3D copper-confined N-Doped graphene/carbon nanotubes network as high-performing lithium-ion battery anode
- Publisher:
- Elsevier BV
- Publication Type:
- Journal Article
- Citation:
- Journal of Alloys and Compounds, 2021, 850, pp. 156701-156701
- Issue Date:
- 2021-01-05
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| Filename | Description | Size | |||
|---|---|---|---|---|---|
| 1-s2.0-S0925838820330656-main.pdf | Published version | 1.66 MB |
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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]).
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