Industry-University Cooperation Foundation Hanyang University

Seung Min Oh

Yang-Kook Sun

Yang Kook Sun

Sung-Woo Oh

Hyun-Joo Bang

Min Woo Jang

Disclosed is a method for producing a cathode active material precursor for a sodium secondary battery by using a coprecipitation technique and a cathode active material precursor for a sodium secondary battery produced thereby, and a cathode active material for a sodium secondary battery using the cathode active material precursor for a sodium secondary battery and a method for producing the same.

Manufacturing method of positive active material precursor for sodium rechargeable batteries, positive active material precursor for sodium rechargeable batteries made by the same, and manufacturing method of positive active material for sodium rechargeable batteries, positive active material for sodium rechargeable batteries made by the same

An olivine-type positive active material for a lithium battery, a lithium battery having the olivine-type positive active material, and a method of manufacturing the olivine-type positive active material are provided. The olivine-type positive active material includes a plurality of particles represented by LiMM'XOB. M and M&#x2032; are independently an element selected from the group consisting of Fe, Ni, Co, Mn, Cr, Zr, Nb, Cu, V, Mo, Ti, Zn, Al, Ga, Mg, B, and the combination thereof, X is one element selected from the group consisting of P, As, Bi, Sb, and the combination thereof, B is one element selected from the group consisting of F, S, and the combination thereof, 0&#x3c;x&#x2264;1, 0&#x3c;y&#x2264;1, 0&#x3c;z&#x2264;1, 0&#x3c;x+y+z&#x2264;2, and 0&#x2264;w&#x2264;0.5. The particle is a secondary particle having a plurality of primary particles, a first carbon coating layer is on the surface of the primary particle and a second carbon coating layer is on the surface of the secondary particle, and carbon is dispersed inside the primary particle.

Olivine-type cathode active material precursor for lithium battery, olivine-type cathode active material for lithium battery, method for preparing the same and lithium battery with the same

The present invention relates to a rechargeable battery comprising a non-aqueous electrolytic solution using an alkyl methanesulfonate as a solvent for dissolving the electrolytic salt, and can improve the life characteristics of the battery at high temperature and the high-temperature performance.

Rechargeable battery comprising non-aqueous electrolytic solution using alkyl methanesulfonate as solvent for dissolving electrolytic salt

The present invention provides an olivine-type positive active material precursor for a lithium battery that includes MXOB(wherein M is one element selected from the group consisting of Fe, Ni, Co, Mn, Cr, Zr, Nb, Cu, V, Ti, Zn, Al, Ga, Mg, B, and a combination thereof, X is one element selected from the group consisting of P, As, Bi, Sb, and a combination thereof, B is one element selected from the group consisting of F, S, and a combination thereof, and 0&#x2266;z&#x2266;0.5) particles, and the precursor has a particle diameter of 1 to 20 &#x3bc;m, a tap density of 0.8 to 2.1 g/cm, and a specific surface area of 1 to 10 m/g. The olivine-type positive active material prepared using the olivine-type positive active material precursor has excellent crystallinity of particles, a large particle diameter, and a high tap density, and therefore shows excellent electrochemical characteristics and capacity per unit volume.

Growing community of inventors

Gumi-si, South Korea

Seung Min Oh