A novel method to preparing LiNi0.8Co0.15Al0.05O2 cathode materials using nano-sized Al(OH)3

• Published in: Materials letters 2023-03, Vol.335, p.133816, Article 133816
• Main Authors: Wang, Jiatai, Zhou, Geng, Hou, Shunli, Wei, Shishi, Li, Yuanyuan, Dong, Siyu, Yan, Xiaocen, Zhao, Duan, Hou, Xiaoyi
• Format: Article
• Language: English
• Subjects: Energy storage and conversion; Green synthesis; LiNi0.8Co0.15Al0.05O2; Nano-sized Al(OH)3
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2023.133816

•The size of nano-sized Al(OH)3 was reduced by a homogeneous precipitation method.•Nano-sized Al(OH)3 as raw material to prepare NCA cathode material.•The electrochemical performance of NCA prepared by nano-sized Al(OH)3 was excellent. The Ni-rich layered oxide LiNi0.8Co0.15Al0.05O2 (NCA) is primarily synthesized by mixing Ni-Co precursor with an Al source and LiOH followed by sintering the mixture at high temperatures. However, the particle size of the raw materials affects the electrochemical performance of the cathode material. This study used a homogeneous precipitation method to prepare nano-sized Al(OH)3. The Ni-Co precursor and Al(OH)3 were sonicated before calcination with LiOH at 800 °C for 20 h to obtain NCA. The first discharge of NCA had a specific capacity of 166.53 mAh/g at a current density of 0.2C. The capacity retention was 85.18 % after 120 cycles.