Fabrication and characterization of dinickel orthosilicate nanosheets as high performance anode material for lithium-ion batteries

摘要: Abstract Metal silicates are a class of high capacity anode materials for rechargeable lithium-ion batteries (LIBs). Nickel silicate (Ni2SiO4, NSO) was successfully synthesized through the process chemical precipitation-calcination-alkali washing as potential LIBs in this work. The characterizations X-ray diffraction (XRD), photoelectron spectroscopy (XPS), scanning electron microscope (SEM), transmission (TEM) and Brunauer Emmett Teller (BET) were conducted to examine surface structural properties NSO. results indicate products pure Ni2SiO4 petal-like nanosheet morphology with specific area 30.29 m2 g−1. A reversible 874.7 mAh g−1 is obtained after 50 cycles at current density 0.1 A g−1, 81.8% being maintained. In addition, NSO nanosheets hold superior 473.9 mAh 1.6 A g−1. Furthermore, cyclic voltammetry tests electrochemical impedance spectra applied investigate battery. display good cycling stability excellent rate capacity. show that dinickel orthosilicate can be considered promising candidate LIBs.