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Mixing amorphous carbon enhanced electrochemical performances of NiCo2O4 nanoparticles as anode materials for sodium-ion batteries

Nguyen, H.H. and To, N.V. and Tran, T.V. and Nguyen, K.V. and Luong, S.T. and Nguyen, N.N.T. and Hoang, C.V. and Nguyen, H.S. and Nguyen, N.V. (2020) Mixing amorphous carbon enhanced electrochemical performances of NiCo2O4 nanoparticles as anode materials for sodium-ion batteries. Applied Physics A: Materials Science and Processing, 126 (7): 528. ISSN 9478396

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Abstract

The NiCo2O4 ternary transition metal oxide (NCO) has been received a great interest as anode material for sodium-ion batteries, recently. Here we show that a composite material composed of NCO nanoparticles (NCO-NPs) and amorphous carbon (NCO/C composite) displayed a superior electrochemical performance over the NCO-NPs. The NCO-NPs delivered a capacity of 172 mAh g−1 at the current density of 50 mA g−1, and the capacity was reduced to 29 mAh g−1 after 50 cycles. The NCO/C composite showed a capacity of 213 mAh g−1 at 50 mA g−1; the capacity was lowered to 119 mAh g−1 after 100 cycles. The capacity of the composite at 100 mA g−1, 200 mA g−1 and 300 mA g−1 was ca. 123 mAh g−1, 93 mAh g−1 and 62 mAh g−1, respectively. This improvement is ascribed to the presence of the activated hard carbon of high electronic conductivity. Our work suggests that the combination of amorphous carbon with the NCO-NPs can serve as anodes for sodium-ion batteries. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

Item Type: Article
Divisions: Faculties > Faculty of Physical and Chemical Engineering
Identification Number: 10.1007/s00339-020-03713-0
Uncontrolled Keywords: Amorphous carbon; Anodes; Metal ions; Nanoparticles; Nickel compounds; Transition metal oxides; Transition metals; Anode material; Electrochemical performance; Electronic conductivity; Hard carbon; Sodium-ion batteries
Additional Information: Language of original document: English.
URI: http://eprints.lqdtu.edu.vn/id/eprint/8987

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