Samsung Sdi Co., Inc.

Seung-Hun Han

Chae-Woong Cho

Myung-Duk Lim

Hye-Sun Jeong

Jun-Kyu Cha

Kwi-Seok Choi

Ki-Jun Kim

Hoyong An

Kijun Kim

Heeeun Yoo

Yeonhee Yoon

Bum-Jin Chang

Jaehwan Ha

Kyuseo Lee

Junghyun Nam

Woon-Suk Jang

Dongmyung Lee

Ki-jun Kim

Yiseop Ahn

Dongsik Yoon

Hyesun Jung

Myungduk Lim

Junghyun Lee

A rechargeable lithium battery includes a negative electrode including a negative current collector, a negative active material layer disposed on the negative current collector, and a negative electrode functional layer disposed on the negative active material layer; and positive electrode including a positive current collector and a positive active material layer disposed on the positive current collector, wherein the negative electrode functional layer includes flake-shaped polyethylene particles, the positive active material layer includes a first positive active material including at least one of a composite oxide of a metal selected from cobalt, manganese, nickel, and a combination thereof and lithium, a second positive active material including a compound represented by Chemical Formula 1, and carbon nanotubes, and the carbon nanotubes have an average length of 30 &#x3bc;m to about 100 &#x3bc;m.LiFeMPO&#x2003;&#x2003;Chemical Formula 1 In Chemical Formula 1, 0.90&#x2264;a&#x2264;1.8, 0&#x2264;x1&#x2264;0.7, and M is Mn, Co, Ni, or a combination thereof.

Rechargeable lithium battery

An embodiment of the present invention provides an electrode assembly in which a first electrode having a first electrode coated region and a first electrode uncoated region, a separator, and a second electrode having a second electrode coated region and a second electrode uncoated region are stacked and wound around a winding axis, wherein the first electrode coated region may include a first substrate, a first small electrode portion including first active material layers formed on both surfaces of the first substrate, and a second small electrode portion including a first active material layer formed on the other surface of the first substrate in which one surface thereof is exposed, and the second small electrode portion may be positioned at a first curved portion formed by first winding of the electrode assembly.

Electrode assembly, and rechargeable battery comprising same

In an aspect, a positive active material composition for a rechargeable lithium battery including a positive active material coated with a vanadium pentaoxide (VO) and an aqueous binder, a positive electrode including the same, and a rechargeable lithium battery including the positive electrode is disclosed.

Positive active material composition for rechargeable lithium battery, positive electrode prepared from composition, and rechargeable lithium battery including positive electrode

A positive electrode composition for a rechargeable lithium battery includes a positive active material, a binder, and an aqueous solvent, wherein the binder includes carboxylmethyl cellulose having an average polymerization degree of about 700 to about 1200, and a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided.

Positive electrode composition for rechargeable lithium battery, and positive electrode for rechargeable lithium battery and rechargeable lithium battery including same

A cathode and method of preparing the cathode are disclosed. The cathode includes a current collector, and a cathode active material layer disposed on the current collector, wherein the current collector includes a metal substrate, and a conductive protective layer disposed on at least a portion of the metal substrate, and the conductive protective layer includes one or more of a protrusion and a recess which react with base, a lithium battery including the cathode, and a method of preparing the cathode.

Cathode, lithium battery including the same, and method of preparing the cathode

A positive electrode for a lithium secondary battery is described which includes a lithium transition metal complex oxide including a lithium nickel based complex oxide and/or a lithium cobalt based complex oxide, active carbon having a specific surface area of from about 900 m/g to about 1600 m/g, and a water-based binder.

Positive electrode for lithium secondary battery and lithium secondary battery comprising the same

Disclosed are a positive active material for a rechargeable lithium battery including a core including a lithium nickel-based oxide, a lithium iron phosphate-based compound, or a combination thereof; and carbon nanotube grown on the surface of the core, and a rechargeable lithium battery including the same.

Positive electrode active material for rechargeable lithium battery, manufacturing method of same, and rechargeable lithium battery including same

Disclosed are a positive active material layer composition for a rechargeable lithium battery including a positive active material including a lithium metal oxide and tungsten oxide (WO) coated on the surface of the lithium metal oxide and an aqueous binder, and a rechargeable lithium battery using the same.

Positive active material layer composition for rechargeable lithium battery and rechargeable lithium battery using the same

A positive electrode material for a lithium battery, a positive electrode prepared from the positive electrode material, and a lithium battery including the positive electrode are disclosed. The positive electrode material includes a positive active material, an aqueous binder, and tungsten trioxide. Due to the inclusion of the positive active material, the aqueous binder, and the tungsten trioxide (WO), the positive electrode material may substantially prevent corrosion of an aluminum substrate. The positive electrode material has high electric conductivity. Lithium batteries including positive electrodes prepared from the positive electrode material have decreased resistance of the electrode plate, high rate characteristics, and good lifespan characteristics.

Positive electrode material for lithium battery, positive electrode prepared from the positive material, and lithium battery including the positive electrode

An electrode for a lithium secondary battery, the electrode including: an electrode active material; and a composite including a clay and a polymer intercalated between layers of the clay, a method of manufacturing the electrode, and a lithium secondary battery including the electrode.

Electrode for lithium secondary battery, method of manufacturing the same, and lithium secondary battery including the same

A cathode active material composition includes a cathode active material, a water-based binder, and a transition metal oxide. A cathode is prepared using the cathode active material composition. A lithium battery includes the cathode. The lithium battery has improved high-rate characteristics and lifespan characteristics by preventing an increase in internal resistance due to the corrosion of an electrode base material.

Cathode active material composition, cathode prepared by using the same, and lithium battery including the cathode

A positive active material composition for a rechargeable lithium battery that includes a positive active composite material including a compound being reversibly capable of intercalating and deintercalating lithium, WO, and a binder; and an aqueous binder, a positive electrode for a rechargeable lithium battery including the positive active material composition, and a rechargeable lithium battery comprising the positive electrode including the positive active material composition.

Positive active material composition for rechargeable lithium battery, positive electrode for rechargeable lithium battery including the positive active material composition, and rechargeable lithium battery including the positive active material composition

A rechargeable lithium battery includes a positive electrode including a positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator interposed between the positive and negative electrodes and including a ceramic material having a first metal oxide-containing core and a second metal oxide shell disposed on the surface of the core.

Growing community of inventors

Yongin-si, South Korea

Seung-Hun Han