Chen, Y;
Hao, H;
Lu, X;
Li, W;
He, G;
Shen, W;
Shearing, PR;
(2021)
Porous 3D graphene aerogel co-doped with nitrogen and sulfur for high-performance supercapacitors.
Nanotechnology
, 32
(19)
, Article 195405. 10.1088/1361-6528/abdf8d.
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Abstract
Heteroatom-doped carbon materials with a high specific area, a well-defined porous structure is important to high-performance supercapacitors (SCs). Here, S and N co-doped three-dimensional porous graphene aerogel (NS-3DPGHs) have been synthesized in a facile and efficient self-assembly process with thiourea acting as the reducing and doping agent solution. Operating as a SC electrode, fabricated co-doping graphene, i.e. the sample of NS-3DPGH-150 exhibits the highest specific capacitance of 412.9 F g−1 under 0.5 A g−1 and prominent cycle stabilization with 96.4% capacitance retention in the back of 10 000 cycles. Furthermore, based on NS-3DPGH-150, the symmetrical supercapacitor as-prepared in 6 M KOH displays a superior energy density of 12.9 Wh kg−1 under the power density of 249 W kg−1. Hence, NS-3DPGHs could be considered as an excellent candidate for SCs.
| Type: | Article |
|---|---|
| Title: | Porous 3D graphene aerogel co-doped with nitrogen and sulfur for high-performance supercapacitors |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1361-6528/abdf8d |
| Publisher version: | https://doi.org/10.1088/1361-6528/abdf8d |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Technology, Physical Sciences, Nanoscience & Nanotechnology, Materials Science, Multidisciplinary, Physics, Applied, Science & Technology - Other Topics, Materials Science, Physics, porous structure, graphene, N, S co-doped, symmetrical supercapacitors |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10132956 |
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