The Influence of Microwave-Assisted Heating in the Solid-State Synthesis of LiNi0.8Co0.15Al0.05O2 (NCA) Putu Hendra Widyadharma (a), Octia Floweri (b), Ferry Iskandar (a,b,c*)
a) Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia
b) Research Center for Nanosciences and Nanotechnology (RCNN), Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia
c) National Center for Sustainable Transportation Technology (NCSTT), Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia
*ferry[at]fi.itb.ac.id
Abstract
Various cathodes with high nickel content have been intensively investigated for their extraordinary great capacity and high-power Lithium-ion Battery (LiB). Among them, LiNi1-x-yCoxAlyO2 (NCA) is a promising type of nickel-rich cathode material with aluminum and cobalt co-doping as the structure stabilizer which provide better electrochemical properties and cyclability. NCA has been recognized as an excellent cathode material with high capacity of ca. 200 mAh/g and outstanding cycle life. For these reasons, NCA has become one of the promising material candidates to be applied as a battery component in Electric Vehicles (EVs). Among various method to synthesize NCA, solid-state method is often selected to achieve scalable industrial production. However, the solid-state process requires high-temperature heating for a relatively long time to attain homogeneous materials with excellent properties. In this work, we have been developing a novel synthesis route utilizing microwave-assisted heating to considerably reduce the heat treatment time. The obtained LiNi0.8Co0.15Al0.05O2 (NCA) was then characterized using X-Ray Diffraction (XRD) to assess the effect of microwave heating on the formation of crystalline structure of NCA. In addition, the analysis using Electrochemical Impedance Spectroscopy (EIS) and Charge-Discharge Testing system were also conducted to evaluate the electrochemical properties of the obtained NCA.
