Analysis on Sintering Process of LiNi0.5Mn1.5O4 Prepared by Co-precipitation Method and Its Performance
LiNi0.5Mn1.5O4 is one of the development directions with a better future in lithium-ion batteries,and its characteristics such as high discharge platform,low preparation cost and low toxicity are all features that society urgently expects for lithium batteries to have.In this work,the co-precipitation method was used to prepare LiNi0.5Mn1.5O4,and differential thermal-thermogravimetric and X-ray diffraction analyses were performed to study the sintering reaction process and reaction kinetics,and the change process of substances during calcination and the activation energy of the reaction were obtained.Scanning electron microscopy,X-ray diffraction analysis and first charge-discharge analysis were performed on the prepared lithium nickel-manganate.The results showed that in the preparation of lithium nickel-manganate cathode material,lithium carbonate basically did not participate in the reaction before 700℃,and the reaction at this time was mainly the decomposition and oxidation of precursors.After 700℃,lithium carbonate started to melt and decompose and react with the precursor,and the reaction rate was greatly affected by the temperature.
Lithium-ion batteryLiNi0.5Mn1.5O4PrecipitantReaction process
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