dc.contributor.author | Ateş, Murat | |
dc.contributor.author | El-Kady, Maher | |
dc.contributor.author | Kaner, Richard B. | |
dc.date.accessioned | 2022-05-11T14:31:00Z | |
dc.date.available | 2022-05-11T14:31:00Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 0957-4484 | |
dc.identifier.issn | 1361-6528 | |
dc.identifier.uri | https://doi.org/10.1088/1361-6528/aaae44 | |
dc.identifier.uri | https://hdl.handle.net/20.500.11776/7274 | |
dc.description.abstract | Graphene/polyaniline composite hydrogels (GH/PANI) were chemically synthesized by in situ polymerization of aniline monomer. Graphene hydrogels were obtained by a hydrothermal method and used in supercapacitors. The graphene/polyaniline composite hydrogel exhibits better electrochemical performance than the pure individual components as determined by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopic measurements. A remarkable specific capacitance (C-sp) of 323.9 F g(-1) was measured using CV at a scan rate of 2 mV s(-1) at 25 degrees C. GCD measurements (311.3 F g(-1)) and electrochemical impedance analysis also support these results. The numbers were obtained at extremely high loading masses: 7.14 mg cm(-2) for GH and GH/PANI synthesized at 0 degrees C, and 8.93 mg cm(-2) for GH/PANI synthesized at 25 degrees C. The corresponding areal capacitances are 1.14, 1.75 and 2.78 F cm(-2) for GH, and GH/PANI composite hydrogels synthesized at 0 degrees C and 25 degrees C, respectively. These values in F cm(-2) are 3.80, 5.83 and 9.27 times higher than commercially available activated carbon supercapacitors (similar to 0.3 F cm(-2) for a two electrode system). Moreover, the GH/PANI composite synthesized at 25 degrees C exhibits excellent stability with 99% initial capacitance retention after 1000 charge/discharge cycles. GH/PANI composites synthesized at 0 degrees C and 25 degrees C therefore hold promise for use in supercapacitor device applications. | en_US |
dc.description.sponsorship | TUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [2219]; Kaner Lab group at UCLA (USA); Nanotech Energy | en_US |
dc.description.sponsorship | M Ates acknowledges financial support from the TUBITAK post-doctoral fellowship programme (2219) for work in the Kaner Lab group at UCLA (USA). M El-Kady and R B Kaner thank Nanotech Energy for financial support. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Iop Publishing Ltd | en_US |
dc.identifier.doi | 10.1088/1361-6528/aaae44 | |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | supercapacitor | en_US |
dc.subject | energy density | en_US |
dc.subject | thermal exfoliation | en_US |
dc.subject | graphene hydrogel | en_US |
dc.subject | polyaniline | en_US |
dc.subject | Conducting Polymers | en_US |
dc.subject | Carbon Nanotube | en_US |
dc.subject | Polyaniline | en_US |
dc.subject | Oxide | en_US |
dc.subject | Films | en_US |
dc.subject | Polymerization | en_US |
dc.subject | Nanocomposite | en_US |
dc.subject | Construction | en_US |
dc.subject | Behavior | en_US |
dc.title | Three-dimensional design and fabrication of reduced graphene oxide/polyaniline composite hydrogel electrodes for high performance electrochemical supercapacitors | en_US |
dc.type | article | en_US |
dc.relation.ispartof | Nanotechnology | en_US |
dc.department | Fakülteler, Fen Edebiyat Fakültesi, Kimya Bölümü | en_US |
dc.authorid | 0000-0003-0345-4924 | |
dc.authorid | 0000-0002-1806-0330 | |
dc.identifier.volume | 29 | en_US |
dc.identifier.issue | 17 | en_US |
dc.institutionauthor | Ateş, Murat | |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.authorscopusid | 9735216100 | |
dc.authorscopusid | 57190397371 | |
dc.authorscopusid | 7006509807 | |
dc.authorwosid | El-Kady, Maher/Q-1663-2019 | |
dc.authorwosid | Kaner, Richard B./K-1594-2019 | |
dc.authorwosid | Ates, Murat/G-3798-2012 | |
dc.identifier.wos | WOS:000426587000002 | en_US |
dc.identifier.scopus | 2-s2.0-85043482197 | en_US |
dc.identifier.pmid | 29424710 | en_US |