SOLID LITHIUM SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL, AND PRODUCTION METHOD FOR SOLID LITHIUM SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL

• Main Authors: KURIKI RYO, KADOWAKI TAKUYA
• Format: Patent
• Language: English; Japanese
• Published: 21.08.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a solid lithium secondary battery positive electrode active material that is high in utilization ratio and a production method for a solid lithium secondary battery positive electrode active material.SOLUTION: Provided is a solid lithium secondary battery positive electrode active material which includes a lithium metal composite oxide having a layered crystalline structure and a coating material coating at least a part of the lithium metal composite oxide. The coating material includes an element A, and the element A is one or more elements selected from the group consisting of Nb, Ta, Ti, Al, B, P, W, Zr, La, and Ge. The solid lithium secondary battery positive electrode active material satisfies (1) and (2).SELECTED DRAWING: None 【課題】利用率が高い固体リチウム二次電池用正極活物質及び固体リチウム二次電池用正極活物質の製造方法の提供。【解決手段】固体リチウム二次電池用正極活物質であって、前記固体リチウム二次電池用正極活物質は、層状結晶構造を有するリチウム金属複合酸化物と、前記リチウム金属複合酸化物の少なくとも一部を被覆する被覆物とを備え、前記被覆物は元素Ａを含み、前記元素Ａは、Ｎｂ、Ｔａ、Ｔｉ、Ａｌ、Ｂ、Ｐ、Ｗ、Ｚｒ、Ｌａ、およびＧｅからなる群より選択される１種以上の元素であり、（１）および（２）を満たす、固体リチウム二次電池用正極活物質。【選択図】なし