Premium
Graphene and Functionalized Graphene Supported Platinum Catalyst for PEMFC
Author(s) -
Ghosh A.,
Basu S.,
Verma A.
Publication year - 2013
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.201300039
Subject(s) - graphene , platinum , catalysis , materials science , exfoliation joint , cyclic voltammetry , graphite , proton exchange membrane fuel cell , electrochemistry , chemical engineering , carbon fibers , catalyst support , inorganic chemistry , electrode , nanotechnology , chemistry , composite material , organic chemistry , composite number , engineering
The graphene was synthesized by chemical oxidation followed by thermal exfoliation of natural graphite. The functionalized graphene (FG) was prepared by chemical treatment of the synthesized graphene. The as‐synthesized graphene and FG were characterized and used as Pt support materials. The 20 wt.% Pt/G and 20 wt.% Pt/FG catalysts were prepared by precipitation method. The prepared catalysts were characterized for particle size using X‐ray diffraction, surface morphology, electrochemical performance, and stability using cyclic voltammetry. The electrochemical surface area of the FG supported platinum catalyst was found to be more than 45% as compared to the commercial carbon supported platinum catalyst. The stability of the developed catalyst (Pt/G and Pt/FG) was significantly higher than the commercial Pt/C. The membrane electrode assembly was developed using the catalysts and tested in a PEMFC. The maximum power densities of the fuel cell were found to be 314, 426, and 455 mW cm –2 using Pt/C, Pt/G, and Pt/FG, respectively.