- Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi
- Vol: 22 Issue: 2
- Effect of Mg and Al Dual Doping on High Voltage Cycling of LiNi 0.4 Mn 0.4 Co 0.2 O 2 Lithium-ion Ba...
Effect of Mg and Al Dual Doping on High Voltage Cycling of LiNi 0.4 Mn 0.4 Co 0.2 O 2 Lithium-ion Battery Cathode Material
Authors : Muharrem Kunduraci
Pages : 577-582
View : 17 | Download : 6
Publication Date : 2018-08-15
Article Type : Other
Abstract :Nano-sized LiNi 0.4 Mn 0.4 Co 0.2 O 2 lithium-ion battery cathode materials with and without dual Mg & Al doping were synthesized by Pechini method. The powdered materials were characterized using X-ray diffraction, scanning electron microscopy and electrochemical techniques. X-ray analyses showed that 003/104 peaks intensity ratio increased from 0.95 for undoped material to 1.27 for doped material, thereby suggesting that dual doping was beneficial in terms reducing Li/Ni cation mixing. Although dual doping caused some reduction in initial discharge capacity (140 vs. 128 mAh/g) and increase in charge transfer resistance relative to the undoped material, it noticeably helped increase capacity retention during battery testing at high voltage.Keywords : Lithium-ion batteries, Cathode, High voltage, Doping