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Title: Enhanced Water Management of Polymer Electrolyte Fuel Cells with Additive-Containing Microporous Layers

Journal Article · · ACS Applied Energy Materials
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [2];  [2];  [3];  [3]; ORCiD logo [4];  [5];  [5];  [6];  [4]; ORCiD logo [4]; ORCiD logo [7]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Tufts Univ., Medford, MA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  7. Tufts Univ., Medford, MA (United States); Univ. of California, Irvine, CA (United States)

This work describes the performance improvement of a polymer electrolyte fuel cell with a novel class of microporous layers (MPLs) that incorporates hydrophilic additives: one with 30 μm aluminosilicate fibers and another with multiwalled carbon nanotubes with a domain size of 5 μm. Higher current densities at low potentials were observed for cells with the additive-containing MPLs compared to a baseline cell with a conventional MPL, which correlate with improvements in water management. This is also observed for helium and oxygen experiments and by the lower amount of liquid water in the cell, as determined by neutron radiography. Furthermore, carbon-nanotube-containing MPLs demonstrates improved durability compared to the baseline MPL. Microstructural analyses including nanotomography demonstrate that the filler material in both the additive-containing MPLs provide preferential transport pathways for liquid water, which correlate with ex situ measurements. The main advantage provided by these MPLs is improved liquid-water removal from the cathode catalyst layer, resulting in enhanced oxygen delivery to the electrocatalyst sites.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Fuel Cell Technologies Program
Grant/Contract Number:
AC52-06NA25396; AC02-06CH11357; AC05-00OR22725; AC02-05CH11231
OSTI ID:
1480048
Alternate ID(s):
OSTI ID: 1493735; OSTI ID: 1564215; OSTI ID: 1571911; OSTI ID: 1968459
Report Number(s):
LA-UR-18-26360
Journal Information:
ACS Applied Energy Materials, Vol. 1, Issue 11; ISSN 2574-0962
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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Cited By (1)

Interaction of Pore Size and Hydrophobicity/Hydrophilicity for Improved Oxygen and Water Transport through Microporous Layers journal January 2019

Figures / Tables (9)