Enhanced Durability of Polymer Electrolyte Membrane Fuel Cells by Functionalized 2D Boron Nitride Nanoflakes

Cited 72 time in webofscience Cited 0 time in scopus
  • Hit : 333
  • Download : 8
We report boron nitride nanoflakes (BNNFs), for the first time, as a nanofiller for polymer electrolyte membranes in fuel cells. Utilizing the intrinsic mechanical strength of two-dimensional (2D) BN, addition of BNNFs even at a marginal content (0.3 wt %) significantly improves mechanical stability of the most representative hydrocarbon-type (HC-type) polymer electrolyte membrane, namely sulfonated poly(ether ether ketone) (sPEEK), during substantial water uptake through repeated wet/dry cycles. For facile processing with BNNFs that frequently suffer from poor dispersion in most organic solvents, we non-covalently functionalized BNNFs with 1-pyrenesulfonic acid (PSA). Besides good dispersion, PSA supports efficient proton transport through its sulfonic functional groups. Compared to bare sPEEK, the composite membrane containing BNNF nanofiller exhibited far improved long-term durability originating from enhanced dimensional stability and diminished chronic edge failure. This study suggests that introduction of properly functionalized 2D BNNFs is an effective strategy in making various HC-type membranes sustainable without sacrificing their original adventurous properties in polymer electrolyte membrane fuel cells.
Publisher
AMER CHEMICAL SOC
Issue Date
2014-05
Language
English
Article Type
Article
Keywords

PROTON-EXCHANGE MEMBRANES; POLY(ETHER ETHER KETONE); THERMAL-CONDUCTIVITY; GRAPHENE SHEETS; MECHANICAL-PROPERTIES; CARBON NANOTUBES; EPOXY COMPOSITES; WATER; NANOCOMPOSITES; COPOLYMERS

Citation

ACS APPLIED MATERIALS & INTERFACES, v.6, no.10, pp.7751 - 7758

ISSN
1944-8244
DOI
10.1021/am5010317
URI
http://hdl.handle.net/10203/189998
Appears in Collection
MS-Journal Papers(저널논문)CBE-Journal Papers(저널논문)EEW-Journal Papers(저널논문)
Files in This Item
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 72 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0