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Reducing Synthesis Time of LiN0.8Co0.15Al0.05O2 (NCA) Cathode Material by Microwave Heat Treatment
Putu Hendra Widyadharma, Muhammad Alief Irham, Tirta R. Mayangsari, Octia Floweri, Akfiny H. Aimon, Ferry Iskandar

1) Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia

2) Department of Chemistry, Universitas Pertamina, Jl. Teuku Nyak Arief, Simprug, Jakarta 12220, Indonesia

3) Research Center for Nanosciences and Nanotechnology (RCNN), Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia

4) National Center for Sustainable Transportation Technology (NCSTT), Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia


LiNi1-x-yCoxAlyO2 (NCA) is a commonly used material as a cathode in the latest generation of lithium-ion battery (LIB). NCA is a material that practically delivers high specific capacity (~200 mAh.g-1) with excellent electronic and ionic conductivity. Thanks to its extraordinary properties, NCA is projected to be used widely in the future generation of electric vehicles (EVs). Despite its advantages, its long synthesis time at high temperature is one of the problems that hamper its industrial mass production. Herein, we develop a new synthesis method by involving microwave-assisted heat treatment to reduce synthesis time and thus improve energy efficiency. In this work, LiNi0.8Co0.15Al0.05O2 (NCA) was successfully synthesized by using chemical co-precipitation method followed by microwave-assisted heat treatment. The resulted materials were then characterized using x-ray diffraction (XRD) and Electrochemical Impedance Spectroscopy (EIS). It was revealed that 15 minutes of microwave heating was able to cut 50% of 12 h total heat treatment time, marked with the successfully formed crystalline structure of NCA. Besides, NCA that was synthesized via microwave heating showed better electrochemical performance than NCA synthesized using a conventional method, indicated by a decrease of Rct in EIS measurement and an increase of specific capacity.

Keywords: lithium ion battery (LIB), cathode material, NCA, microwave-assisted heating

Topic: Battery Technology and Management System


Conference: The 6th International Conference on Electric Vehicular Technology (ICEVT 2019)

Plain Format | Corresponding Author (Putu Hendra Widyadharma)

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