Samsung Sdi Co., Inc.

3m Innovative Properties Company

3m Innovation Properties Company

Min-Seok Sung

Yong-Mook Kang

Sung-Soo Kim

Goo-Jin Jeong

Sang-min Lee

Wan-Uk Choi

Nam-Soon Choi

Young-Hee Lee

Joon-Sup Kim

Sung-soo Kim

Sang-Min Lee

Kyou-Yoon Sheem

Leif Christensen

Sang-Jin Kim

Kyeu-Yoon Sheem

Yoshiaki Nitta

An active material for a rechargeable lithium battery is provided with a non-carbon-based material on which nanofiber-shaped carbon having an oxygen-included functional group is grown. The negative active material for a rechargeable lithium battery has good conductivity and cycle life characteristics.

Active material for rechargeable lithium battery and rechargeable lithium battery including the same

A negative active material for rechargeable lithium batteries and a method of manufacturing the negative active material are provided. The negative active material for rechargeable lithium batteries includes at least one generally spherical assembly having flake-shaped materials that are capable of doping and dedoping lithium, and are arranged in a generally spherical shape defining a central pore. The negative active material imparts improved cycle-life characteristics.

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

A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the negative active material have a negative active material including either Si or Sn active metal grains and a metal matrix composed of at least two metal elements that surrounds the active metal grains but does not react therewith.

Negative active material including Si active metal grains and Cu&#x2014;Al metal matrix surrounding Si active metal grains and rechargeable lithium battery including negative active material

An embodiment of the present invention provides an electrode for a rechargeable lithium battery, including: a current collector; and an active material layer on the current collector, wherein the active material layer includes an active material adapted to reversibly intercalate and deintercalate lithium ions, a binder, and a pore-forming polymer.

Electrode for a rechargeable lithium battery, and a rechargeable lithium battery fabricated therefrom

Negative active materials and rechargeable lithium batteries including the negative active materials are provided. The negative active material includes an intermetallic compound of Si and a metal, and a metal matrix including Cu and Al. The negative active material may provide a rechargeable lithium battery having high capacity and excellent cycle-life and cell efficiency.

Negative active material containing an intermetallic compound of silicon and a first metal and a metal matrix containing copper and aluminum for rechargeable lithium battery and rechargeable lithium battery containing the negative active material

A negative electrode for rechargeable lithium batteries includes a current collector, a porous active material layer having a metal-based active material disposed on the current collector, and a high-strength binder layer on the porous active material layer. The high-strength binder layer has a strength ranging from 5 to 70 MPa. The negative active material for a rechargeable lithium battery according to the present invention can improve cycle-life characteristics by suppressing volume expansion and reactions of an electrolyte at the electrode surface.

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

A negative active material for a rechargeable lithium battery includes Si active particles, and a 3-component to 7-component metal matrix that surrounds the active fine particles without reacting therewith. The negative active material shows high capacity and improved cycle-life characteristics.

Negative active material including silicon active particles surrounded by copper, aluminum and tin metal matrix and rechargeable lithium battery including the same

The negative electrode for a rechargeable lithium battery includes a current collector and a negative active material layer disposed on the current collector. The negative active material layer includes a metal-based negative active material and sheet-shaped graphite and has porosity of 20 to 80 volume %. The negative electrode for a rechargeable lithium battery can improve cell characteristics by inhibiting volume change and stress due to active material particle bombardment during charge and discharge, and by decreasing electrode resistance.

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

The present invention relates to an active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The active material includes an active material and a fiber-shaped or tube-shaped carbon conductive material attached to the surface of the active material. The active material includes a conductive shell including a fiber-shaped or tube-shaped carbon conductive material and increases discharge capacity due to improved conductivity and improves cycle-life efficiency by maintaining paths between active material particles during charge and discharge cycles.

Active material for rechargeable lithium battery and rechargeable lithium battery including same

A negative electrode for a lithium rechargeable battery is provided. The negative electrode includes a current collector, a thermosetting resin layer disposed on the current collector, and a negative active material layer disposed on the thermosetting resin layer. Metal ions in the current collector are diffused into the thermosetting resin layer, creating a concentration gradient of metal ions in the thermosetting resin layer. The metal ions diffused into the thermosetting resin layer react with the thermosetting resin to form metal compounds.

Growing community of inventors

Suwon-si, South Korea

Min-Seok Sung