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US 2018/0026266 A1Published application
Positive Active Material For Lithium Secondary Battery, Method For Producing Same, And Lithium Secondary Battery Comprising Same
AssigneeL&F Co., Ltd.
InventorsSu An Choi, Ho Jun Jeong, Sang Hoon Jeon, Su Youn Kwon, Ji Sun An, Bong Jun Jeong
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Abstract
Provided is a positive active material for a lithium secondary battery, which is a compound capable of reversible intercalation and deintercalation of lithium and having secondary particles formed by the aggregation of primary particles, wherein the size of crystal grains is between 0.0593 and 0.0610 μm at a (003) peak in the spectrum analysis of X-ray diffraction analysis.
Claims12
A positive active material for a lithium secondary battery, comprising
- a compound capable of reversible intercalation and deintercalation of lithium, wherein primary particles are aggregated into secondary particles, and
- the size of crystal grains is between 0.0593 and 0.0610 μm at a (003) peak in the spectrum analysis of X-ray diffraction analysis.
A method of producing a positive active material for a lithium secondary battery, comprising
- preparing a nickel composite hydroxide;
- and a lithium supplying material to prepare a mixture;
- and
- heat-treating the prepared mixture under an oxygen and/or air atmosphere to obtain a compound of Chemical Formula 1, Li[LizA(1-z-a)Da]EbO2-b
- (wherein, in Chemical Formula 1, A=NiαCoβMnγ, D is one or more element selected from the group consisting of Mg, Al, B, Zr, and Ti, E is one or more element selected from the group consisting of P, F, and S, −0.05≦z≦0.1, 0≦a≦0.05, 0≦b≦0.05, 0.6≦α≦0.81, 0.10≦β≦0.20, and 0.10≦γ≦0.20).
2 more elements
Dependencies are inferred from the claim text.