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Pàgina inicial > Articles > Articles publicats > Design and Fabrication of Printed Paper-Based Hybrid Micro-Supercapacitor by using Graphene and Redox-Active Electrolyte |
Data: | 2018 |
Resum: | Inspired by future needs of flexible, simple, and low-cost energy storage devices, smart graphene-based micro-supercapacitors on conventional Xerox paper substrates were developed. The use of redox-active species (iodine redox couple) was explored to further improve the paper device's performance. The device based on printed graphene paper itself already had a remarkable maximum volumetric capacitance of 29. 6 mF cm (volume of whole device) at 6. 5 mA cm. The performance of the hybrid electrode with redox-active potassium iodide at the graphene surface was tested. Remarkably, the hybrid device showed improved volumetric capacitance of 130 mF cm. The maximum energy density for a graphene+KI device in HSO electrolyte was estimated to be 0. 026 mWh cm. Thus, this work offers a new simple, and lightweight micro-supercapacitor based on low-cost printed graphene paper, which will have great applications in portable electronics. |
Ajuts: | Ministerio de Economía y Competitividad MAT2015-68394-R Ministerio de Economía y Competitividad MAT2017-87202-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-870 Ministerio de Economía y Competitividad SEV-2013-0295 |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Electrochemistry ; Electrolytes ; Graphene ; Portable electronics ; Supercapacitors |
Publicat a: | ChemSusChem, Vol. 11, Issue 11 (June 2018) , p. 1849-1856, ISSN 1864-564X |
Postprint 18 p, 872.4 KB |