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Lithium Battery Classification
Nov 27, 2018

There are many kinds of positive electrode materials for lithium ion batteries. According to different cathode materials, they can be divided into lithium cobaltate, lithium manganate, ternary materials, lithium iron phosphate and lithium titanate. The ternary lithium battery refers to a lithium battery using three transition metal oxides of nickel, cobalt and manganese as a positive electrode material. Since it combines the advantages of lithium cobaltate, lithium nickelate and lithium manganate, the performance is superior to the above. Any single component cathode material. The experimental analysis indicates that the three different valence elements form a superlattice structure, and there are obvious synergistic effects between the three components, which makes the material more stable and the discharge platform is as high as 3.6V, so it is considered to be the most promising. One of the positive electrode materials. The ternary battery has high energy density, good safety and stability, excellent electrochemical characteristics such as high-rate discharge, and moderate cost advantage. It is obtained in the field of small and medium-sized lithium batteries such as consumer digital electronic products, industrial equipment, and medical instruments. It has been widely used and has shown strong development potential in the field of power lithium batteries such as intelligent robots, AGV logistics vehicles, drones and new energy vehicles.

At present, the research on ternary materials mainly focuses on the preparation of precursors, the synthesis of materials and the relationship between electrochemical properties and structure. Most of the transition metal elements Ni, Co and Mn exist in the valence state of +2, +3, and +4. In the process of charge and discharge, only Ni2+/Ni4+ and Co3+/Co4+ occur, and Mn is basically not. Participation in the electrochemical reaction only serves to stabilize the structure of the material. Regarding the preparation method, synthetic methods commonly used in the industry include a high temperature solid phase method, a coprecipitation method, a sol-gel method, a hydrothermal synthesis method, a combustion method, and the like. The ternary material is a lithium battery cathode material with superior comprehensive performance. The molar ratio of the three materials can be changed within a certain range, and the corresponding additives (binder, conductive agent, current collector, etc.) can be added to obtain a certain On the one hand, there are outstanding performance characteristics, such as power type ternary lithium battery, capacity type ternary lithium battery, ultra-low temperature ternary lithium battery and so on.