Journal
CHINESE CHEMICAL LETTERS
Volume 32, Issue 6, Pages 2013-2016Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2021.01.051
Keywords
Self-assembly; Lamellar nanochannels; Nanocomposite electrolytes; Comb copolymers; Polyoxometalates
Categories
Funding
- National Natural Science Foundation of China [22075097]
- Program for JLU Scienceand Technology Innovative Research Team [2017TD10]
- Open Research Fund of State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences [2020-09]
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A supramolecular strategy was developed to fabricate a nanocomposite electrolyte with highly ordered lamellar proton-conducting nanochannels, offering improved ion conductivity and mechanical reinforcement.
The construction of nanostructured ion-transport channels is highly desirable in the design of advanced electrolyte materials, as it can enhance ion conductivity by offering short ion-transport pathways. In this work, we present a supramolecular strategy to fabricate a nanocomposite electrolyte containing highly ordered lamellar proton-conducting nanochannels, by the electrostatic self-assembly of a polyoxometalate H3PW12O40 (PW) and a comb copolymer poly(4-methlstyrene)-graft-poly(N-vinyl pyrrolidone). PW can effectively regulate the self-assembling order of polymer moieties to form a large-range lamellar structure, meanwhile, introducing protons into the nanoscale lamellar domains to build proton transport channels. Moreover, the rigid PW clusters contribute a remarkable mechanical reinforcement to the nanocomposites. The lamellar nanocomposite exhibits a conductivity of 4.3 x 10(4) S/cm and a storage modulus of 1.1 x 10(7) Pa at room temperature. This study provides a new strategy to construct nanostructured ion-conductive pathways in electrolyte materials. (C) 2021 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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