Carbon Nanotube@N-Doped Mesoporous Carbon Composite Material for Supercapacitor Electrodes

Xinyu Fu; Aibing Chen; Yifeng Yu; Senlin Hou; Lei Liu

doi:10.1002/asia.201801865

Carbon Nanotube@N-Doped Mesoporous Carbon Composite Material for Supercapacitor Electrodes

Chem Asian J. 2019 Mar 1;14(5):634-639. doi: 10.1002/asia.201801865. Epub 2019 Feb 1.

Authors

Xinyu Fu¹, Aibing Chen¹, Yifeng Yu¹, Senlin Hou², Lei Liu¹

Affiliations

¹ College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, P.R. China.
² The Second Hospital of Hebei Medical University, 215 Heping Road, Shijiazhuang, 050000, P.R. China.

PMID: 30614651
DOI: 10.1002/asia.201801865

Abstract

Here, carbon nanotube@N-doped mesoporous carbon (CNT@N-PC) composites were synthesized by using resorcinol-formaldehyde resin as carbon source, ionic liquids (ILs) as template, and nitrogen sources and tetraethyl orthosilicate (TEOS) as assistant agent. The use of ILs-modified CNT with nitrogen and TEOS facilitated the generation of a richer mesoporous structure. The obtained CNT@N-PC was composed of a CNT core and mesoporous carbon particles around it. CNT@N-PC showed a 3D network structure like "dewy cobwebs" and had a high surface area of 857 m² g^-1 , uniform pore size distribution (3.0 nm), and suitable N content (4.9 at.%). When used as supercapacitor electrode, the CNT@N-PC exhibited a high specific capacitance (244 F g^-1 at 1 A g^-1 ), good rate capability and favorable capacitance retention (92.5 % capacitive retention after 5000 cycles), demonstrating the potential for application in high-performance supercapacitors.

Keywords: N-doping; carbon nanotubes; composite materials; mesoporous carbon; supercapacitors.