POSITIVE ELECTRODE ACTIVE MATERIAL FOR SODIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING SAME, AND SODIUM SECONDARY BATTERY COMPRISING SAME

The present invention provides a positive electrode active material for a sodium secondary battery, a method for manufacturing a positive electrode active material, a positive electrode for a sodium secondary battery comprising the positive electrode active material, and a sodium secondary battery,...

Full description

Saved in:
Bibliographic Details
Main Authors JUNG, Kuhyun, KIM, Da Mo A, LEE, Dongwook, LEE, Myeong Joo, PARK, A Ram
Format Patent
LanguageEnglish
French
Korean
Published 10.05.2024
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:The present invention provides a positive electrode active material for a sodium secondary battery, a method for manufacturing a positive electrode active material, a positive electrode for a sodium secondary battery comprising the positive electrode active material, and a sodium secondary battery, the positive electrode active material for a sodium secondary battery comprising a sodium manganese-based oxide containing at least sodium (Na), nickel (Ni), manganese (Mn), and a doping metal (MD), wherein the content of manganese from among all metals excluding sodium is 55 mol% or more, the sodium manganese-based oxide is a secondary particle in which at least one primary particle is aggregated, and the aspect ratio of the primary particle is 1:1 to 1:2.5. La présente invention concerne un matériau actif d'électrode positive pour une batterie rechargeable au sodium, un procédé permettant de fabriquer un matériau actif d'électrode positive, une électrode positive pour une batterie rechargeable au sodium comprenant le matériau actif d'électrode positive, et une batterie rechargeable au sodium, le matériau actif d'électrode positive pour une batterie rechargeable au sodium comprenant un oxyde à base de manganèse de sodium contenant au moins du sodium (Na), du nickel (Ni), du manganèse (Mn) et un métal dopant (MD), la teneur en manganèse parmi tous les métaux à l'exclusion du sodium étant égale ou supérieure à 55 % en moles, l'oxyde à base de manganèse de sodium étant une particule secondaire dans laquelle au moins une particule primaire est agrégée, et le rapport d'aspect de la particule primaire étant 1:1 à 1:2,5. 본 발명은 적어도 소듐(Na), 니켈(Ni), 망간(Mn) 및 도핑 금속(MD)을 포함하며, 소듐을 제외한 전체 금속 중 망간의 함량이 55몰% 이상인 소듐 망간계 산화물을 포함하고, 상기 소듐 망간계 산화물은 적어도 하나의 1차 입자가 응집된 2차 입자이며, 상기 1차 입자의 종횡비가 1:1 내지 1:2.5 인 소듐 이차전지용 양극 활물질, 양극 활물질의 제조방법, 상기 양극 활물질을 포함하는 소듐 이차전지용 양극 및 소듐 이차전지를 제공한다.
Bibliography:Application Number: WO2023KR07830