摘要:
Aluminum dry-coated and heat treated cathode material precursors. A particulate precursor compound for manufacturing an aluminum coatedlithium transition metal (M)-oxide powder usable as an active positive electrode material in lithium-ion batteries includes a transition metal (M)-oxide core and a non-amorphous aluminum oxide coating layercovering the core. By providing a heat treatment process for mixed metal precursors that may be combined with an aluminum dry-coating process, novel aluminum containing precursors that may be used to form high quality nickel based cathode materials are obtained. The aluminum dry-coated and heat treated precursors include particles have, compared to prior art precursors, relatively low impurity levels of carbonate and/or sulfide, and can be produced at lower cost.
摘要:
Aluminum dry-coated and heat treated cathode material precursors. A particulate precursor compound for manufacturing an aluminum coated lithium transition metal (M)-oxide powder usable as an active positive electrode material in lithium-ion batteries includes a transition metal (M)-oxide core and a non-amorphous aluminum oxide coating layer covering the core. By providing a heat treatment process for mixed metal precursors that may be combined with an aluminum thy-coating process, novel aluminum containing precursors that may be used to form high quality nickel based cathode materials are obtained. The aluminum dry-coated and heat treated precursors include particles have, compared to prior art precursors, relatively low impurity levels of carbonate and/or sulfide, and can be produced at lower cost.
摘要:
The invention relates to cathode materials for Li-ion batteries in the quaternary phase diagram Li[Li1/3Mn2/3]O2—LiMn1/2Ni1/2O2—LiNiO2—LiCoO2, and having a high nickel content. Also a method to manufacture these materials is disclosed. The cathode material has a general formula Lia ((Niz(Ni1/2Mn1/2)yCox)1−kAk)2−aO2, wherein x+y+z=1, 0.1≦x≦0.4, 0.36≦z≦0.50, A is a dopant, 0≦k≦0.1, and 0.95≦a≦1.05, and having a soluble base content (SBC) within 10% of the equilibrium soluble base content.
摘要:
The invention relates to cathode materials for Li-ion batteries in the quaternary phase diagram Li[Li1/3Mn2/3]O2—LiMn1/2Ni1/2O2—LiNiO2—LiCoO2, and having a high nickel content. Also a method to manufacture these materials is disclosed. The cathode material has a general formula Lia((Niz(Ni1/2Mn1/2)yCox)1-kAk)2-aO2, wherein x+y+z=1, 0.1≦x≦0.4, 0.36≦z≦0.50, A is a dopant, 0≦k≦0.1, and 0.95≦a≦1.05, and having a soluble base content (SBC) within 10% of the equilibrium soluble base content.
摘要翻译:本发明涉及Li [Li1 / 3Mn2 / 3] O2-LiMn1 / 2Ni1 / 2O2-LiNiO2-LiCoO2四元相图中锂离子电池的阴极材料,镍含量高。 还公开了制造这些材料的方法。 阴极材料具有通式Li((Niz(Ni1 / 2Mn1 / 2)yCox)1-kAk)2-aO2,其中x + y + z = 1,0.1 @ x @ 0.4,0.36 @ z @ 0.50,A 是掺杂剂,0 @ k @ 0.1和0.95 @ a @ 1.05,并且具有可溶性碱含量(SBC)在平衡可溶性碱含量的10%以内。
摘要:
Disclosed are primary materials, precursor materials and final materials as well as methods to prepare these materials. The final materials are mixed lithium transition metal oxides, useful as performance optimized cathode materials for rechargeable lithium batteries. The transition metal is a solid solution mixture of manganese, nickel and cobalt, M=(Mn1-uNiu)1-u-yCoy, with 0.2
摘要:
The present invention provides a powdery composite precursor, which comprises a core of a lithium transition metal oxide, and an aluminum hydroxide-based precipitate layer coated on the surface of the core, and a process to prepare the composite precursor. The preparation process comprises the formation of a water based slurry by dispersing lithium transition metal oxide powder in water, and a precipitation reaction of an aluminum salt solution with a base solution where the lithium transition metal particles act as seed particles, whereby a mechanically stable precipitate layer of homogeneous thickness can be achieved. The composite precursor can be converted into aluminum-containing, e.g., aluminum-doped, lithium transition metal oxide suitable for a cathode active material of lithium rechargeable battery by heat treatment.
摘要:
This invention describes a heterogeneous metal bearing material, comprising a host material composed of primary particles agglomerated into secondary particles, and a particulate dopant material, characterised in that the particulate dopant material is homogeneously distributed within the secondary particles of said host material. In particular, the dopant material is TiO2 and the host material is either one or a mixture of NixMnyCO2 hydroxide, oxyhydroxide, and oxide, with 0≦x, y, z≦1, and x+y+z=1.
摘要翻译:本发明描述了一种异质金属轴承材料,其包含由附聚到二次颗粒中的初级颗粒组成的主体材料和颗粒状掺杂剂材料,其特征在于所述颗粒状掺杂剂材料均匀分布在所述主体材料的二次颗粒内。 特别地,掺杂剂材料是TiO 2,并且主体材料是NixMnyCO 2氢氧化物,羟基氧化物和氧化物中的一种或其混合物,其中0≤n1; x,y,z和nlE; 1和x + y + z = 1。
摘要:
Provided is a cathode material for a lithium secondary battery, comprising a heat-treated mixture of an oxide powder (a) represented by Formula I and an oxide powder (b) represented by Formula II, wherein a mixing ratio of the oxide powder (a):oxide powder (b) is in a range of 30:70 to 90:10, the oxide powder (a) is monolithic particles having a D50 of more than 10 μm, and the oxide powder (b) is agglomerated particles having a D50 of less than 10 μm, and heat treatment is carried out at a temperature of 400° C. or higher. LiCoO2 (I) LizMO2 (II) wherein 0.95
摘要:
The present invention provides a powdered lithium transition metal oxide useful as a major component for cathode active material of rechargeable lithium batteries, comprising a lithium transition metal oxide particle, a doped interface layer formed near the surface of the particle, and a thermodynamically and mechanically stable outer layer, and a method of preparing the same.