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Nafion-sulfonated silica composite membrane for proton exchange membrane fuel cells under operating low humidity condition

Title
Nafion-sulfonated silica composite membrane for proton exchange membrane fuel cells under operating low humidity condition
Authors
Oh, KwangjinKwon, OsungSon, ByungrakLee, Dong-HaShanmugam, Sangaraju
DGIST Authors
Son, Byungrak; Lee, Dong-Ha; Shanmugam, Sangaraju
Issue Date
2019-08
Citation
Journal of Membrane Science, 583, 103-109
Type
Article
Article Type
Article
Author Keyword
Sulfonated silica; Composite membrane; Low relative humidity; Proton conductivity; Fuel cell performance
Keyword
POLYMER ELECTROLYTE MEMBRANES; NANOCOMPOSITE MEMBRANES; NANOPARTICLES; ACID; CONDUCTIVITY; FABRICATION; NANOTUBES; SIZE; COPOLYMERS; STABILITY
ISSN
0376-7388
Abstract
Sulfonated silica, synthesized by using tetraethyl orthosilicate and chlorosulfuric acid through calcination, was used as a filler to create Nafion-SSA composite membranes for applying proton exchange membrane fuel cells under low relative humidity (RH)condition. High water uptake and ion exchange capacity values were observed, and the Nafion-SSA composite membrane showed improved proton conductivity than that of the recast Nafion. The fuel cell operating at 80 °C under 20% RH with Nafion-SSA composite membrane showed 2.8 times higher maximum power density (454 mW cm −2 )and current density (2062 mA cm −2 )in comparison with the recast Nafion (159 mW cm −2 , 734 mA cm −2 ). The thermal stability and mechanical properties of recast Nafion and Nafion-SSA composite membranes were evaluated by TGA and Tensile test. © 2019
URI
http://hdl.handle.net/20.500.11750/9825
DOI
10.1016/j.memsci.2019.04.031
Publisher
Elsevier BV
Related Researcher
  • Author Shanmugam, Sangaraju Advanced Energy Materials Laboratory
  • Research Interests Electrocatalysts for fuel cells; water splitting; metal-air batteries; Polymer electrolyte membranes for fuel cells; flow batteries; Hydrogen generation and utilization
Files:
There are no files associated with this item.
Collection:
Convergence Research Center for Wellness1. Journal Articles
Department of Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles


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