Cerium migration during PEM fuel cell assembly and operation
Abstract
Cerium migration between PEM fuel cell components is influenced by potential-driven mobility, ionic diffusion, and gradients in water content. These factors were investigated in ex situ experiments and in operating fuel cells. Potential-induced migration was measured ex situ in hydrated window cells. Cerium-containing MEAs were also fabricated and tested under ASTs. MEA disassembly and subsequent XRF analysis were used to observe rapid cerium migration during cell assembly and operation. During MEA hot pressing, humidification, and low RH operation at OCV, ionic diffusion causes uniform migration from the membrane into the catalyst layers. During high RH operation at OCV, in-plane cerium gradients arise due to variations in water content. These gradients may diminish the scavenging efficacy of cerium by reducing its proximity to generated radicals.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Delaware, Newark, DE (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Delaware, Newark, DE (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1234248
- Report Number(s):
- LA-UR-15-25324
Journal ID: ISSN 1938-6737
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ECS Transactions (Online)
- Additional Journal Information:
- Journal Name: ECS Transactions (Online); Journal Volume: 69; Journal Issue: 17; Journal ID: ISSN 1938-6737
- Publisher:
- Electrochemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 08 HYDROGEN; Energy Sciences; Fuel Cell
Citation Formats
Baker, Andrew M., Torraco, Dennis, Judge, Elizabeth J., Spernjak, Dusan, Mukundan, Rangachary, Borup, Rod L., Advani, Suresh G., and Prasad, Ajay K. Cerium migration during PEM fuel cell assembly and operation. United States: N. p., 2015.
Web. doi:10.1149/06917.1009ecst.
Baker, Andrew M., Torraco, Dennis, Judge, Elizabeth J., Spernjak, Dusan, Mukundan, Rangachary, Borup, Rod L., Advani, Suresh G., & Prasad, Ajay K. Cerium migration during PEM fuel cell assembly and operation. United States. https://doi.org/10.1149/06917.1009ecst
Baker, Andrew M., Torraco, Dennis, Judge, Elizabeth J., Spernjak, Dusan, Mukundan, Rangachary, Borup, Rod L., Advani, Suresh G., and Prasad, Ajay K. Mon .
"Cerium migration during PEM fuel cell assembly and operation". United States. https://doi.org/10.1149/06917.1009ecst. https://www.osti.gov/servlets/purl/1234248.
@article{osti_1234248,
title = {Cerium migration during PEM fuel cell assembly and operation},
author = {Baker, Andrew M. and Torraco, Dennis and Judge, Elizabeth J. and Spernjak, Dusan and Mukundan, Rangachary and Borup, Rod L. and Advani, Suresh G. and Prasad, Ajay K.},
abstractNote = {Cerium migration between PEM fuel cell components is influenced by potential-driven mobility, ionic diffusion, and gradients in water content. These factors were investigated in ex situ experiments and in operating fuel cells. Potential-induced migration was measured ex situ in hydrated window cells. Cerium-containing MEAs were also fabricated and tested under ASTs. MEA disassembly and subsequent XRF analysis were used to observe rapid cerium migration during cell assembly and operation. During MEA hot pressing, humidification, and low RH operation at OCV, ionic diffusion causes uniform migration from the membrane into the catalyst layers. During high RH operation at OCV, in-plane cerium gradients arise due to variations in water content. These gradients may diminish the scavenging efficacy of cerium by reducing its proximity to generated radicals.},
doi = {10.1149/06917.1009ecst},
journal = {ECS Transactions (Online)},
number = 17,
volume = 69,
place = {United States},
year = {Mon Sep 14 00:00:00 EDT 2015},
month = {Mon Sep 14 00:00:00 EDT 2015}
}
Works referencing / citing this record:
Cerium Oxide Decorated Polymer Nanofibers as Effective Membrane Reinforcement for Durable, High‐Performance Fuel Cells
journal, December 2016
- Breitwieser, Matthias; Klose, Carolin; Hartmann, Armin
- Advanced Energy Materials, Vol. 7, Issue 6
Chemical stability enhancement of crown ether grafted sulfonated poly(arylene ether ketone) fuel cell membrane by cerium ion fixation
journal, November 2018
- Park, Junghwa; Park, Yongman; Kim, Dukjoon
- Journal of Polymer Science Part A: Polymer Chemistry, Vol. 57, Issue 2
Rational Design of Ultrathin Gas Barrier Layer via Reconstruction of Hexagonal Boron Nitride Nanoflakes to Enhance the Chemical Stability of Proton Exchange Membrane Fuel Cells
journal, September 2019
- Lee, Seongsoo; Jang, Wonseok; Kim, Mansu
- Small, Vol. 15, Issue 44
Dual sulfonated poly(arylene ether ketone) membrane grafted with 15-crown-5-ether for enhanced proton conductivity and anti-oxidation stability
journal, January 2019
- Vo, Dinh Cong Tinh; Nguyen, Minh Dat Thinh; Kim, Dukjoon
- Molecular Systems Design & Engineering, Vol. 4, Issue 4
Accelerated Stress Testing of Fuel Cell Membranes Subjected to Combined Mechanical/Chemical Stressors and Cerium Migration
journal, January 2018
- Lai, Yeh-Hung; Rahmoeller, Kenneth M.; Hurst, James H.
- Journal of The Electrochemical Society, Vol. 165, Issue 6
Predicting Membrane Lifetime with Cerium Oxide in Heavy Duty Fuel Cell Systems
journal, January 2018
- Macauley, Natalia; Lauritzen, Michael; Knights, Shanna
- Journal of The Electrochemical Society, Vol. 165, Issue 10
Contaminant Cation Effect on Oxygen Transport through the Ionomers of Polymer Electrolyte Membrane Fuel Cells
journal, January 2019
- Braaten, Jonathan P.; Xu, Xiaomin; Cai, Yun
- Journal of The Electrochemical Society, Vol. 166, Issue 16