METHOD FOR PRODUCING POSITIVE ACTIVE MATERIAL PRECURSOR AND POSITIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, EXHIBITING CONCENTRATION GRADIENT, AND POSITIVE ACTIVE MATERIAL PRECURSOR AND POSITIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, EXHIBITING CONCENTRATION GRADIENT, PRODUCED BY SAME

• Main Authors: YUN, JIN KYEONG, JUNG, JAE YONG, JEON, SUK YONG, SUNG, YONG CHUL, CHOI, MOON HO, KIM, JIK SOO
• Format: Patent
• Language: English; Polish
• Published: 20.05.2024
• 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

Disclosed are a method for manufacturing a lithium secondary battery positive active material exhibiting a concentration gradient and a lithium secondary battery positive active material exhibiting a concentration gradient, manufactured by the method, and more particularly, a method for manufacturing a lithium secondary battery positive active material exhibiting a concentration gradient and a lithium secondary battery positive active material exhibiting a concentration gradient, manufactured by the method, the method being characterized by forming a barrier layer so as to maintain a concentration gradient layer even in case of thermal diffusion by a subsequent thermal treatment process.