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An in–situ Organic‐Inorganic Hybrid Methanol‐Permeation resistant PEM with Great Mechanical Stability Retention Capacity
Author(s) -
Li Jing,
Xiong Jie,
Ma Liying,
Xu Guoxiao,
Jiang Yao,
Luo Xingying,
Cai Weiwei
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201601875
Subject(s) - membrane , chemical engineering , conductivity , materials science , polyamide , nafion , methanol , ultimate tensile strength , proton exchange membrane fuel cell , permeation , nanocomposite , composite material , chemistry , organic chemistry , electrode , electrochemistry , biochemistry , engineering
Abstract An in ‐situ organic‐inorganic hybrid strategy is proposed for proton exchange membrane (PEM) preparation based on a hyperbranched polyamide proton conductive macromolecule. With similar effects on proton conductivity and methanol permeability as that of the conventional organic‐inorganic hybrid strategy, the in ‐situ organic‐inorganic hybrid one showed much better retention capacity on mechanical stability. With trace amount of TiO 2 nanoparticle, acting as a model inorganic filler in this work, methanol permeability of a previously developed macromolecular polyamide proton conductor, which already showed higher proton conductivity and methanol resistivity than the commercial Nafion membrane, is further reduced by ca. 20 % while the proton conductivity is only slightly decayed. More importantly, mechanical strength of the in ‐situ hybrid membrane remained almost the same as that of the original polymeric membrane while the conventional hybrid strategy would lead to a 25 % tensile strength loss.