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On the role of the silica-containing catalyst layer for proton exchange membrane fuel cells

Title
On the role of the silica-containing catalyst layer for proton exchange membrane fuel cells
Author
이성철
Keywords
PEMFC; Relative humidity; Silica; Catalyst layer; Wettability; POLYMER ELECTROLYTE MEMBRANES; LOW HUMIDITY; CONDUCTION; MODEL
Issue Date
2014-04
Publisher
PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Citation
Energy , Vol.68 [APR 15 2014] , p794-800
Abstract
The performance of a PEMFC (proton exchange membrane fuel cell) severely decreases as the relative humidity decreases. Herein, we present size-controlled SiO2 (silica) nanoparticles in the CLs (catalyst layers) to provide sufficient water to the Nafion ionomer. It is found that the microstructure of the agglomerated CL is notably improved using the SiO2 particles with smaller diameter. In addition, as the SiO2 particle diameter decreases, both the electrochemical surface area and ohmic performance are improved, as well as the wettability, for the PE
URI
http://www.sciencedirect.com/science/article/pii/S036054421400262Xhttp://hdl.handle.net/20.500.11754/50046
ISSN
0360-5442; 1873-6785
DOI
10.1016/j.energy.2014.03.009
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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