PRODUCTION METHOD OF LITHIUM-CONTAINING COMPOSITE OXIDE AND LITHIUM-CONTAINING COMPOSITE OXIDE

• Main Authors: TAKESHI KAWASATO, SATOSHI ASAKURA, MASAHIKO TAMURA
• Format: Patent
• Language: Chinese; English
• Published: 25.02.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

There is provided a production method of a lithium-containing composite oxide capable of improving performances of cycle characteristics, rate characteristics, and the like of a lithium ion secondarybattery. A production method of a lithium-containing composite oxide is characterized in that when producing a lithium-containing composite oxide by mixing a transition metal hydroxide containing Ni and Mn essentially and a lithium source and heating the mixture, a transition metal hydroxide having a crystallite diameter of the (100) plane being 35 nm or less in a crystal structure model in the space group P-3m1 of an X-ray diffraction pattern is used. 本发明提供一种对锂离子二次电池可提高循环特性、倍率特性等性能的含锂复合氧化物的制造方法。一种含锂复合氧化物的制造方法，其特征在于，将以Ni和Mn为必须元素的过渡金属的氢氧化物与锂源混合且煅烧而制造含锂复合氧化物时，使用在X射线衍射图案的空间群P-3m1的晶体结构模型中(100)面的微晶直径为35nm以下的过渡金属氢氧化物。