摘要:
A method of preparing a positive active material for a rechargeable lithium battery including a) mixing a composite metal precursor and a lithium compound; b) firing the mixture to prepare a positive active material; c) mixing the resulting positive active material, a carbon coating material, and a solvent; and d) heat-treating the resulting mixture to provide a positive active material coated with the carbon coating material, wherein the carbon coating material is used in an amount of 1 wt % to 30 wt % based on 100 wt % of the composite metal precursor, lithium compound, and carbon coating material, the firing is performed at 400 to 900° C., and the positive active material provided in d) is represented by the following Chemical Formula 1, is provided. LiaNixCoyMnzM′kO2 [Chemical Formula 1] In Chemical Formula 1, each definition is the same as in the detailed description.
摘要:
A positive active material for a rechargeable lithium battery including a lithium metal oxide represented by the following Chemical Formula 1, a method of preparing the same, and a rechargeable lithium battery including the same. LiaMeM′kO2 Chemical Formula 1 In Chemical Formula 1,Me is NixCoyMnz, M′ is Mg, Al, Fe, P, or a combination thereof, 0.955≦a
摘要:
A positive active material for a rechargeable lithium battery includes pores having an average diameter of about 10 nm to about 60 nm and a porosity of about 0.5% to about 20%. Also disclosed is a method of preparing the positive active material, and a rechargeable lithium battery including the positive active material.
摘要:
A positive active material for a rechargeable lithium battery includes pores having an average diameter of about 10 nm to about 60 nm and a porosity of about 0.5% to about 20%. Also disclosed is a method of preparing the positive active material, and a rechargeable lithium battery including the positive active material.
摘要:
A positive active material for a rechargeable lithium battery including a lithium metal oxide represented by the following Chemical Formula 1, a method of preparing the same, and a rechargeable lithium battery including the same. LiaMeM′kO2 Chemical Formula 1 In Chemical Formula 1, Me is NixCoyMnz, M′ is Mg, Al, Fe, P, or a combination thereof, 0.955a
摘要:
A method for preparing a positive active material for a rechargeable lithium battery includes: a) providing a furnace and a crucible that is included in the furnace; b) putting a mixture of a composite metal precursor and a lithium compound into the crucible; and c) preparing a positive active material for a rechargeable lithium battery by firing the mixture in the crucible, wherein during the process b), the mixture in the crucible is positioned so that a minimum distance from a predetermined position inside the mixture to an exterior of the mixture in the crucible is about 5 cm or less. A rechargeable lithium made by this method is disclosed.
摘要:
Disclosed is a positive active material precursor for a secondary lithium battery, which is represented by the following Chemical Formula 1 and has an intensity ratio of I100/I001 of more than or equal to about 2 of the peak I100 of a (001) plane peak to the peak I001 of a (100) plane peak according to X-ray diffraction analysis, a W100/W001 ratio of less than about 2 of the full width at half maximum W100 of a (100) plane peak to the full width at half maximum W001 of a (001) plane peak according to X-ray diffraction analysis, and an S100/S001 ratio of less than or equal to about 0.265 of the area S001 of a (001) plane peak and the area S100 of a (100) plane peak according to X-ray diffraction analysis. [Chemical Formula 1] NixCoyMnzMk(OH)2 wherein, M is a metal, 0.45≦x≦0.65, 0.15≦y≦0.25, 0.15≦y≦0.35, 0≦k≦0.1, and x+y+z+k=1.
摘要翻译:公开了二次锂电池的正极活性物质前体,其由以下化学式1表示,并且具有(001)面峰的峰I100的强度比I100 / I001大于或等于约2的强度比 根据X射线衍射分析,将(100)平面峰的峰值I001与(100)平面峰的半值全宽W100的半数相对于半数的全宽小于约2的W100 / W001比 (001)面峰值的最大W001,(001)面峰值的面积S001和a(100)的面积S100的S100 / S001比小于或等于约0.265 )平面峰。 [化学式1] NixCoyMnzMk(OH)2其中,M是金属,0.45和n1E; x和nlE; 0.65,0.15和nlE; y和nlE; 0.25,0.15和nlE; y和nlE; 0.35,0和nlE; k≦̸ 0.1和x + y + z + k = 1。
摘要:
A method for preparing a positive active material for a rechargeable lithium battery includes: a) providing a furnace and a crucible that is included in the furnace; b) putting a mixture of a composite metal precursor and a lithium compound into the crucible; and c) preparing a positive active material for a rechargeable lithium battery by firing the mixture in the crucible, wherein during the process b), the mixture in the crucible is positioned so that a minimum distance from a predetermined position inside the mixture to an exterior of the mixture in the crucible is about 5 cm or less. A rechargeable lithium made by this method is disclosed.
摘要:
In one aspect, a composite cathode active material including at least one large-diameter active material, and at least one small-diameter active material, a cathode including the composite cathode active material and a lithium battery including the cathode is provided.
摘要:
In one aspect, a composite cathode active material including at least one large-diameter active material, and at least one small-diameter active material, a cathode including the composite cathode active material and a lithium battery including the cathode is provided.