Molecular-Level Hybridization of Nafion with Quantum Dots for Highly Enhanced Proton Conduction

Wu W, Li Y, Liu J, Wang J, He Y, Davey K, Qiao SZ (2018)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2018

Journal

Advanced Materials Wiley-VCH Verlag

Publisher: Wiley-VCH Verlag

Book Volume: 30

Article Number: 1707516

Journal Issue: 16

DOI: 10.1002/adma.201707516

Abstract

Nanophase-separated membranes hold promise for fast molecule or ion transfer. However, development and practical application are significantly hindered by both the difficulty of chemical modification and nanophase instability. This can be addressed by organic–inorganic hybridization of functional fillers with a precise distribution in specific nanophase. Here, a molecular-level hybridization for nanophase-separated Nafion using 2–5 nm quantum dots (QDs) as a new smart filler is demonstrated. Two kinds of QDs are prepared and used: hydrophilic polymer-like QDs (PQDs) and hydrophobic graphene oxide QDs (GQDs). Because of selective interactions, QDs offer advantages of matched structural size and automatic recognition with the nanophase. A distinctive synthesis of subordinate-assembly, in which QDs are driven by the self-assembly of Nafion affinity chains, is reported. This results in a precise distribution of QDs in the ionic, or backbone, nanophases of Nafion. The resulting PQDs in the ionic nanophase significantly increase membrane proton conduction and device output-power without loss of mechanical stability. This is difficult to realize with conventional fillers. The GQDs in the backbone nanophase reduce the crystallinity and significantly augment membrane water uptake and swelling capacities. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Authors with CRIS profile

Yakun He Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

University of Adelaide AU Australia (AU) Zhengzhou University / 郑州大学 CN China (CN)

How to cite

APA:

Wu, W., Li, Y., Liu, J., Wang, J., He, Y., Davey, K., & Qiao, S.-Z. (2018). Molecular-Level Hybridization of Nafion with Quantum Dots for Highly Enhanced Proton Conduction. Advanced Materials, 30(16). https://dx.doi.org/10.1002/adma.201707516

MLA:

Wu, Wenjia, et al. "Molecular-Level Hybridization of Nafion with Quantum Dots for Highly Enhanced Proton Conduction." Advanced Materials 30.16 (2018).

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