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Anchoring Water Soluble Phosphotungstic Acid by Hybrid Fillers to Construct Three-Dimensional Proton Transport Networks
He, Shaojian1; Lu, Zhongrui1; Dai, Wenxu1; Yang, Kangning1; Xue, Yang2; Jia, Xiaoyang1; Lin, Jun1
2021-07-01
Source PublicationMEMBRANES
Volume11Issue:7Pages:11
Abstract

Phosphotungstic acid (HPW)-filled composite proton exchange membranes possess high proton conductivity under low relative humidity (RH). However, the leaching of HPW limits their wide application. Herein, we propose a novel approach for anchoring water soluble phosphotungstic acid (HPW) by polydopamine (PDA) coated graphene oxide and halloysite nanotubes (DGO and DHNTs) in order to construct hybrid three-dimensional proton transport networks in a sulfonated poly(ether ether ketone) (SPEEK) membrane. The introduction of PDA on the surfaces of the hybrid fillers could provide hydroxyl groups and secondary amine groups to anchor HPW, resulting in the uniform dispersion of HPW in the SPEEK matrix. The SPEEK/DGO/DHNTs/HPW (90/5/5/60) composite membrane exhibited higher water uptake and much better conductivity than the SPEEK membrane at low relative humidity. The best conductivity reached wass 0.062 S cm(-1) for the composite membrane, which is quite stable during the water immersion test.

KeywordProton Transport Network Low Relative Humidity Stable Conductivity Polydopamine Graphene Oxide Halloysite Nanotube Phosphotungstic Acid
DOI10.3390/membranes11070536
Language英语
WOS KeywordPoly(Ether Ether Ketone) ; Thermal-conductivity ; Membranes ; Graphene ; Performance ; Nanosheets ; Nanotubes ; Solvent
Funding ProjectNational Natural Science Foundation of China[51773058] ; National Natural Science Foundation of China[51973057]
WOS Research AreaBiochemistry & Molecular Biology ; Chemistry ; Engineering ; Materials Science ; Polymer Science
WOS SubjectBiochemistry & Molecular Biology ; Chemistry, Physical ; Engineering, Chemical ; Materials Science, Multidisciplinary ; Polymer Science
Funding OrganizationNational Natural Science Foundation of China
WOS IDWOS:000676642200001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/49486
Collection中国科学院过程工程研究所
Corresponding AuthorXue, Yang; Lin, Jun
Affiliation1.North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Beijing 102206, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
He, Shaojian,Lu, Zhongrui,Dai, Wenxu,et al. Anchoring Water Soluble Phosphotungstic Acid by Hybrid Fillers to Construct Three-Dimensional Proton Transport Networks[J]. MEMBRANES,2021,11(7):11.
APA He, Shaojian.,Lu, Zhongrui.,Dai, Wenxu.,Yang, Kangning.,Xue, Yang.,...&Lin, Jun.(2021).Anchoring Water Soluble Phosphotungstic Acid by Hybrid Fillers to Construct Three-Dimensional Proton Transport Networks.MEMBRANES,11(7),11.
MLA He, Shaojian,et al."Anchoring Water Soluble Phosphotungstic Acid by Hybrid Fillers to Construct Three-Dimensional Proton Transport Networks".MEMBRANES 11.7(2021):11.
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