POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME

• Main Author: OTSUKA YOSHIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 31.10.2019
• 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

To provide a positive electrode active material capable of manufacturing a non-aqueous electrolyte secondary battery with high capacity while suppressing gelation of a positive electrode mixture paste when used as a positive electrode active material for a secondary battery.SOLUTION: The positive electrode active material for a non-aqueous electrolyte secondary battery includes: lithium-nickel composite oxide particles containing boron; and a coating layer, attached to at least a portion of a surface of the particles, containing a compound containing one or more of silicon (Si), zinc (Zn), and aluminum (Al).SELECTED DRAWING: Figure 1 【課題】 二次電池用正極活物質として用いた場合に、正極合剤ペーストのゲル化を抑制しつつ、かつ高容量な非水系電解質二次電池を製造可能な、正極活物質を提供すること。【解決手段】 ホウ素を含有するリチウムニッケル複合酸化物の粒子と、前記粒子の表面の少なくとも一部に付着した、ケイ素（Ｓｉ）、亜鉛（Ｚｎ）、及び、アルミニウム（Ａｌ）のうち一種以上を含有する化合物を含む被覆層とを有する、非水系電解質二次電池用の正極活物質などによる。【選択図】図１