Hydrothermal Preparation and High Electrochemical Performance of NiS Nanospheres as Anode for Lithium-Ion Batteries

Abstract

Nickel sulfide has been widely studied as an anode material for lithium-ion batteries due to its environmental friendliness, low cost, high conductivity, and high theoretical capacity. A simple hydrothermal method was used to prepare NiS nanospheres materials with the size in the range of 100–500 nm. The NiS nanospheres electrodes exhibited a high reversible capacity of 1402.3 mAh g−1 at 200 mA g−1 after 280 cycles and a strong rate capability of 814.8 mAh g−1 at 0.8 A g−1 and 1130.5 mAh g−1 when back to 0.1 A g−1. Excellent electrochemical properties and the simple preparation method of the NiS nanospheres make it possible to prepare NiS on a large scale as the anode of lithium-ion batteries.

Rational design of N-doped C-encapsulated flower-like nickel-based heterostructured microsphere anodes for high-capacity and stable lithium storage

“…17,20 The two reduction peaks at 1.55 and 1.24 V represent the reduction process from NiS to Ni. 38,39 In the second cycle, the two peaks at 1.55 and 1.24 V shift to 1.63 and 1.27 V, which is due to the activation of the materials. In the anodic scan, four oxidation peaks can be observed near 1.23, 2.0, 2.29, and 2.53 V (delithiation).…”

The Review of Hybridization of Transition Metal-Based Chalcogenides for Lithium-Ion Battery Anodes

“…As a representative of the conversion reaction, transition metal chalcogenides, as one of the most promising alternatives to carbon-based anodes, have been extensively explored, exhibiting high specific capacity and outstanding rate performance [ 10 , 11 , 12 ]. For practical application, the drawbacks of volume expansion and low conductivity for these anode materials during the cycling process should be further resolved.…”