Precipitation and Calcination of High-Capacity LiNiO2 Cathode Material for Lithium-Ion Batteries
Välikangas, Juho; Laine, Petteri; Hietaniemi, Marianne; Hu,Tao; Tynjälä, Pekka; Lassi, Ulla (2020). Precipitation and Calcination of High-Capacity LiNiO2 Cathode Material for Lithium-Ion Batteries. Applied Sciences, 10 (24), 8988. DOI: 10.3390/app10248988
Published inApplied Sciences
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.
This article presents the electrochemical results that can be achieved for pure LiNiO2 cathode material prepared with a simple, low-cost, and efficient process. The results clarify the roles of the process parameters, precipitation temperature, and lithiation temperature in the performance of high-quality LiNiO2 cathode material. Ni(OH)(2) with a spherical morphology was precipitated at different temperatures and mixed with LiOH to synthesize the LiNiO2 cathode material. The LiNiO2 calcination temperature was optimized to achieve a high initial discharge capacity of 231.7 mAh/g (0.1 C/2.6 V) with a first cycle efficiency of 91.3% and retaining a capacity of 135 mAh/g after 400 cycles. These are among the best results reported so far for pure LiNiO2 cathode material.