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Title: Impacts of catalyst nanolayers on water permeation and swelling of polymer electrolyte membranes

Abstract

Polymer electrolyte membranes with catalyst layers are the most crucial components of proton exchange membrane (PEM) electrolyzer cells and fuel cells. Their water permeation and swelling behavior significantly impact the proton transport and performance in energy conversion devices. In this study, water permeations and swelling properties of Nafion membranes with different platinum (Pt) nanolayers under different conditions are investigated. Visualization results demonstrate the entire swelling process of Pt-coated Nafion membranes and reveal water transport in Nafion membranes and breakage of the Pt nanolayer. The water permeation of Nafion membranes with a 17 nm Pt nanolayer coating reduces from 40 to less than 20 umol min-1 cm-2 at 80 degrees C and 70 kPa differential pressure. The water permeation of Nafion membranes with a 36 nm Pt coating is slightly lower than one with a 17 nm Pt coating due to higher transport resistance through the thicker Pt nanolayer and smaller cracks on the Pt nanolayer. Nevertheless, the water permeation of Nafion membranes with Pt nanolayers is still in a good range for proton transport applications, demonstrating the feasibility of Pt or other metal coating on Nafion membranes as catalysts or substrates in PEM-based energy devices.

Authors:
 [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [2];  [3]; ORCiD logo [3]; ORCiD logo [3];  [4]; ORCiD logo [1]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Fuel Cell Technologies Program; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Fuel Cell Technologies Office
OSTI Identifier:
1580572
Alternate Identifier(s):
OSTI ID: 1577935; OSTI ID: 1708842
Report Number(s):
NREL/JA-5900-75719
Journal ID: ISSN 0378-7753; MainId:14080;UUID:315c5343-b725-ea11-9c2f-ac162d87dfe5;MainAdminID:2560
Grant/Contract Number:  
AC36-08GO28308; AC05-00OR22725; EE0008426; FE0011585
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 448; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; water permeation; polymer electrolyte membrane; platinum coating; water electrolyzer; swelling behavior

Citation Formats

Yang, Gaoqiang, Yu, Shule, Mo, Jingke, Li, Yifan, Kang, Zhenye, Bender, Guido, Pivovar, Bryan S., Green, Johney B., Cullen, David A., and Zhang, Feng-Yuan. Impacts of catalyst nanolayers on water permeation and swelling of polymer electrolyte membranes. United States: N. p., 2019. Web. https://doi.org/10.1016/j.jpowsour.2019.227582.
Yang, Gaoqiang, Yu, Shule, Mo, Jingke, Li, Yifan, Kang, Zhenye, Bender, Guido, Pivovar, Bryan S., Green, Johney B., Cullen, David A., & Zhang, Feng-Yuan. Impacts of catalyst nanolayers on water permeation and swelling of polymer electrolyte membranes. United States. https://doi.org/10.1016/j.jpowsour.2019.227582
Yang, Gaoqiang, Yu, Shule, Mo, Jingke, Li, Yifan, Kang, Zhenye, Bender, Guido, Pivovar, Bryan S., Green, Johney B., Cullen, David A., and Zhang, Feng-Yuan. Tue . "Impacts of catalyst nanolayers on water permeation and swelling of polymer electrolyte membranes". United States. https://doi.org/10.1016/j.jpowsour.2019.227582. https://www.osti.gov/servlets/purl/1580572.
@article{osti_1580572,
title = {Impacts of catalyst nanolayers on water permeation and swelling of polymer electrolyte membranes},
author = {Yang, Gaoqiang and Yu, Shule and Mo, Jingke and Li, Yifan and Kang, Zhenye and Bender, Guido and Pivovar, Bryan S. and Green, Johney B. and Cullen, David A. and Zhang, Feng-Yuan},
abstractNote = {Polymer electrolyte membranes with catalyst layers are the most crucial components of proton exchange membrane (PEM) electrolyzer cells and fuel cells. Their water permeation and swelling behavior significantly impact the proton transport and performance in energy conversion devices. In this study, water permeations and swelling properties of Nafion membranes with different platinum (Pt) nanolayers under different conditions are investigated. Visualization results demonstrate the entire swelling process of Pt-coated Nafion membranes and reveal water transport in Nafion membranes and breakage of the Pt nanolayer. The water permeation of Nafion membranes with a 17 nm Pt nanolayer coating reduces from 40 to less than 20 umol min-1 cm-2 at 80 degrees C and 70 kPa differential pressure. The water permeation of Nafion membranes with a 36 nm Pt coating is slightly lower than one with a 17 nm Pt coating due to higher transport resistance through the thicker Pt nanolayer and smaller cracks on the Pt nanolayer. Nevertheless, the water permeation of Nafion membranes with Pt nanolayers is still in a good range for proton transport applications, demonstrating the feasibility of Pt or other metal coating on Nafion membranes as catalysts or substrates in PEM-based energy devices.},
doi = {10.1016/j.jpowsour.2019.227582},
journal = {Journal of Power Sources},
number = ,
volume = 448,
place = {United States},
year = {2019},
month = {12}
}