There are many kinds of positive electrode materials of the lithium-ion battery, which can be divided into lithium cobaltate, lithium manganate, three-yuan material, lithium iron phosphate, etc. according to the positive electrode material. Trimer lithium battery refers to a lithium battery using three transition metal oxides using nickel, cobalt, manganese, as a positive electrode material. Since it is combined with lithium cobaltate, lithium nickellate and lithium manganese acid three types of materials, better than the above performance Any single set of positive electrode materials. The experimental analysis indicated that the elements of three differentiated prices formed a superlattice structure, and there was a significant synergistic effect between the three components, so that the material was more stable, and the discharge platform was as high as 3.6V, so it was considered to be * application prospects One of the positive materials. The ternary battery has excellent energy density, good safety and stability, support high-magnification discharge, etc. Widely used, and show strong development potential in the field of smart robots, AGV logistics vehicles, drones and new energy vehicles.
At present, the study of the three-dimensional materials is mainly concentrated on the preparation of precursors, the synthesis of materials and the relationship between electrochemical properties and structures. Most of the transition metal elements Ni, Co, and Mn are present in + 2, + 3, + 4 valence, and only Ni2 + / Ni4 + and CO3 + / CO4 +, Mn are substantially not in the electrochemical reaction during charge and discharge process, respectively. Participate in electrochemical reactions, just play a function of stabilizing the structure. Regarding the preparation method, the industrially used synthesis method is: high temperature solid phase method, common precipitation method, sol - gel method, hydrothermal synthesis method, combustion method, etc. Trimetal materials are a combined lithium battery positive electrode material that changes the molar ratio of three materials in a certain range, and adds corresponding additives (binder, conductive agent, collective body, etc.), which can be obtained On the one hand, there are highlighted performance characteristics, such as power-type three-dimensional lithium batteries, capacity triples lithium batteries, ultra-low temperature ternary lithium batteries, etc.
Wuxi Huizhong, Nanjing Xia Hua, Wuxi
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