Integrated High-Efficiency Pt/Carbon Nanotube Arrays for PEM Fuel Cells

Zhang, Weimin, Minett, Andrew I, Gao, Mei, Zhao, Jie, Razal, Joselito M, Wallace, Gordon G, Romeo, Tony and Chen, Jun 2011, Integrated High-Efficiency Pt/Carbon Nanotube Arrays for PEM Fuel Cells, Advanced Energy Materials, vol. 1, no. 4, pp. 671-677, doi: 10.1002/aenm.201100092.

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Title Integrated High-Efficiency Pt/Carbon Nanotube Arrays for PEM Fuel Cells
Author(s) Zhang, Weimin
Minett, Andrew I
Gao, Mei
Zhao, Jie
Razal, Joselito MORCID iD for Razal, Joselito M
Wallace, Gordon G
Romeo, Tony
Chen, Jun
Journal name Advanced Energy Materials
Volume number 1
Issue number 4
Start page 671
End page 677
Total pages 7
Publisher Wiley-VCH Verlag
Place of publication Weinheim, Germany
Publication date 2011
ISSN 1614-6832
Keyword(s) Electrocatalyst
Carbon nanotube arrays
Fuel cells
Summary A facile strategy to deposit Pt nanoparticles with various metal-loading densities on vertically aligned carbon nanotube (ACNT) arrays as electrocatalysts for proton exchange membrane (PEM) fuel cells is described. The deposition is achieved by electrostatic adsorption of the Pt precursor on the positively charged polyelectrolyte functionalized ACNT arrays and subsequent reduction by L-ascorbic acid. The application of the aligned electrocatalysts in fuel cells is realized by transferring from a quartz substrate to nafion membrane using a hot-press procedure to fabricate the membrane electrode assembly (MEA). It is shown that the MEA with vertically aligned structured electrocatalysts provides better Pt utilization than that with Pt on conventional carbon nanotubes or carbon black, resulting in higher fuel cell performance.
Language eng
DOI 10.1002/aenm.201100092
Field of Research 109999 Technology not elsewhere classified
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2011, WILEY-VCH Verlag
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Document type: Journal Article
Collection: Faculty of Science, Engineering and Built Environment
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