Issue 3, 2018

Facile preparation of monodisperse NiCo2O4 porous microcubes as a high capacity anode material for lithium ion batteries

Abstract

Binary transition metal oxides have attracted great attention as high-performance electrode materials for lithium-ion batteries in recent years. Herein, monodisperse NiCo2O4 porous microcubes were prepared for the first time via a simple urea-assisted solvothermal method followed by a thermal decomposition process. The porous microcubes assembled by nanoparticles with a size of ca. 35 nm have an average edge length of 1.5 μm. Nitrogen sorption isotherms show that this structure possesses a high surface area of 26.26 m2 g−1 with an average pore diameter of 22.57 nm. The rich mesopores among NiCo2O4 microcubes not only provide a large electrode/electrolyte reaction interface, but also provide enough void space to accommodate the volume change and prevent electronic disconnection in the electrode material during cycling. Furthermore, primary nanoparticles with a smaller size within microcubes can facilitate rapid Li-ion transport. So, when the as-prepared porous NiCo2O4 microcubes are used as anode materials for Li-ion batteries, they exhibit high-rate capability and outstanding cyclability.

Graphical abstract: Facile preparation of monodisperse NiCo2O4 porous microcubes as a high capacity anode material for lithium ion batteries

Supplementary files

Article information

Article type
Research Article
Submitted
17 окт 2017
Accepted
25 дек 2017
First published
28 дек 2017

Inorg. Chem. Front., 2018,5, 559-567

Facile preparation of monodisperse NiCo2O4 porous microcubes as a high capacity anode material for lithium ion batteries

Y. Wang, J. Li, S. Chen, B. Li, G. Zhu, F. Wang and Y. Zhang, Inorg. Chem. Front., 2018, 5, 559 DOI: 10.1039/C7QI00648A

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