NiO-Co3O4 nanoplate composite as efficient anode in Li-ion battery. (1st October 2015)

• Record Type: Journal Article
• Authors: Zhang, Yiping; Zhuo, Qiqi; Lv, Xiaoxin; Ma, Yanyun; Zhong, Jun; Sun, Xuhui
• Is Part Of: Electrochimica acta. Volume 178(2015)
• Page Start: 590
• Page End: 596
• Publication Date: 2015-10-01
• Subjects: Li-ion battery -- nanoplate -- nickel oxide -- cobalt oxide; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.08.044
• Languages: English
• ISSNs: 0013-4686

Abstract

Highlights: 2D/0D (NiO/Co3 O4 ) nanocomposite was synthesized as anode of lithium-ion battery. The nanocomposite exhibits greatly improved specific capacity and stable cyclability. The outstanding performance is attributed to hybrid structure and synergistic effect. ABSTRACT: Nanocomposites rationally designed in structure and component are highly desirable for the development of electrodes in lithium-ion battery application for that they can take full advantages of different structures and components to achieve superior electrochemical properties. A nanocomposite with the two-dimension (2D) NiO nanoplate of a hexagonal structure and zero-dimension (0D) Co3 O4 nanoparticles was synthesized by the hydrothermal method. Scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy were employed to characterize the composition, morphology, microstructure and chemical state of the nanocomposite, respectively. As an anode material of lithium-ion battery, the nanocomposite exhibits greatly improved specific capacities and stable cyclability of 633 mA h g −1 at a current density of 100 mA g −1 up to 70 cycles, much higher than the corresponding building block alone. The outstanding performance of the NiO/Co3 O4 nanocomposite is attributed to the hybrid structure and the synergistic effect of different components. This large-scale and cost-efficient synthesis can be extended for the design and synthesis of transition metal oxides composite for high-performance electrochemical energy storage.