Samsung Sdi Co., Inc.

So-Ra Lee

Sung-Soo Kim

Jae-Myung Kim

Beom-Kwon Kim

Kyu-Nam Joo

Ui-Song Do

Chang-Su Shin

Deok-Hyun Kim

Young-Su Kim

Gu-Hyun Chung

Jong-Hee Lee

Sang-Eun Park

Su-Kyung Lee

Yong-Mi Yu

Yu-Jeong Cho

Jun-Sik Kim

Hee-Sung Moon

Ha-Na Yoo

Tae-Sik Kim

Hyun-Ki Park

Yoon-Jin Kim

Sung-soo Kim

Yoon-Chang Kim

Seok-Gyun Woo

Do-Hyung Park

Jong-Ki Lee

Man-Seok Han

Kyeu-Yoon Sheem

Jake Kim

Duk-Hyoung Yoon

Jeong-Soon Shin

Jong-ho Lee

Seol-Ah Lee

Young-Suk Cho

Chong-Hoon Lee

Man-Sik Cho

Jung-Yeon Won

Seung-wan Kim

Myung-Hoon Kim

Hye-Ri Eom

Jeong-soon Shin

Min-Hwan Kim

Sean Do

Soo-An Song

A secondary battery includes a base material, an intermediate layer including a carbon material on the base material, and an active material layer on the intermediate layer. A secondary battery including an intermediate layer may improve adhesion between the base material and the active material layer, thereby reducing the risk of separation of the active material from the base material and improving the reliability and lifetime of the secondary battery.

Secondary battery

A battery pack that prevents arbitrary disassembly, and yet, that can be separated, includes a battery cell, a case for accommodating the battery cell therein, and a holder enclosing the case. A first engagement portion is formed on an outer surface of the case, and a second engagement portion is formed on an inner surface of the holder for coupling with the first engagement portion.

Battery pack

A negative active material, a method of preparing the same, and a lithium battery including the negative active material are disclosed. The negative active material includes a silicon-based nanocore and a first amorphous carbonaceous coating layer that is formed of carbonized organic material and that is uniformly and continuously formed on a surface of the silicon-based nanocore, whereby irreversible capacity losses due to volumetric expansion/contraction caused when a lithium battery is charged and discharged are compensated and cycle lifetime characteristics are enhanced.

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

Provided is a lithium battery including: a positive electrode, a negative electrode, and an organic electrolytic solution, wherein the negative electrode has a metal/metalloid nanostructure, and the organic electrolytic solution includes a lithium sulfonimide-based compound.

Lithium battery

Provided are a composition for a negative electrode, and a negative electrode and lithium battery including the composition. The composition includes a negative active material that contains one or more of a metal or a metalloid, an acrylate-based binder, and a guanidine carbonate.

Negative electrode composition, and negative electrode and lithium battery containing the same

A negative electrode includes a current collector; and a negative active material layer on at least a surface of the current collector. The negative active material layer includes a porous matrix including lithium titanium oxide particles and metal nanoparticles that are alloyable with lithium. An average particle diameter of the lithium titanium oxide particles is at least two times greater than an average particle diameter of the metal nanoparticles.

Negative electrode, lithium battery including the same and method of manufacturing lithium battery

A negative active material includes a conductive unit bound in island-like form to silicon-based nanowires on a carbonaceous base. Such negative active material may improve the electrical conductivity of the silicon-based nanowires, and suppress separation of the silicon-based nanowires caused from volume expansion, and thus may improve lifetime characteristics of a lithium battery.

Negative active material, negative electrode, and lithium battery

A negative active material and a lithium battery including the negative active material. The negative active material includes a non-carbonaceous nanoparticle capable of doping or undoping lithium; and a crystalline carbonaceous nano-sheet, wherein at least one of the non-carbonaceous nanoparticle and the crystalline carbonaceous nano-sheet includes a first amorphous carbonaceous coating layer on its surface, and thus an electrical conductivity thereof is improved. In addition, a lithium battery including the negative active material has an improved efficiency and lifetime.

Negative active material and lithium battery including negative active material

In one aspect, an anode active material is provided. The anode active material may include a crystalline carbon-based material that includes a core having a lattice spacing dof about 0.35 nm or more, and titanium-based oxide particles.

Anode active material, anode and lithium battery including the material, and method of preparing the material

Provided are a negative active material, a method of preparing the same, and a lithium battery including the negative active material, wherein the negative active material includes a carbonaceous material that has a peak with respect to a surface (002) at a Bragg angle 2&#x3b8; of 26.4&#xb0;&#xb1;0.1&#xb0; in an X-ray diffraction spectrum, has a full width at half maximum of the peak with respect to the surface (002) of about 0.2&#xb0; to about 0.6&#xb0;, has an interlayer spacing (d) of the surface (002) measured by X-ray diffraction of about 3.36 &#x212b; to about 3.37 &#x212b;, and has a crystallite size measured from the full width at half maximum of the peak with respect to the surface (002) of about 10 nm to about 45 nm, wherein the carbonaceous material includes a core; and an amorphous carbon layer disposed on a non-cracked surface portion of the core.

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

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

In an aspect, a negative active material, a method of preparing the negative active material, and a lithium battery including the negative active material are provided. The method of preparing the negative active material may increase pulverizing efficiency in pulverizing a silicon-based bulky particle into a nano-size silicon-based primary particle and decrease a capacity loss of the obtained negative active material. The nano-size negative active material has excellent crystalline characteristics, high capacity, and high initial efficiency, due to a decrease in surface oxidation and surface damage.

Negative active material, method of manufacturing the same, and lithium battery including the negative active material

A piezoelectric element layer is further formed as a package material of a secondary battery, so that the secondary battery can be self-charged using a voltage generated in the piezoelectric element layer according to vibration generated in an electronic device and vibration generated by movement of the electronic device itself. The secondary battery includes a battery case that accommodates an electrode assembly, the battery case having an outer coating layer and a piezoelectric element layer formed on an inner surface of the outer coating layer, and a protection circuit module mounted to an outside of the battery case and electrically connected to the electrode assembly. In the secondary battery, a voltage storage is provided to the protection circuit module, and the piezoelectric element layer converts absorbed vibration into voltage and then stores the voltage in the voltage storage so that the secondary battery is self-charged as occasion demands.

A composite anode active material, an anode and a lithium battery each including the composite anode active material, and a method of preparing the composite anode active material. The composite anode active material includes a composite core, and a coating layer covering at least a region of the composite core, wherein the composite core includes a carbonaceous substrate and a metal/semi-metal nanostructure on the carbonaceous substrate, the coating layer is more predominant on the nanostructure than on the carbonaceous substrate, and the coating layer includes a metal oxide.

Composite anode active material, anode and lithium battery comprising the material, and method of preparing the same

In an aspect, a composite anode active material including: a porous particles, said porous particles including: a plurality of composite nanostructures; and a first carbonaceous material binding the composite nanostructures, wherein the porous particles have pores within the particle, and wherein the composite nanostructures include a crystalline second carbonaceous material substrate including at least one carbon nano-sheet, and a plurality of metal nanowires arranged at intervals on the crystalline second carbonaceous material substrate is disclosed.

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Yongin-si, South Korea

So-Ra Lee