Synthesis and Electrochemical Properties of Nickel oxide as Anode for Lithium Ion Batteries

MARIELA GISELA ORTIZ; SILVIA GRACIELA REAL; ARNALDO VISINTIN

Buenos Aires

Congreso; 20th Topical Meeting of the International Society of Electrochemistry, Advances in Lithium and Hydrogen Electrochemical Systems for Energy Conversion and Storage; 2017

Transition-metaloxides (MO, where M is Fe, Ni, Co and Cu) have been studied since thesematerials were proposed by Tarascon and co-workers [1-6]. These oxides canoffer higher capacities (600-1000 mAh g-1) that graphite material(372 mAh g-1); in particular, NiO has high theoretical capacityvalues (718 mA h g-1 for 2Li+per NiO) also present manyadvantages such as natural abundance, low cost and environmental friendless In this contributionwe would like to present the preparation and characterization of nickel oxideas anodes materials in lithium-ion batteries. Two processes are involved in thesynthetic procedure; in the first step the nickel hydroxide was obtained byhydrothermal synthesis (4h, 180°C) and then the precipitated was washed withdistilled water to remove the residual species. The second step consists of thematerial calcinations in air at 300ºC, for 4 (NiO-4h) and 24(NiO-24h) hours. The structuralcharacteristics and electrochemical properties of the obtained nickel oxidesare subsequently investigated by optical and electrochemical techniques suchas: FTIR, SEM, charge-discharge cycles, galvanostatic discharge at differentcurrents, cyclic voltammetry and electrochemical impedance spectroscopy.The anodematerials (NiO-4h and NiO-24h) were synthesized via a facile two-step route andexhibit a satisfactory specific capacity, cyclability and rate capability.These results indicate that the studied electrodes could be suitable as anodesin lithium ion batteries applications.