Development of Cobalt Sulfide-graphene Composite for Supercapacitor Applications
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Co9S8/reduced graphene (CSRG) has been prepared by a facile two step hydrothermal method and used as a supercapacitor electrode material. It is anticipated that the Co9S8 and reduced graphene oxide (RGO) would serve as a spacer material to each other to stop the agglomeration and simultaneous contribution of electrical double layer capacitance (RGO) and pseudocapacitance (Co9S8) would provide high electrochemical properties. The chemical analysis has been done by Fourier transform infrared spectroscopy and the morphology is characterised by field emission scanning electron microscopy. CSRG shows a high electrical conductivity of 98 S m-1. The symmetric supercapacitor shows a specific capacitance of ~728 F g-1 with a current density of 2 A g-1. CSRG also showed an energy density of 25.2 Wh kg-1 with a power density of 1000 W kg-1.
Abstract
Co9S8/reduced graphene (CSRG) has been prepared by a facile two step hydrothermal method and used as a supercapacitor electrode material. It is anticipated that the Co9S8 and reduced graphene oxide (RGO) would serve as a spacer material to each other to stop the agglomeration and simultaneous contribution of electrical double layer capacitance (RGO) and pseudocapacitance (Co9S8) would provide high electrochemical properties. The chemical analysis has been done by Fourier transform infrared spectroscopy and the morphology is characterised by field emission scanning electron microscopy. CSRG shows a high electrical conductivity of 98 S m-1. The symmetric supercapacitor shows a specific capacitance of ~728 F g-1 with a current density of 2 A g-1. CSRG also showed an energy density of 25.2 Wh kg-1 with a power density of 1000 W kg-1.
참고문헌 (16)
- Chen, S. -M., "Recent Advancements in Electrode Materials for the Highperformance Electrochemical Supercapacitors: A Review", International Journal of Electrochemical Science, 9, pp.4072~4085 (2014)
- Zhong, C., "A Review of Electrolyte Materials and Compositions for Electrochemical Supercapacitors", Chemical Society Reviews, 44(21), pp.7484~7539 (2015)
- Peng, X., "Two Dimensional Nanomaterials for Flexible Supercapacitors", Chemical Society Reviews, 43(10), pp.3303~3323 (2014)
- Chen, T., "Flexible Supercapacitors Based on Carbon Nanomaterials", Journal of Materials Chemistry A, 2(28), pp.10756~10775 (2014)
- Tan, Y. B., "Graphene for Supercapacitor Applications", Journal of Materials Chemistry A, 1(47), pp.14814~14843 (2013)
- Yu, Z., "Supercapacitor Electrode Materials: Nanostructures from 0 to 3 Dimensions", Energy & Environmental Science, 8(3), pp.702~730 (2015)
- Conway, B.E., "Electrochemical Supercapacitors" (1999), Plenum Publishing
- Pu, J., "Co9S8 Nanotube Arrays Supported on Nickel Foam for High-performance Supercapacitors", Physical Chemistry Chemical Physics, 16(2), pp.785~791 (2014)
- Hu, C. C., "Design and Tailoring of the Nano Tubular Arrayed Architecture of Hydrous RuO2 for Next Generation Supercapacitors", Nano Letters, 6(12), pp.2690~2695 (2006)
- Danhui Zhang, "Decorating reduced graphene oxide with Co3O4 hollow spheres and their application in supercapacitor materials", Current Applied Physics, 13(8), pp.1796~1800 (2013), 한국물리학회
- Ramachandrana, R., "Co9S8 Nanoflakes on Graphene (Co9S8", G) Nanocomposites for High Performance Supercapacitors, 2014, pp.4(40), 21151~21162
- Zhang, L., "Unusual CoS2 Ellipsoids with Anisotropic Tube-like Cavities and Their Application in Supercapacitors", Chemical Communications, 48(55), pp.6912~6914 (2012)
- Jana, M., "Covalent Surface Modification of Chemically Derived Graphene and Its Application as Supercapacitor Electrode Material", Physical Chemistry Chemical Physics, 16(16), pp.7618~7626 (2014)
- Wang, Q., "Facile Synthesis and Superior Supercapacitor Performances of Three-dimensional Cobalt SulfideHierarchitectures", Cryst Eng Comm, 13(23), pp.6960~6963 (2011)
- Huang, S., "Preparation of Graphene", Co3O4Composites by Hydrothermal Method and Their Electrochemical Properties, 2013, pp.95, 139~145
- He, G., "Preparation and Performance of NiCo2O4 Nano Wires-loaded Graphene as Supercapacitor Material", Materials Letters, 98, pp.164~167 (2013)