skip to main content

Title: Tunable High Performance Cross-Linked Alkaline Anion Exchange Membranes for Fuel Cell Applications

Fuel cells are energy conversion devices that show great potential in numerous applications ranging from automobiles to portable electronics. However, further development of fuel cell components is necessary for them to become commercially viable. One component critical to their performance is the polymer electrolyte membrane, which is an ion conductive medium separating the two electrodes. While proton conducting membranes are well established (e.g., Nafion), hydroxide conducting membranes (alkaline anion exchange membranes, AAEMs) have been relatively unexplored by comparison. Operating under alkaline conditions offers significant efficiency benefits, especially for the oxygen reduction reaction; therefore, effective AAEMs could significantly advance fuel cell technologies. Here we demonstrate the use of ring-opening metathesis polymerization to generate new cross-linked membrane materials exhibiting high hydroxide ion conductivity and good mechanical properties. Cross-linking allows for increased ion incorporation, which, in turn supports high conductivities. This facile synthetic approach enables the preparation of cross-linked materials with the potential to meet the demands of hydrogen-powered fuel cells as well as direct methanol fuel cells.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Cornell Univ., Ithaca, NY (United States)
Publication Date:
OSTI Identifier:
1064853
DOE Contract Number:
SC0001086
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of the American Chemical Society; Journal Volume: 132; Journal Issue: 10; Related Information: Emc2 partners with Cornell University (lead); Lawrence Berkeley National Laboratory
Publisher:
American Chemical Society (ACS)
Research Org:
Energy Frontier Research Centers (EFRC); Energy Materials Center at Cornell (EMC2)
Sponsoring Org:
USDOE SC Office of Basic Energy Sciences (SC-22)
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION catalysis (homogeneous); catalysis (heterogeneous); energy storage (including batteries and capacitors); hydrogen and fuel cells; defects; charge transport; membrane; materials and chemistry by design; synthesis (novel materials); synthesis (self-assembly); synthesis (scalable processing)