Effect of assembly pressure on the performance of a bendable polymer electrolyte fuel cell based on a silver nanowire current collector

Title
Effect of assembly pressure on the performance of a bendable polymer electrolyte fuel cell based on a silver nanowire current collector
Authors
유성종박태현장익황정주해이하범고승환Ryan O'Hayre차석원
Keywords
Bendable fuel cell; Silver nanowire; Polydimethylsiloxane; Assembly pressure; Bendable fuel cell simulation model
Issue Date
2017-09
Publisher
Energy
Citation
VOL 134-419
Abstract
This work investigates the effect of assembly pressure on the performance of a bendable polymer electrolyte fuel cell based on silver nanowire current collectors. We define assembly pressure as the compressive stress exerted by the bendable fuel cell flow structure on the membrane electrode assembly. The performance of the bendable fuel cell increases with increasing assembly pressure while the corresponding ohmic and charge transfer resistances of the fuel cell decrease. While in certain circumstances bending can increase fuel cell performance because it increases the assembly pressure internally exerted on the MEA, we also find that deformation of the flow structures upon bending the fuel cell can negatively affect performance due to non-uniform disruptions in the distribution of reactants. We extract the key electrochemical parameters that are most sensitive to assembly pressure and develop a simulation model for bendable fuel cells using these parameters. This model is validated against the experimental data of here and previous studies, thereby showing the feasibility of engineering the bendable fuel cells for various demands.
URI
http://pubs.kist.re.kr/handle/201004/66373
ISSN
0360-5442
Appears in Collections:
KIST Publication > Article
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