Annealing effect on structural and electrochemical performance of Ti-doped LiNi1/3Mn1/3Co1/3O2 cathode materials

Journal of Electrochemical Science and Engineering

article

KelimahElong¹  Muhd Firdaus Kasim¹  Nurhanna Badar³  Norashikin Kamarudin¹  Norlida Kamarulzaman¹  Zurina Osman⁴ 

[1] Centre for Functional Materials and Nanotechnology, Institute of Science, Universiti Teknologi MARA;School of Chemistry and Environment, Faculty of Applied Sciences, Universiti Teknologi MARA;Faculty of Science and Marine Environment, Universiti Malaysia Terengganu;Physics Department, Universiti Malaya

关键词: Cathode material;    Ti doping;    combustion method;    rietveld refinement;    Li-ion battery;    NMC 111;   

DOI  :  10.5599/jese.1563

学科分类：内科医学

来源: International Association of Physical Chemists (IAPC)

【 摘 要 】

NMC 111 cathode materials exhibit engaging properties in high energy density and low cost, making it great potential for the next generation of high-energy lithium-ion batteries. However, it still faces challenges such as fast capacity fade, especially at high C rates. Herein, we implement the novel Ti-doped cathode material, LiNi0.3Mn0.3Co0.3Ti0.1O2 (NMCT) synthesized via the combustion method. It was discovered that NMCT can effectively improve capacity delivery at high C rates. The T80 material demonstrated superior electrochemical annealed at 800 ˚C for 72 h, with an exceptional specific discharge capacity of 148.6 mAh g-1 and excellent cycle stability (capacity retention 96.8 %) after 30th cycles at 3 C. The results demonstrated that Ti-doped NMC had superior advantages for LiNi1/3Mn1/3Co1/3O2 (NMC 111) material at the optimum temperature of 800 °C for 72 h. It is one of the potential cathode materials for Li-ion batteries.

【 授权许可】

CC BY