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Title: Understanding Porous Water-Transport Plates in Polymer-ElectrolyteFuel Cells

Authors:
; ;
Publication Date:
Research Org.:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org.:
USDOE. Assistant Secretary for Energy Efficiency andRenewable Energy Hydrogen Fuel Cells and InfrastructureTechnologies
OSTI Identifier:
928870
Report Number(s):
LBNL-62807
R&D Project: 678505; BnR: HI0300000
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Power Sources; Journal Volume: 168
Country of Publication:
United States
Language:
English
Subject:
25

Citation Formats

Weber, Adam Z., Darling, Robert M., and UTC Power. Understanding Porous Water-Transport Plates in Polymer-ElectrolyteFuel Cells. United States: N. p., 2007. Web. doi:10.1016/j.jpowsour.2007.02.078.
Weber, Adam Z., Darling, Robert M., & UTC Power. Understanding Porous Water-Transport Plates in Polymer-ElectrolyteFuel Cells. United States. doi:10.1016/j.jpowsour.2007.02.078.
Weber, Adam Z., Darling, Robert M., and UTC Power. Sat . "Understanding Porous Water-Transport Plates in Polymer-ElectrolyteFuel Cells". United States. doi:10.1016/j.jpowsour.2007.02.078. https://www.osti.gov/servlets/purl/928870.
@article{osti_928870,
title = {Understanding Porous Water-Transport Plates in Polymer-ElectrolyteFuel Cells},
author = {Weber, Adam Z. and Darling, Robert M. and UTC Power},
abstractNote = {},
doi = {10.1016/j.jpowsour.2007.02.078},
journal = {Journal of Power Sources},
number = ,
volume = 168,
place = {United States},
year = {Sat Mar 03 00:00:00 EST 2007},
month = {Sat Mar 03 00:00:00 EST 2007}
}
  • Photovoltaic characteristics, recombination and charge transport properties are investigated. The determined recombination reduction factor can reconcile the supreme device performance in organic solar cells using non-fullerene ITIC acceptor and severe carrier losses in all-polymer devices with P(NDI2OD-T2).
  • Water transport is an important consideration in the optimization of polymer electrolyte fuel cell (PEFC) performance, affecting both internal resistance and cathode polarization losses. Novel experiments are described using neutron radiography to measure water gradient profiles within Nafion{reg_sign} in an operating PEFC. Preliminary neutron intensity gradients show qualitative agreement with the expected response of membrane water content to changes in feed gas humidification and fuel cell current. Previous experimental measurements of similar water gradients have generally relied on integral measurements such as ac impedance spectroscopy which cannot probe details of the gradient within the membrane. This is one of themore » first differential measurements of water gradients within Nafion.« less
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