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Tunable Nanochannels along Graphene Oxide/Polymer Core–Shell Nanosheets to Enhance Proton Conductivity
Author(s) -
He Guangwei,
Chang Chaoyi,
Xu Mingzhao,
Hu Shen,
Li Lingqiao,
Zhao Jing,
Li Zhen,
Li Zongyu,
Yin Yongheng,
Gang Mingyue,
Wu Hong,
Yang Xinlin,
Guiver Michael D.,
Jiang Zhongyi
Publication year - 2015
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201503229
Subject(s) - materials science , graphene , oxide , membrane , nafion , polymer , nanotechnology , electrolyte , electrochemistry , polymerization , conductivity , chemical engineering , ionic conductivity , proton transport , proton exchange membrane fuel cell , proton , electrode , composite material , chemistry , genetics , engineering , metallurgy , biology , physics , quantum mechanics
Simultaneous manipulation of topological and chemical structures to induce ionic nanochannel formation within solid electrolytes is a crucial but challenging task for the rational design of high‐performance electrochemical devices including proton exchange membrane fuel cell. Herein, a novel generic approach is presented for the construction of tunable ion‐conducting nanochannels via direct assembly of graphene oxide (GO)/poly(phosphonic acid) core–shell nanosheets prepared by surface‐initiated precipitation polymerization. Using this simple and rapid approach to engineer GO/polymer nanosheets at the molecular‐level, ordered and continuous nanochannels with interconnected hydrogen‐bonded networks having a favorable water environment can be created. The resulting membranes exhibit proton conductivities up to 32 mS cm −1 at 51% relative humidity, surpassing state‐of‐the‐art Nafion membrane and all previously reported GO‐based materials.