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Sulfonated Polyimide Proton Exchange Membranes with Graphene Oxide show Improved Proton Conductivity, Methanol Crossover Impedance, and Mechanical Properties
Author(s) -
Tseng ChiYung,
Ye YunSheng,
Cheng MingYao,
Kao KueiYu,
Shen WeiChung,
Rick John,
Chen JyhChien,
Hwang BingJoe
Publication year - 2011
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201100366
Subject(s) - materials science , methanol , conductivity , membrane , graphene , oxide , polyimide , ultimate tensile strength , permeability (electromagnetism) , composite material , chemical engineering , proton , proton exchange membrane fuel cell , nanocomposite , nanotechnology , organic chemistry , chemistry , physics , layer (electronics) , quantum mechanics , engineering , metallurgy , biochemistry
Graphene oxide has been utilized to enhance the proton conductivity and mechanical properties and reduce the methanol permeability of polymer exchange membranes. The membranes exhibit dramatic improvements in proton conductivity (490.3%), methanol permeability (a 508.9% decrease in methanol permeability and a near 25‐fold increase in selectivity of proton conductivity to methanol permeability were achieved at 80 °C) and the mechanical properties (134.4% enhancements in tensile strength at 30 °C) with SPI/GO_0.5 wt%.