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Nanostructured CoO/NiO/CoNi Anodes with Tunable Morphology for High Performance Lithium-ion Batteries

Abstract

Nanostructured CoO/NiO/CoNi composites as anode materials for lithium-ion batteries (LIBs) have been successfully prepared by a facile, straightforward, and large-scale dealloying method. The effect of NaOH solution concentration on the structure, morphology and electrochemical performances of the resulting products are studied systematically. These results indicate that the concentration of NaOH solution mainly influences the morphology of the CoO/NiO/CoNi. Cyclic voltammetry (CV) and charge–discharge tests have been conducted to assess the lithium storage performances of the CoO/NiO/CoNi anodes obtained from the 5 M NaOH solution. Remarkably, the CoO/NiO/CoNi anodes exhibit high specific capacity, excellent rate property, and superb cycling stability. A reversible capacity is still maintained at 575 mAh g−1 after 500 cycles at a current density of 200 mA g−1. Even at a current rate of 2000 mA g-1, the capacity could reach 267 mAh g-1. The outstanding electrochemical properties of the CoO/NiO/CoNi anodes make them promising anode materials of LIBs and other energy storage applications.

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Publication details

The article was received on 25 May 2017, accepted on 13 Jul 2017 and first published on 13 Jul 2017


Article type: Paper
DOI: 10.1039/C7DT01904A
Citation: Dalton Trans., 2017, Accepted Manuscript
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    Nanostructured CoO/NiO/CoNi Anodes with Tunable Morphology for High Performance Lithium-ion Batteries

    H. Liu, X. Wang, H. Xu, W. Yu, X. Dong, Y. Yang, H. Zhang and J. Wang, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT01904A

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