Search International and National Patent Collections
|1. (WO2018040143) HIGH-QUALITY, LITHIUM-RICH AND MANGANESE-BASED POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERY, AND METHOD FOR SYNTHESIZING SAME|
|Applicants:||SHANDONG YUHUANG NEW ENERGY TECHNOLOGY CO., LTD.
|Title:||HIGH-QUALITY, LITHIUM-RICH AND MANGANESE-BASED POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERY, AND METHOD FOR SYNTHESIZING SAME|
Provided are a high-quality, lithium-rich and manganese-based positive electrode material for a lithium ion battery and a method for synthesizing same, which belong to the technical field of lithium ion batteries. The method comprises the following steps: preparing a precursor by complexing an amino acid and a nickel-cobalt-manganese metal, mixing the above-mentioned precursor with a lithium salt, and subjecting same to ball-milling, drying and calcination to obtain a finished product. The amino acid is used as a complexing agent, is environment-friendly and non-toxic, and exhibits extremely small corrosion with regard to operation equipment; the amino acid has a complexing action, slightly stronger than that of ammonia water, on nickel, cobalt and manganese, and the complexing actions on the three metals are similar, this benefitting the coprecipitation of the three transition metals, achieving the uniform distribution of each metal element in a material, improving the comprehensive electrochemical performance of a lithium-rich and manganese-based material, and improving the quality of the material. The lithium-rich and manganese-based material prepared by the method has characteristics such as a high tapped density, a high compaction density, and a better electrochemical performance.