Jump to main content
Jump to site search


Carbon-encapsulated NiO nanoparticle decorated single-wall carbon nanotube thin films for binderless flexible electrodes of supercapacitors

Abstract

With the rapid development of flexible electronic devices, flexible supercapacitors with a high power density and long life are urgently required. The performance of a supercapacitor is highly reliant on its electrode materials. Nickel oxide is a promising electrode material because of its high capacity, but its poor conductivity poses a challenge for its use in high-performance energy storage devices. Here, we report a flexible single-wall carbon nanotube (SWCNT) film decorated with a high content of carbon-encapsulated Ni (CENi) nanoparticles prepared using a floating catalyst chemical vapor deposition technique. After air oxidation, carbon-encapsulated NiO nanoparticle decorated SWCNT (CENiO/SWCNT) films were obtained. When used as a binder-free flexible electrode, this material displayed unchanged specific capacitance after 500 bending cycles at an angle of 130o. Furthermore, a high specific capacitance of 1422 F g-1 and an excellent cyclic stability (92% capacitance retention after 5000 cycles) was obtained, which can be ascribed to the good electrical conductivity and flexibility of the SWCNT scaffold as well as the high capacity of the firmly attached NiO nanoparticles in the hybrid electrode.

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Oct 2017, accepted on 06 Nov 2017 and first published on 07 Nov 2017


Article type: Paper
DOI: 10.1039/C7TA08852C
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
  •   Request permissions

    Carbon-encapsulated NiO nanoparticle decorated single-wall carbon nanotube thin films for binderless flexible electrodes of supercapacitors

    A. Majeed, P. Hou, S. Jiang, J. Li, L. Ping, G. Li, F. Zhang, C. Liu and H. Cheng, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA08852C

Search articles by author

Spotlight

Advertisements