Co(OH)<sub>2</sub>nanosheet-decorated graphene–CNT composite for supercapacitors of high energy density

Qian Cheng; Jie Tang; Norio Shinya; Lu‐Chang Qin

doi:10.1088/1468-6996/15/1/014206

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JOURNAL ARTICLE

Co(OH)₂nanosheet-decorated graphene–CNT composite for supercapacitors of high energy density

Qian Cheng Jie Tang Norio Shinya Lu‐Chang Qin

Year: 2014 Journal: Science and Technology of Advanced Materials Vol: 15 (1)Pages: 014206-014206 Publisher: Taylor & Francis

DOI: 10.1088/1468-6996/15/1/014206

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Abstract

A composite of graphene and carbon nanotubes has been synthesized and characterized for application as supercapacitor electrodes. By coating the nanostructured active material of Co(OH)₂ onto one electrode, the asymmetric supercapacitor has exhibited a high specific capacitance of 310 F g^-1, energy density of 172 Wh kg^-1 and maximum power density of 198 kW kg^-1 in ionic liquid electrolyte EMI-TFSI.

Keywords:

Supercapacitor Materials science Graphene Nanosheet Capacitance Electrolyte Power density Carbon nanotube Composite number Electrode Ionic liquid Chemical engineering Nanotechnology Coating Composite material Power (physics) Catalysis Chemistry Organic chemistry

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Supercapacitor Materials and Fabrication

Physical Sciences → Materials Science → Electronic, Optical and Magnetic Materials

Advancements in Battery Materials

Physical Sciences → Engineering → Electrical and Electronic Engineering

Advanced Battery Materials and Technologies

Physical Sciences → Engineering → Electrical and Electronic Engineering

Co(OH)₂nanosheet-decorated graphene–CNT composite for supercapacitors of high energy density

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