Sk Innovation Co., Ltd.

Sk Energy Co., Ltd.

Yu Rim Do

Hyung Bok Lee

Hee Young Sun

Sung Woo Oh

Jeon Keun Oh

Jung Sik Yun

Sung Mo Yang

Provided is a method for preparing a positive electrode active material for a lithium secondary battery, the method comprising: mixing and reacting a nickel source, a cobalt source, and an aluminum source, ammonia water, sucrose, and a pH adjusting agent to prepare a mixed solution; drying and oxidizing the mixed solution to prepare a positive electrode active material precursor; and adding a lithium source to the positive electrode active material precursor and firing them to prepare a positive electrode active material for a lithium secondary battery.

Positive electrode active material for lithium secondary battery and method for preparing the same

The present invention relates to a positive electrode active material for a lithium secondary battery having improved thermal stability, a method for producing the positive electrode active material, and a lithium secondary battery containing the same. The positive electrode active material may be represented by the following Chemical Formula 1 and contain particles having an average particle size of 200 nm to 1 &#x3bc;m, wherein the surfaces of the particles are coated with a uniform carbon coating layer.LiMnMPO&#x2003;&#x2003;[Chemical Formula 1](Where, M is any one or a mixture of two or more selected from Mg, Fe, Co, Cr, Ti, Ni, Cu, Zn, Zr, Nb, and Mo, and a and x satisfy the following Equations: 0.9&#x2266;a&#x2266;1.1 and 0&#x2266;x&#x3c;0.5.).

Positive electrode active material for a lithium secondary battery, method for producing same, and lithium secondary battery comprising same

The present invention relates to a cooling structure of a lithium ion secondary battery system. The cooling structure of a lithium ion secondary battery system according to the present invention provides cooling channels for lithium battery unit cells accommodated by a laterally partitioned arrangement of main frames, each having a heat radiation part and lattice-shaped paths, and partitioning frames, and allows air, blown by a cooling fan, to cool the lithium battery unit cells while passing through the cooling channels and the lattice-shaped paths. Each of the main frames has a pair of passage slots formed in both sides thereof to allow the air blown by the cooling fan to be directly blown to each accommodated lithium battery unit cell, thus forming each secondary cooling channel communicating with the pair of passage slots.

Cooling structure of lithium ion secondary battery system

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Daejeon, South Korea

Yu Rim Do