Samsung Sdi Co., Inc.

Sang-In Park

Eun-Young Goh

Jin-Hyon Lee

Jong-Ki Lee

Ji-Woon Lee

Sung-Yong Kim

Jin-Seon Shin

Yong-Chan You

Ki-Hyun Kim

Ji-Hyun Kim

Jay-Hyok Song

Ha-Young Lee

Jun-Won Suh

Chang-Wook Kim

Ju-Hee Sohn

Han-Eol Park

Jae-Won Choi

Jung-Yeon Won

Bo-Hyun Kim

Yu-Jin Han

Sang-Woo Cho

Jae-Hong Lim

Hye-Jin Kwon

Ji-hyun Kim

Eun-Yong Goh

A positive active material, a method of preparing the positive active material, a positive electrode including the positive active material, and a lithium battery including the positive active material are disclosed. The positive active material includes a core and a coating layer on the core. The coating layer includes a sulfur component. When a binding energy peak of the sulfur is measured by X-ray photoelectron spectroscopy (XPS), the binding energy peak is observed at about 165 eV to about 168 eV, and the stability of the positive active material may be improved due to the coating layer. Accordingly, the lifespan properties of a lithium battery including the positive active material may be improved.

Positive active material, positive electrode, and lithium battery including the same and method of manufacture thereof

Provided are a negative electrode for a rechargeable lithium battery including a negative active material and a conductive material wherein the negative active material includes graphite and an inorganic particle positioned on the surface of the graphite and having no reactivity with lithium, and the conductive material is included in an amount of greater than or equal to about 0.1 wt % and less than about 2 wt % based on the total amount of the negative active material and the conductive material, and a rechargeable lithium battery including the same.

Negative electrode for rechargeable lithium battery and rechargeable lithium battery including same

There is provided a manufacturing method of an electrode assembly, the method including blanking a first electrode from a first base including a first coated region and a first uncoated region, blanking a second electrode from a second base including a second coated region and a second uncoated region, laminating a separator on the second electrode, cutting the laminated second electrode with the separator, and stacking the laminated second electrode and the first electrode.

Electrode assembly, manufacturing method thereof, and rechargeable battery

A rechargeable battery includes an electrode assembly including a first electrode, a second electrode, and a separator interposed therebetween, a center pin at a center of the electrode assembly, the center pin including a bonding portion electrically coupled to the first electrode, and a terminal portion connected to one end of the bonding portion, a case housing the electrode assembly, and a gasket insulating between the center pin and the case, the gasket enclosing an edge of the terminal portion of the center pin.

Rechargeable battery

A rechargeable battery module that effectively imparts a curvature using a rechargeable battery formed as a pin-shaped rechargeable battery with a very small diameter is provided. The rechargeable battery module includes a plurality of rechargeable batteries arranged in parallel, wherein each rechargeable battery comprises a case and terminals that extend from respective ends of the case along a length direction of the case. The module includes a plurality of caps, wherein each cap is coupled to an end of a rechargeable battery of the plurality of rechargeable batteries and is electrically connected to one of the terminals of the rechargeable battery. The module also includes a connector on each cap connecting adjacent caps coupled to corresponding rechargeable batteries. The adjacent caps are moveable relative to the connector such that a curvature between the corresponding rechargeable batteries changes in a direction crossing the length direction.

Rechargeable battery module

A rechargeable battery includes: an electrode assembly including a first electrode, a second electrode, and a separator, the first and second electrodes being located on either side of the separator and wound together; a center pin located within the electrode assembly and electrically connected to an uncoated region of the first electrode; a case accommodating the electrode assembly and electrically connected to an uncoated region of the second electrode; a terminal extending to the outside of the case from the center pin; and a gasket located between the terminal and an opening of the case and sealing the opening.

Pin-type rechargeable battery

A rechargeable battery according to an exemplary embodiment of the present invention includes an electrode assembly including: a first electrode plate including first and second coated regions where an active material layer is formed and a first uncoated region positioned between the first and second coated regions and not formed with the active material layer and folded at the first uncoated region; a second electrode plate inserted between the first electrode plate; and a first separator inserted between the first and second electrode plates, and a first electrode tab bonded to the first uncoated region, wherein the first electrode plate, the second electrode plate, and the first separator are wound after they are stacked.

Rechargeable battery having electrode tap and manufacturing method thereof

The present invention provides a positive active material including a lithium-containing compound represented by the following Chemical Formula 1 and a rechargeable lithium battery including the positive active material.LiFeMM'PO.&#x2003;&#x2003;Chemical Formula 1

Positive active material and rechargeable lithium battery including same

An electrode for a rechargeable battery and a rechargeable battery, the electrode including a current collector; an electrode active material layer; and an electrolyte solution impregnation layer, wherein the electrolyte solution impregnation layer includes a metal oxide and a conductive material.

Electrode for rechargeable lithium battery and rechargeable lithium battery including the same

Disclosed is a pin-type rechargeable battery having a micro diameter for increasing an energy density at a preset volume. The rechargeable battery includes: an electrode assembly formed by winding a second electrode around an external circumference of a first electrode disposed at a center thereof by interposing a separator; a case to receive the electrode assembly and an electrolyte solution therein and electrically connected to the second electrode; a terminal electrically connected to the first electrode and drawn outside of the case; and a gasket disposed between the terminal and an opening of the case to close the opening of the case.

A rechargeable battery includes a wound electrode assembly having first and second electrodes at opposite surfaces of a separator; a first case accommodating a first side of the electrode assembly and being coupled to the first electrode; a second case accommodating a second side of the electrode assembly and coupled to the second electrode; and a gasket engaged by the electrode assembly and combined at the first and second openings to seal the first and second openings.

A rechargeable lithium battery includes a separator between a positive electrode and a negative electrode. The positive electrode has a positive electrode coating region and a positive electrode uncoated region. A positive active material is coated to a positive electrode current collector in the positive electrode coating region, and the positive active material is not coated in the positive electrode uncoated region. The negative electrode includes a negative electrode coating region and a negative uncoated region. A negative active material is coated to a negative electrode current collector in the negative electrode coating region, and the negative active material is not coated and a lithium source is in the negative uncoated region. The negative electrode coating region includes an active region corresponding to the positive electrode coating region. The lithium source is at the negative electrode and separated from an end of the active region by a predetermined interval.

Rechargeable lithium battery

A rechargeable battery includes an electrode assembly having first and second electrodes at opposite sides of a separator and wound about an axis; a first terminal coupled to the first electrode through a first tab; a second terminal coupled to the second electrode through a second tab; a case accommodating the electrode assembly and including first and second openings at its opposite ends; a first gasket between the first terminal and the first opening, the first gasket sealing the first opening and allowing the first terminal to protrude outside of the case; and a second gasket between the second terminal and the second opening, the second gasket sealing the second opening and allowing the second terminal to protrude outside of the case. The case may further include a fixing portion at its inner side that protrudes toward the electrode assembly.

Provided are a positive active material that has a decreased amount of Li-containing impurities that remain on a lithium transition metal composite oxide surface to decrease an amount of gas generation and has improved lifespan properties, a method of preparing the same, a positive electrode for a lithium secondary battery including the positive active material, and a lithium secondary battery including the same.

Positive active material, preparing method thereof, positive electrode for lithium secondary battery including the same, and lithium secondary battery employing the same

Provided is a positive electrode for a rechargeable lithium battery including a positive active material including a lithium phosphate compound particle and fiber-type carbon attached inside the lithium phosphate compound particle, a method of preparing the same, and a rechargeable lithium battery including the same.

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Yongin-si, South Korea

Sang-In Park