Positive electrode active material and positive electrode and lithium ion secondary battery including positive electrode active material
A positive electrode active material and secondary battery technology, applied in secondary batteries, battery electrodes, non-aqueous electrolyte battery electrodes, etc., can solve the problem of low capacity
Inactive Publication Date: 2013-10-02
LOTTE FINE CHEM CO LTD
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example 1
[0040] Weigh 10wt% LiFePO 4 and 90wt% 0.17Li 2 MnO 3 -0.83LiNi 0.58 co 0.20 mn 0.22 o 2 , and ball milled at 100rpm.
example 2
[0042] Weighing 20wt% LiFePO 4 and 80wt% 0.17Li 2 MnO 3 -0.83LiNi 0.58 co 0.20 mn 0.22 o 2 , and ball milled at 100rpm.
example 3
[0044] Weighing 30wt% LiFePO 4 and 70wt% 0.17Li 2 MnO 3 -0.83LiNi 0.58 co 0.20 mn 0.22 o 2 , and ball milled at 100rpm.
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The present invention refers to a positive electrode active material for a lithium ion secondary batter and a positive electrode and a lithium ion secondary battery including the positive electrode active material. The positive electrode active material includes layer-structured lithium metal oxide expressed by the following Chemical Formula 1 and at least one selected from the group consisting of spinel-structured lithium metal oxides and olivine-structured lithium metal oxides. xLiMO 2 (1-x)Li 2 MnO 3 (1) where M is one or more selected from the group consisting of nickel (Ni), cobalt (Co), and manganese (Mn), and 0<x<1.
Description
technical field [0001] Embodiments relate to a positive electrode active material for a lithium ion secondary battery and a lithium ion secondary battery including the positive electrode active material, and more particularly, to a layer comprising a lithium ion secondary battery Lithium metal oxide with a spinel structure and one or more positive electrode active materials selected from the group consisting of a lithium metal oxide with a spinel structure and a lithium metal oxide with an olivine structure, and a positive electrode comprising the Active materials for lithium-ion secondary batteries. Background technique [0002] Recently, with the demand for miniaturization and light weight of portable electronic devices such as mobile phones, notebook computers and personal digital assistants (PDAs), the characteristics of lithium (Li) ion secondary batteries (e.g. , high capacity, long life and high security) need to be improved. In addition, interest in electrification...
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IPC IPC(8): H01M4/505H01M4/131H01M10/0525
CPCH01M4/364H01M4/505H01M4/525H01M10/0525Y02E60/10H01M4/58H01M4/13H01M4/131
Inventor 李美善金世元尹弼相李斗均李昰渊赵偗任赵允珠曹海印崔信政
Owner LOTTE FINE CHEM CO LTD