Abstract
In view of the limitations of traditional electrode materials for lithium-ion batteries, such as LiCoO2, LiMn2O4 and LiFePO4, Li[NiₓMn₁-x-yCoₙ]O₂, a lithium-rich manganese-based ternary composite, was explored in this paper, and carbon nanotubes (CNTs) were introduced for surface modification to improve the electrochemical performance of the materials. The composite was synthesized by coprecipitation method and calcined at 800-900℃ for 4-6 hours to form the final material. Performance control includes surface modification, doping modification and coating treatment to optimize conductivity, structural stability and cycle stability. The analysis through X-ray diffraction (XRD) and scanning electron microscopy (SEM) indicates that the synthesized material exhibits a well-defined crystalline structure and favorable micro-morphological characteristics. Electrochemical evaluations demonstrate that this material possesses a significant specific capacity, alongside robust cycling stability and superior rate capability. Discussions on the underlying mechanisms highlight how adjusting elemental ratios, incorporating dopants, and applying surface modifications can enhance material performance. This research successfully fabricated lithium-rich manganese-based ternary composite materials with outstanding electrochemical attributes, thereby offering both theoretical insights and technical foundations for advancing high energy density lithium-ion batteries.
Published Version
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