Effects of Alumina Films on N-Doped Carbon NanotubesGraphene Composites as Anode Materials of Lithium-Ion Batteries
Joint Authors
Lin, Chuen-Chang
Hsu, Shu-Pei
Chen, Guang-Jhong
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-29
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
A carbon nanotubes/graphene composite is grown on nickel foil without additional catalysts by one-step ambient pressure chemical vapor deposition (CVD).
Next, the carbon nanotubes/graphene composite is modified by radio frequency (RF) nitrogen plasma.
Finally, to improve its initial coulombic efficiency/electrochemical stability, lower potential during the charge process (coin cell), and boost potential during the discharge process (lithium-ion battery), alumina is deposited onto the N-doped carbon nanotubes/graphene composite by RF magnetron sputtering at different power levels and periods of time.
The charge specific capacity (597 mAh/g) and initial coulombic efficiency (81.44% > 75.02% for N-doped carbon nanotubes/graphene) of Al2O3/N-doped CNTs/graphene for the coin cell reached a maximum at the best sputtering condition (power=65 W and time=30 min).
Al2O3/N-doped CNTs/graphene (the best sputtering condition) exhibits higher initial coulombic efficiency (79.8%) compared with N-doped CNTs/graphene (initial coulombic efficiency: 74.3%) for the lithium-ion battery.
Furthermore, the achievement fraction (about 70%) of full charge capacity (coin cell) for Al2O3/N-doped carbon nanotubes/graphene (the best sputtering condition) is higher than that (about 30%) for N-doped carbon nanotubes/graphene at a voltage lower than about 0.25 V.
Moreover, it also shows a little higher electrochemical stability (coin cell) of charge capacity for Al2O3/N-doped carbon nanotubes/graphene (the best sputtering condition) in comparison with N-doped carbon nanotubes/graphene and Al2O3/N-doped CNTs/graphene (the best sputtering condition) exhibits better cyclic stability (lithium-ion battery) of discharge capacity compared with N-doped CNTs/graphene.
American Psychological Association (APA)
Lin, Chuen-Chang& Hsu, Shu-Pei& Chen, Guang-Jhong. 2020. Effects of Alumina Films on N-Doped Carbon NanotubesGraphene Composites as Anode Materials of Lithium-Ion Batteries. Journal of Nanomaterials،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1188515
Modern Language Association (MLA)
Lin, Chuen-Chang…[et al.]. Effects of Alumina Films on N-Doped Carbon NanotubesGraphene Composites as Anode Materials of Lithium-Ion Batteries. Journal of Nanomaterials No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1188515
American Medical Association (AMA)
Lin, Chuen-Chang& Hsu, Shu-Pei& Chen, Guang-Jhong. Effects of Alumina Films on N-Doped Carbon NanotubesGraphene Composites as Anode Materials of Lithium-Ion Batteries. Journal of Nanomaterials. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1188515
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1188515