Journal Article

FZJ-2020-05417

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Composite proton-conducting membranes with nanodiamonds

Kulvelis, Y. V. (Corresponding author)Extern* ; Primachenko, O. N. ; Odinokov, A. S. ; Shvidchenko, A. V. ; Bairamukov, V. Y. ; Gofman, I. V. ; Lebedev, V. T. ; Ivanchev, S. S. ; Vul, A. Y. ; Kuklin, A. I. ; Wu, B.FZJ*

2020
Taylor & Francis London [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/26874  doi:10.1080/1536383X.2019.1680981

Abstract: A new approach was applied to improve the proton conductivity mechanism in perfluorinated membranes for hydrogen fuel cells. The composite short-side chain membranes were modified with functionalized diamond nanoparticles. Carboxylated nanodiamonds embedded in the polymer matrix provide an increase in conductivity at a moderate nanodiamond content, while the mechanical strength of the membranes remains high. The casting method of membranes preparation from solutions in N,N-dimethylformamide allowed saving the general channel structure in membranes at the presence of nanodiamonds, in agreement with neutron scattering data. We propose the formation of additional areas of conductivity, formed controllably, due to nanodiamond particles associated with polymer chains, on the surface of which accelerated diffusion of protons through the hopping Grotthus mechanism from the centers of proton adsorption proceeds with the transition to proton-conducting channels of the matrix covered with sulfonic groups.

Keyword(s): Polymers, Soft Nano Particles and Proteins (1st) ; Soft Condensed Matter (2nd)

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Contributing Institute(s):

1. JCNS-4 (JCNS-4)
2. Neutronenstreuung (JCNS-1)
3. JCNS-FRM-II (JCNS-FRM-II)
4. Heinz Maier-Leibnitz Zentrum (MLZ)

Research Program(s):

1. 6215 - Soft Matter, Health and Life Sciences (POF3-621) (POF3-621)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)
3. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)

Experiment(s):

1. KWS-3: Very small angle scattering diffractometer with focusing mirror (NL3auS)

Appears in the scientific report 2020

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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