Samsung Sdi Co., Inc.

Yong-Mi Yu

Jong-Hee Lee

Jae-Myung Kim

So-Ra Lee

Deok-Hyun Kim

Kyu-Nam Joo

Beom-Kwon Kim

Young-Su Kim

Gu-Hyun Chung

Ui-Song Do

Chang-Su Shin

Tae-Sik Kim

Joa-Young Jeong

Jong-ho Lee

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 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

A lithium titanium oxide for an anode active material of a lithium rechargeable battery, wherein a X-ray diffraction (XRD) spectrum has a first peak of LiTiOand a second peak, and A/Ais in a predetermined range, as a result of XRD analysis, where Ais an Area of the first peak and Ais an Area of the second peak in XRD.

Lithium titanium oxide for anode active material for lithium rechargeable battery, method of preparing lithium titanium oxide, and lithium rechargeable battery including lithium titanium oxide

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

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Yongin-si, South Korea

Yong-Mi Yu