Research Institute of Industrial Science & Technology

Posco

Posco Co., Ltd

Geun Hwangbo

Sang Cheol Nam

Jung Hoon Song

Sang Hyuk Lee

Jong Pal Hong

Jong Il Park

Gyeong Rye Choi

Jae Myung Lee

Do Hyeong Kim

Hye Won Park

The present disclosure relates to a positive electrode additive for a lithium secondary battery, a manufacturing method thereof. The positive electrode additive for a lithium secondary battery is represented by Chemical Formula 1 below.LiCoMO  [Chemical Formula 1] (In the Chemical Formula 1, 0.9≤x≤1.1, 0<y≤0.1, My=BW, 0≤a≤0.1, 0≤b≤0.1, and, a and b are not simultaneously 0.) Another positive electrode additive for a lithium secondary battery includes a core represented by Chemical Formula 2 below; and a coating layer comprising at least one of boron (B) and tungsten (W).LiCoO  [Chemical Formula 2] (In the Chemical Formula 2, 0.9≤x≤1.1.)

Cathode additive for lithium secondary battery, preparation method therefor, cathode for lithium secondary battery, comprising same, and lithium secondary battery comprising same

The present disclosure relates to a positive active material for a lithium rechargeable battery, a manufacturing method thereof, and a lithium rechargeable battery including the positive active material, and it provides a positive active material which is a lithium composite metal oxide including nickel, cobalt, and manganese, and either has orientation in a direction of with respect to an ND axis that is equal to or greater than 29% or has orientation in a direction of [120]+[210] with respect to an RD axis that is equal to or greater than 82% in the case of an EBSD analysis with a misorientation angle (Δg) that is equal to or less than 30 degrees.

Positive active material for lithium rechargeable battery, manufacturing method thereof, and lithium rechargeable battery including same positive active material

A method of manufacturing core-shell particles comprises: filling a buffer into a rotor, which is extended in a longitudinal direction, and is accommodated so as to be spaced apart from an inner wall side of a non-rotational hollow cylinder extended in a longitudinal direction and then discharging air to outside; rotating the rotor after terminating the filling; forming a core-shell precursor by supplying raw materials from a first storage and a second storage, which comprise a material forming a core, into an interior of the cylinder in which the rotor rotates; supplying a shell material for coating the core to the interior of the cylinder in which a core-type precursor is formed; separating a liquid comprising core-shell particles formed through the supplying into a solid and a liquid; and drying the core-shell particles obtained through the separating.

Method of preparing core-shell particles

Growing community of inventors

Incheon, South Korea

Geun Hwangbo