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Tunable nanochannels through graphene oxide/polymer core-shell nanosheets for enhanced proton conductivity
作者:Guangwei He, Chaoyi Chang, Mingzhao Xu, Shen Hu, Lingqiao Li, Jing Zhao, Zhen Li, Zongyu Li, Yonghen
關鍵字:proton exchange membrane, functionalized graphene, nanochannel, proton conductivity
論文來源:期刊
具體來源:Adv Funct Mater, 25 (48), 7502-7511 (2015). DOI: 10.1002/adfm.201503229
發表時間:2015年
Simultaneous manipulation of the topological structure and chemical structure of the ionic nanochanels within solid electrolyte has been proved a crucial but challenging task for the rational design of high-performance electrochemical devices including proton exchange membrane fuel cell. Herein, we present a novel approach to the construction of tunable nanochannels via direct assembly of graphene oxide (GO)/polymer core-shell nanosheets. Through molecular-level engineering of the GO/polymer nanosheets, the ordered, continuous nanochannels, interconnected hydrogen-bond networks and favorable water environment of the ionic nanochannels can be facilely created. The resultant membrane exhibits a proton conductivity of 32 mS cm-1 at 51% RH, surpassing the state-of-the-art Nafion membrane and all the reported GO based materials.
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