Title: Hydrothermal synthesis of nanostructured NiS and its optimisation as cathode material for rechargeable lithium battery

Authors: Lixia Wang; Juncai Sun; Jing Sun

Addresses: Institute of Materials and Technology, Dalian Maritime University, Dalian, 116026, China ' Institute of Materials and Technology, Dalian Maritime University, Dalian, 116026, China ' Institute of Materials and Technology, Dalian Maritime University, Dalian, 116026, China

Abstract: Nickel sulphide was synthesised by means of a hydrothermal synthesis method. X-ray diffraction (XRD) result shows that the as-prepared nickel sulphide is single NiS phase with rhombohedral structure (r-NiS). The image of scanning electron microscopy (SEM) reveals nanoplate morphology of the r-NiS. Although this r-NiS as cathode material of rechargeable lithium battery present relatively high initial discharge specific capacity, the cycling property is too bad far from the satisfactory of the requirement for lithium battery. Therefore, carbon cladding method was put forward to improve the cycle and stable properties of r-NiS as cathode material. Results indicate that the carbon cladding NiS (C-NiS) has a larger gain size, however, improves the cycle property of cell greatly.

Keywords: rechargeable batteries; lithium batteries; NiS; nickel sulphide; nanomaterials; hydrothermal synthesis; nanomanufacturing; nanotechnology; carbon cladding; gain size; cycle property.

DOI: 10.1504/IJNM.2013.056056

International Journal of Nanomanufacturing, 2013 Vol.9 No.3/4, pp.303 - 310

Received: 01 Dec 2012
Accepted: 05 Feb 2013
Published online: 31 Mar 2014 *

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