Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/122495
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Type: Journal article
Title: Free-standing PEDOT/polyaniline conductive polymer hydrogel for flexible solid-state supercapacitors
Author: Yang, Z.
Ma, J.
Bai, B.
Qiu, A.
Losic, D.
Shi, D.
Chen, M.
Citation: Electrochimica Acta, 2019; 322:134769-1-134769-9
Publisher: Elsevier
Issue Date: 2019
ISSN: 0013-4686
1873-3859
Statement of
Responsibility: 
Zhaokun Yang, Jun Ma, Borui Bai, Aidong Qiu, Dusan Losic, Dongjian Shi, Mingqing Chen
Abstract: In comparison with inorganic and dry polymeric materials, conductive polymer hydrogels are promising soft electrode materials due to their unique solid-liquid interface. Nevertheless, the existing hydrogels lack either excellent electrochemical performance or mechanical resilience. Here we report a strategy to overcome this limitation by integrating two types of conducting polymers – polyaniline and PEDOT – through a molecular bridge provided by phytic acid. The acid replaces some of PSS, promoting transformation of PEDOT chains from the benzoic structure to the quinoid structure. The resulting hydrogel consists of a 3D network of PEDOT sheets where PANi are inlaid; it has highly improved mechanical properties in comparison with PEDOT hydrogel due to molecular interactions between PANi and PEDOT. A flexible solid-state supercapacitor based on PEDOT/PANi hydrogel delivered a high volumetric energy density of 0.25 mWh cm−3 at a power density of 107.14 mW cm−3, surpassing many of previously reported solid-state supercapacitors based on PEDOT and hydrogels of other conducting polymers and graphene oxide. This study represents a new direction for the development of conductive polymer composite hydrogels which combine excellent electrochemical performance with mechanical resilience.
Rights: © 2019 Elsevier Ltd. All rights reserved.
DOI: 10.1016/j.electacta.2019.134769
Grant ID: http://purl.org/au-research/grants/arc/IH150100003
Published version: http://dx.doi.org/10.1016/j.electacta.2019.134769
Appears in Collections:ARC Research Hub for Graphene Enabled Industry Transformation publications
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