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Durability of Pt/C and Pt/MC‐PEDOT Catalysts under Simulated Start‐Stop Cycles in Polymer Electrolyte Fuel Cells
Author(s) -
Tintula K. K.,
Jalajakshi A.,
Sahu A. K.,
Pitchumani S.,
Sridhar P.,
Shukla A. K.
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.201200158
Subject(s) - pedot:pss , materials science , cyclic voltammetry , catalysis , electrolyte , chemical engineering , platinum , cathode , anode , electrochemistry , corrosion , mesoporous material , carbon fibers , polymer , composite number , composite material , electrode , chemistry , organic chemistry , engineering
A composite of mesoporous carbon (MC) with poly(3,4‐ethylenedioxythiophene) (PEDOT) is studied as catalyst support for platinum nanoparticles. The durability of commercial Pt/carbon and Pt/MC‐PEDOT as cathode catalyst is investigated by invoking air‐fuel boundary at the anode side so as to foster carbon corrosion at the cathode side of a polymer electrolyte fuel cell (PEFC). Pt/MC‐PEDOT shows higher resistance to carbon corrosion in relation to Pt/C. Electrochemical techniques such as cyclic voltammetry (CV) and impedance measurements are used to evaluate the extent of degradation in the catalyst layer. It is surmised that the resistance of MC‐PEDOT as catalyst support toward electrochemical oxidation makes Pt/MC‐PEDOT a suitable and stable cathode catalyst for PEFCs.