Jump to main content
Jump to site search


Hierarchically Ordered Arrays with Platinum Coated PANI Nanowires for Highly Efficient Fuel Cell Electrode

Abstract

Fabrication of novel electrode architecture with multi-scaled orderliness is an effective strategy to enhance Pt utilization and decrease mass transport polarization loss for proton exchange membrane fuel cells (PEMFCs). Here we report a hierarchially well-defined electrode with Pt nanowhiskers on aligned nanowires by magnetron sputtering method. With the crystallographically preferential growth of Pt (111) facets, associating with the electron modification effects of PANI on Pt nanowhiskers, the electrode achieves outstanding electrochemical activity towards oxygen reduction reaction (ORR) with a 2.19-fold enhancement for specific activity and the similar mass specific activity at 0.9 V (vs. RHE), respectively, compared to the state-of-art Pt-C electrode. PEMFC fabricated with the Pt-PANI-GDL electrode shows excellent performance with the peak power density of 542 mW cm-2, and cathode mass specific power density of 5.7 W mgPt-1, which is 39% greater than PEMFC equipped with the Pt-C electrode for the enhanced electrochemical activity and mass transport.

Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Mar 2017, accepted on 24 May 2017 and first published on 24 May 2017


Article type: Paper
DOI: 10.1039/C7TA02500A
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
  •   Request permissions

    Hierarchically Ordered Arrays with Platinum Coated PANI Nanowires for Highly Efficient Fuel Cell Electrode

    R. Sun, Z. Xia, L. Shang, X. Fu, H. Li, S. Wang and G. Sun, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA02500A

Search articles by author

Spotlight

Advertisements