NDLI: $SiO_{2}$/C Composite as a High Capacity Anode Material of $LiNi_{0.8}Co_{0.15}Al_{0.05}O_{2}$ Battery Derived from Coal Combustion Fly Ash

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$SiO_{2}$/C Composite as a High Capacity Anode Material of $LiNi_{0.8}Co_{0.15}Al_{0.05}O_{2}$ Battery Derived from Coal Combustion Fly Ash

Content Provider	MDPI
Author	Jumari, Arif Yudha, Cornelius Satria Widiyandari, Hendri Lestari, Annisa Puji Rosada, Rina Amelia Santosa, Sigit Puji Purwanto, Agus
Copyright Year	2020
Description	Abundantly available SiO2 (silica) has great potential as an anode material for lithium-ion batteries because it is inexpensive and flexible. However, silicon oxide-based anode material preparation usually requires many complex steps. In this article, we report a facile method for preparing a SiO2/C composite derived from coal combustion fly ash as an anode material for Li-ion batteries. SiO2 was obtained by caustic extraction and HCl precipitation. Then, the SiO2/C composite was successfully obtained by mechanical milling followed by heat treatment. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). Electrochemical properties were tested using an 18650 cylindrical cell utilizing LiNi0.8Co0.15Al0.05O2 (NCA) as the counter electrode. Based on the obtained results, the physiochemical characteristics and electrochemical performance, it was determined that SiO2/C composites were greatly affected by the temperature of heat treatment. The best result was obtained with the SiO2 content of 10% w/w, heating temperature of 500 °C, initial specific discharge capacity of 586 mAh g−1 at 0.1 C (1 C = 378 mAh g−1), and reversible capacity of 87% after 20 cycles. These results confirmed that the obtained materials had good initial discharge capacity, cyclability, high performance, and exhibited great potential as an anode material for LIBs.
Starting Page	8428
e-ISSN	20763417
DOI	10.3390/app10238428
Journal	Applied Sciences
Issue Number	23
Volume Number	10
Language	English
Publisher	MDPI
Publisher Date	2020-11-26
Access Restriction	Open
Subject Keyword	Applied Sciences Electrochemistry Anode Material Composite Material Lithium-ion Batteries Sio2/c
Content Type	Text
Resource Type	Article

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