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Highly stretchable, transparent, and colorless electrodes from a diblock copolymer electrolyte

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Abstract

Herein, highly stretchable, transparent, and colorless, electrodes free of liquid and non-volatile components were fabricated for the first time. Crosslinkable diblock copolymers of poly[(ethylene glycol)9 methyl ether acrylate-b-n-butyl acrylate] with preset molecular weights and compositions were synthesized via reversible addition–fragmentation chain transfer polymerization in solution. The electrodes were made of diblock copolymer/LiClO4 composites. It was found that the dielectric elastomer actuators (DEAs) made of an acrylic dielectric elastomer (VHBTM4910) and the electrodes of the crosslinked poly[(ethylene glycol)9 methyl ether acrylate140-b-n-butyl acrylate80]/LiClO4 could exhibit actuation area strains over 100% when driven by voltage. The DEAs showed over 90% light transmittance in the entire range of the visible wavelengths. The block architecture and composition were crucial for the electrode performance although only the block of poly[(ethylene glycol)9 methyl ether acrylate] contributed to ionic conductivity. The presence of poly(butyl acrylate) blocks avoided dewetting during electrode fabrication such that a transparent electrode was achieved.

Graphical abstract: Highly stretchable, transparent, and colorless electrodes from a diblock copolymer electrolyte

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Publication details

The article was received on 23 Jun 2017, accepted on 25 Jul 2017 and first published on 10 Aug 2017


Article type: Paper
DOI: 10.1039/C7TC02778H
Citation: J. Mater. Chem. C, 2017, Advance Article
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    Highly stretchable, transparent, and colorless electrodes from a diblock copolymer electrolyte

    P. Xie, X. Yang, T. Li and Y. Luo, J. Mater. Chem. C, 2017, Advance Article , DOI: 10.1039/C7TC02778H

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