Journal
CARBON
Volume 59, Issue -, Pages 495-502Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2013.03.045
Keywords
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Funding
- National Natural Science Foundation of China [20974043, 21174059]
- Open Project of State Key Laboratory of Superamolecular Structure and Materials [SKLSSM201308]
- Testing Foundation of Nanjing University
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We report a novel and easy route to synthesize a mechanically strong hydrogel composed of graphene and poly (3,4-ethylenedioxythiophene) (PEDOT). 3,4-Ethylenedioxythiophene played the role of reducing agent to convert a highly oxidative graphite oxide (h-GO) to graphene and in situ polymerized itself synchronously on the active sites of the graphene to construct the hydrogel. The content of the carbonyl groups in h-GO was found to have a major impact on the generation of the hydrogel. Also the morphology and the quantity of PEDOT formed in the hydrogel were considered to be the key factors for improving the mechanical performance of the hydrogel. As-prepared enhanced graphene/PEDOT hydrogel displayed a compressive fracture stress as high as 29.6 MPa, a storage modulus about 2.1 MPa at 10 rad/s, a good electrical conductivity of 0.73 S/cm and a high specific capacitance of 174.4 F/g, which make it a potential candidate for a number of technologies such as electrochemical sensor and supercapacitor. (C) 2013 Elsevier Ltd. All rights reserved.
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