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Published in: Colloid and Polymer Science 2/2022

12-01-2022 | Original Contribution

Strong conductive hybrid hydrogel electrode based on inorganic hybrid crosslinking

Authors: Juan Du, Wenli Zhu, Qiaoling Yang, Xiaohong She, Hang Wu, Chihui Tsou, De Guzman Manuel, Huiping Huang

Published in: Colloid and Polymer Science | Issue 2/2022

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Abstract

Polyaniline/poly(vinyl alcohol)/TiO2 (PANI/PVA/TiO2) hybrid hydrogels with improved mechanical and electrochemical properties were fabricated via in situ oxidative polymerization of aniline (ANI) and in situ synthesized TiO2 with sol–gel method. Due to the combination of hydrogen bonds and electrostatic interactions among PANI, PVA, and TiO2, this inorganic hybrid crosslinking structures enabled the PANI/PVA/TiO2 hybrid hydrogel to possess reinforced tensile/compressive strength (26.5 kPa/8.2 MPa) and unprecedented self-healing performance. Moreover, with the optimized conductive pathways in the hybrid hydrogel, its conductivity was up to 1.38 S/m, which meets the requirement of being utilized as high-performance flexible solid-state supercapacitors. At current density of 0.5 A/g, the hydrogel-based supercapacitor provided a large capacitance of 41.0–127.5 F/g and a high energy density of 0.9–2.8 Wh/kg, which were superior to other flexible supercapacitors. The easily fabricated PANI/PVA/TiO2 conducting hydrogels provides a novel strategy to prepare hydrogel electrodes for flexible energy storage devices.

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Metadata
Title
Strong conductive hybrid hydrogel electrode based on inorganic hybrid crosslinking
Authors
Juan Du
Wenli Zhu
Qiaoling Yang
Xiaohong She
Hang Wu
Chihui Tsou
De Guzman Manuel
Huiping Huang
Publication date
12-01-2022
Publisher
Springer Berlin Heidelberg
Published in
Colloid and Polymer Science / Issue 2/2022
Print ISSN: 0303-402X
Electronic ISSN: 1435-1536
DOI
https://doi.org/10.1007/s00396-021-04930-6

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