparticle nucleation on SG, followed by nanoparticle attachment with orientation along the <111> direction is highlighted. PtNW/SG demonstrates improved Pt mass and specific activity compared with commercial catalysts toward oxygen reduction, in addition to dramatically improved stability through accelerated durability testing.

Keywords: durability; fuel cells; oxygen reduction; platinum nanowire; sulfur-doped graphene.