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Title: Rational design of polyaromatic ionomers for alkaline membrane fuel cells with >1 W cm-2 power density

Journal Article · · Energy & Environmental Science
DOI:https://doi.org/10.1039/C8EE02192A· OSTI ID:1473818
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Rensselaer Polytechnic Inst., Troy, NY (United States). Dept. of Chemistry and Chemical Biology
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Chemical and Biological Engineering and Center for Micro-Engineered Materials (CMEM)

Alkaline membrane fuel cells (AMFCs) show great potential as alternative energy conversion devices to acidic proton exchange membrane fuel cells (PEMFCs). Over the last decade, there has been significant progress in the development of alkaline-stable polyaromatic materials for membrane separators and ionomeric binders for AMFCs. However, the AMFC performance using polyaromatic ionomers is generally poor, ca. a peak power density of <400 mW cm-2. We report a rational design for polyaromatic ionomers which can minimize undesirable phenyl group interaction with hydrogen oxidation catalysts. The AMFC using a newly designed aryl ether-free poly(fluorene) ionomer exhibits a peak power density of 1.46 W cm-2, which is approaching that of Nafion-based PEMFCs. This study further discusses the remaining challenges of high-performing AMFCs.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office (HFTO); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
Grant/Contract Number:
AC52-06NA25396; AC02-05CH11231; FOA-0001478
OSTI ID:
1473818
Alternate ID(s):
OSTI ID: 1473989
Report Number(s):
LA-UR-18-22341
Journal Information:
Energy & Environmental Science, Vol. 11, Issue 11; ISSN 1754-5692
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 188 works
Citation information provided by
Web of Science

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Cited By (7)

Cross‐Linked Spirocyclic Quaternary Ammonium‐Based Anion Exchange Membrane with Tunable Properties for Fuel Cell Applications journal May 2019
Molecular Solar Thermal Storage Enhanced by Hyperbranched Structures journal October 2019
Rapid precipitation-reduction synthesis of carbon-supported silver for efficient oxygen reduction reaction in alkaline solution journal July 2019
Synergistic Mn-Co catalyst outperforms Pt on high-rate oxygen reduction for alkaline polymer electrolyte fuel cells journal April 2019
Hydrophilic microporous membranes for selective ion separation and flow-battery energy storage journal December 2019
Highly stable polysulfone anion exchange membranes incorporated with bulky alkyl substituted guanidinium cations journal January 2019
Ether-free polyfluorenes tethered with quinuclidinium cations as hydroxide exchange membranes journal January 2019

Figures / Tables (10)


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