Samsung Sdi Co., Inc.

Jong-Hee Lee

Jae-Myung Kim

So-Ra Lee

Deok-Hyun Kim

Kyu-Nam Joo

Beom-Kwon Kim

Young-Su Kim

Gu-Hyun Chung

Yong-Mi Yu

Ui-Song Do

Chang-Su Shin

Tae-Sik Kim

Joa-Young Jeong

Sean Do

A composite anode active material includes matrix particles including lithium titanate; and at least one nanoparticle dispersed in the matrix particles. The at least one nanoparticle includes at least one selected from the group a metal capable of forming alloys with lithium and a non-transition metal oxide.

Composite anode active material, method of preparing composite anode active material, and anode and lithium battery including composite anode active material

A secondary particle and a lithium battery including the same are provided wherein the secondary particle includes a plurality of primary particles and each primary particle contains n polycyclic nano-sheets disposed upon one another. The polycyclic nano-sheets include hexagonal rings of six carbon atoms linked to each other, wherein a first carbon and a second carbon have a distance therebetween of L. Lis a distance between a third carbon and a fourth carbon, and the arrangement of the polycyclic nano-sheets is such that L&#x2267;L. The secondary particle is used as a negative active material in the lithium battery, and the secondary particle contains pores, thereby allowing for effective intercalating and deintercalating of the lithium ions into the secondary particle to impart improved capacity and cycle lifespan.

Secondary particle and lithium battery including secondary particle

A negative electrode for a lithium secondary battery that includes, as a negative active material, a lithium titanate (LiTiO) compound containing 0.004 parts by weight or less of phosphorous (P) and 0.007 parts by weight or less of potassium (K) based on 100 parts by weight of lithium titanate, a binder, and a conductive agent, and a lithium secondary battery including the negative electrode.

Lithium titanate, negative electrode including the lithium titanate, and secondary lithium battery containing the electrode

A negative active material comprising lithium titanate oxide having an area ratio of a diffraction peak of a (111) plane that appears at 2&#x3b8;=18.3&#xb0;&#xb1;0.4 to a diffraction peak of a (311) plane that appears at 2&#x3b8;=35.5&#xb0;&#xb1;0.4, in an XRD spectrum, in the range of about 2.2:1 to about 5.5:1, a negative electrode comprising the negative active material, a lithium secondary battery comprising the negative electrode, and a method of preparing the negative active material.

Negative active material, negative electrode including the same, lithium secondary battery including negative electrode, and method of preparing negative active material

A negative electrode active material, a method of preparing the negative electrode active material and a lithium secondary battery including the negative electrode active material are disclosed. A negative electrode active material includes a lithium titanate, wherein a portion of lithium of the lithium titanate is substituted by at least one selected from the group consisting of Sr, Ba, a mixture thereof and an alloy thereof, and thus a lithium secondary battery including the negative electrode active material may improve high-rate discharge characteristics.

Negative electrode active material, method for preparing the same and lithium secondary battery including negative electrode active material

A spherical primary particle of a lithium titanium oxide of which average diameter is in the range of about 1 to about 20 &#x3bc;m, a method of preparing the spherical primary particle of the lithium titanium oxide, and a lithium rechargeable battery including the spherical primary particle of the lithium titanium oxide.

Lithium titanium oxide, method of preparing lithium titanium oxide, and lithium rechargeable battery including lithium titanium oxide

A negative electrode for a lithium battery and a lithium battery including the negative electrode, the negative electrode including: a matrix of a Sn grain and a metal M grain; and a carbon-based material grown on the matrix.

Negative electrode for lithium battery and lithium battery including negative electrode

A negative electrode for a lithium ion secondary battery and a lithium ion secondary battery, the negative electrode including a multilayer film, the multilayer film having three or more layers on a metal base, wherein the multilayer film includes one or more porous layers.

Negative electrode for lithium ion secondary battery and lithium ion secondary battery including the same

A negative active material containing super-conductive nanoparticles coated with a high capacity negative material and a lithium battery including the same are provided, wherein the super-conductive nanoparticles have a structure in which polycyclic nano-sheets are stacked upon one another along a direction perpendicular to a first plane. The polycyclic nano-sheets include hexagonal rings of six carbons atoms linked to each other, wherein a first carbon and a second carbon have a distance therebetween of L. Lis a distance between a third carbon and a fourth carbon, and the arrangement of the polycyclic nano-sheets is such that L&#x2267;L. The super-conductive nanoparticle is used as a negative active material in a lithium battery, and the super-conductive nanoparticle increases the capacity, thereby improving the capacity and lifespan of the lithium battery.

Negative active material and lithium battery

An electrode conductive material, an electrode material including the electrode conductive material, an electrode including the electrode material, and a lithium battery including the electrode material. When the electrode conductive material is used, the amount of a conductive material required is decreased, capacity of the lithium battery is improved, and a charge and discharge rate is increased.

Electrode conductive material, electrode material including the conductive material, and electrode and lithium battery each including the electrode material

A negative active material, an electrode including the same, and a lithium battery including the electrode. The negative active material has no volumetric expansion and has high solubility with respect to lithium. In addition, the negative active material is in the form of spherical particles, and thus does not require a separate granulating process. Moreover, the negative active material may enhance the capacity of a lithium battery.

Negative active material, electrode including the same, and lithium battery including electrode

A negative electrode active material including nanometal particles and super-conductive nanoparticles and a lithium battery including the same.

Negative electrode active material containing nanometal particles and super-conductive nanoparticles and lithium battery comprising the negative electrode active material

A negative electrode for a lithium battery includes an active material layer and a current collector. The active material layer has a plurality of crystal grains and the plurality of crystal grains include a plurality of pores. A first pore of the plurality of pores has a first length and a second length, the first length being the maximum length orthogonal to the current collector and the second length being the maximum length orthogonal to the first length, and the first length is greater than the second length.

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Yongin-si, South Korea

Jong-Hee Lee