NDLI: Durability of Pt/MWCNT Nanocatalyst in High Temperature H3PO4/PBI PEMFC

Content Provider	Semantic Scholar
Author	Almoora, K. Bjerruma, N. J. Buazarand, F. Jensen, Jens Oluf Khaledib, H. Lia, Quan Steenbergc, T.
Copyright Year	2010
Abstract	The durability of Pt/MWCNT nanocatalyst was scrutinized by a series of constant life tests (11000 cycle operation) of single proton exchange membrane fuel cell (PEMFC) with phosphoric acid doped PBI (H3PO4/PBI) membranes at high temperature. The tested anode and cathode catalysts were analyzed by transmission electron microscopy (TEM) and X-ray diffraction (XRD) to determine the morphology degree of electrocatalyst agglomeration. The XRD results showed that the Pt nanoparticle (Nps) size increased from 2.2 to 6.3 and 9.4 nm before and after single cell life tests for anode and cathode, respectively. The energy dispersive X-ray established the platinum deposition on supporting material. Above results indicated that the agglomeration of Pt Nps should be responsible for the ESA loss of Pt/MWCNT electrocatalyst but not membrane degradation. The further analyses on TEM data suggested that growth of platinum particles occurred via non-spherical shape mechanism on carbon at the nanometer scale.
Starting Page	387
Ending Page	390
Page Count	4
File Format	PDF HTM / HTML
Volume Number	1
Alternate Webpage(s)	http://karin.fq.uh.cu/~lmc/TechConnect/Nanotech2010/pdf/1331.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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