3D copper-confined N-Doped graphene/carbon nanotubes network as high-performing lithium-ion battery anode

Authors

Shaikh N. Faisal, University of WollongongFollow
Chandrasekar Mayandi Subramaniyam, University of WollongongFollow
Md Islam
Aminul Chowdhury
Shi Xue Dou, University of WollongongFollow
Anup Roy
Andrew Harris
Andrew Minett

RIS ID

145111

Publication Details

Faisal, S., Mayandi Subramaniyam, C., Islam, M., Chowdhury, A., Dou, S., Roy, A., Harris, A. & Minett, A. (2021). 3D copper-confined N-Doped graphene/carbon nanotubes network as high-performing lithium-ion battery anode. Journal of Alloys and Compounds, 850

Abstract

© 2020 Elsevier B.V. A facile synthesis of three-dimensional (3D) network of copper confined nitrogen-doped graphene (NG)/carbon nanotube (CNT) with high atomic percentage of nitrogen (10.1 at.%) has been reported. The homogenous intercalation of the CNT network in-between the graphene layers decorated with copper nanoparticles take place which inhibits the self-agglomeration within the lattice and enhance the volumetric storage capability. The composite electrode demonstrates exceptionally high specific capacitance of 1250 mA h/g obtained at a current density of 0.1 A/g which is 3.4 times greater than the theoretical capacity of graphite (372 mA h/g). The discharge-charge profiles (from 0.002 to 3 V) with reversible battery capacity exhibit a stable state of the lithium-ion batteries which were observed at high rate capability of 420 mA h/g at a current density of 1 A/g even after 500 cycles. The enhancement of the electrochemical performance could be attributed to the 3D electrically conductive networks of copper confined nitrogen-doped graphene/carbon nanotubes (Cu@[N-Gr/CNT]).