Samsung Sdi Co., Inc.

Aekyung Chemical Co., Ltd.

Snur & Db Foundation

Jae-Hyuk Kim

Chang-Ui Jeong

Hee-Young Chu

Jong-Seo Choi

Sung-Hwan Moon

Soon-Sung Suh

Seung-Uk Kwon

Yury Matulevich

Yo-Han Park

Myung-Hwan Jeong

Young-Ugk Kim

Duk-Hyoung Yoon

Chun-Gyoo Lee

Yuri Matulevich

Mi-Hyun Lee

Eon-Mi Lee

Byung-Joo Chung

Suk-Ki Kim

Chang-Hyuk Kim

Dong-Hyun Kang

Kwang-Sik Choi

Ha-Na Yoo

Nam-Seon Kim

Yang-soo Kim

Joo-Han Song

Min-Suk Lee

Yang-Soo Kim

Matulevich Yuri

Seul-Cham Kim

Chan-Soon Kang

Oleg Leonidovith Andreev

Kyu-Hwan Oh

Leonidovith Andreev Oleg

Seoung-Bum Son

An anode active material including a porous silicon having pores with a uniform average pore diameter, wherein the average pore diameter of the pores is in a range of about 50 nm to about 80 nm, a method of preparing the anode active material, and a lithium secondary battery including an anode including the anode active material.

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

A positive active material for a rechargeable lithium battery includes a positive active material compound including a metal compound for intercalating and deintercalating lithium, a coating particle having an embedded portion embedded into the active material compound and a protruding portion protruding from the surface of the active material, and a rechargeable lithium battery including the positive active material.

Positive active material for rechargeable lithium battery, method of manufacturing the same and rechargeable lithium battery using the same

An electrode for a lithium secondary battery including a silicon-based alloy having an expansion coefficient of 10% or greater and an electrochemically inactive whisker, and a lithium secondary battery using the electrode for a lithium secondary battery.

Electrode for lithium secondary battery and lithium secondary battery comprising the same

An electrode active material for a lithium secondary battery, a method of preparing the electrode active material, an electrode for a lithium secondary battery which includes the same, a lithium secondary battery using the electrode. The electrode active material includes a core active material and a coating layer including magnesium aluminum oxide (MgAlO) and formed on the core active material. 1s binding energy peaks of oxygen (O) in the electrode active material measured by x-ray photoelectron spectroscopy (XPS) are shown at positions corresponding to 529.4&#xb1;0.5 eV, about 530.7 eV, and 531.9&#xb1;0.5 eV, and a peak intensity at the position corresponding to 529.4&#xb1;0.5 eV is stronger than a peak intensity at the position corresponding to about 530.7 eV.

Electrode active material for lithium secondary battery, method of preparing the electrode active material, electrode for lithium secondary battery including the same, and lithium secondary battery using the same

An electrode for a lithium secondary battery includes a silicon-based alloy, and has a surface roughness of about 1 to about 10 &#x3bc;m and a surface roughness deviation of 5 &#x3bc;m or less. A method of manufacturing the electrode includes mixing an electrode composition, milling the composition, coating the milled composition on a current collector, and drying the milled composition. A lithium secondary battery includes the electrode.

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

A negative active material, a negative electrode, a lithium battery including the negative active material, and a method of manufacturing the negative active material, the negative electrode, and the lithium battery. The negative active material includes a silicon-based alloy including Si, Ti, Ni, and Fe components. The silicon-based alloy includes a TiNi phase as an inactive phase and active silicon having a lower content than that of typical silicon-based alloys. The negative active material may improve discharge capacity and lifetime characteristics of lithium batteries.

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

Disclosed is a solid electrolyte including particles comprising LiTiAl(PO)(0&#x2266;x&#x2266;1) having a true density of about 2.20 to about 2.50 g/cm.

Solid electrolyte, method for preparing same, and rechargeable lithium battery comprising solid electrolyte and solid electrolyte particles

A binder composition for a rechargeable lithium battery includes a semi-interpenetrating polymer network (semi-IPN) including a copolymer including a repeating unit represented by the following Chemical Formula 1 and a repeating unit represented by the following Chemical Formula 2 and polyacrylamide, and polyalkylene glycol.  In Chemical Formula 1, Rand Rare the same or different and are independently selected from hydrogen, or a substituted or unsubstituted C1 to C10 alkyl group, and Rand Rare an alkali metal. In Chemical Formula 2, Rto Rare the same or different, and are independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C1 to C30 alkoxy group.

Binder composition for rechargeable lithium battery, preparing method of same, and rechargeable lithium battery including binder composition

A negative active material, a negative electrode and a lithium battery including the same, and a method of manufacturing the negative active material are disclosed. The negative active material includes a silicon-based alloy including Si, Al, and Cu. Since the silicon-based alloy includes AlCu and AlCu as inactive phases, the lifespan of a lithium battery may be increased.

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

A binder composition for a rechargeable lithium battery includes a semi-interpenetrating polymer network (semi-IPN) including a copolymer including a repeating unit represented by the following Chemical Formula 1 and a repeating unit represented by the following Chemical Formula 2, and polyacrylamide.  In Chemical Formula 1, Rand Rare the same or different and are independently selected from hydrogen, or a substituted or unsubstituted C1 to C10 alkyl group, and Rand Rare an alkali metal. In Chemical Formula 2, Rto Rare the same or different, and are independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C1 to C30 alkoxy group.

A negative active material, a lithium battery including the negative active material, and a method of preparing the negative active material. The negative active material includes a silicon-based alloy including Si, Al, and Fe. The silicon-based alloy includes an active phase of silicon nanoparticles and an inactive phase of SiAlFeand SiFe in a ratios suitable to improve the lifespan of the lithium battery.

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

A negative active material for a rechargeable lithium battery includes a Si&#x2014;Al&#x2014;Fe alloy represented by Formula 1. The Si&#x2014;Al&#x2014;Fe alloy includes a Si phase and an alloy phase, and the alloy phase includes Si, Al, and Fe in a ratio of atomic percentages of about 3:3:2:Si-Al-Fe&#x2003;&#x2003;Formula 1wherein 50 at %&#x2266;x&#x2266;90 at %, 5 at %&#x2266;y&#x2266;30 at %, 5 at %&#x2266;z&#x2266;30 at %, and x+y+z=100 at %.

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

A positive active material for a rechargeable lithium battery, a method of manufacturing the same, and a rechargeable lithium battery using the same, the positive active material including a secondary particle formed of a plurality of primary particles, the primary particles being made of a metal compound capable of intercalating/deintercalating lithium; and a coating layer on a surface of the secondary particle in an island arrangement, the coating layer including a metal oxide, wherein the secondary particle includes pores formed by the primary particles, the pores including a surface pore on the surface of the secondary particle and an internal pore inside the secondary particle, and the metal oxide of the coating layer fills a portion of the surface pore of the secondary particle.

A negative active material for a lithium battery with an improved cycle characteristic and capacity retention rate, and the negative active material comprises a plurality of particles comprising a plurality of first particles comprising Si, Ti, and Ni; and composite particles comprising a plurality of second particles in which at least one element selected from the group consisting of Cu, Fe, Ni, Au, Ag, Pd, Cr, Mn, Ti, B, and P is partially or completely deposited on surface(s) of other of first particles, a method of preparing the negative active material, and a lithium battery including a negative electrode including the negative active material.

Negative active material for lithium battery, method of preparing the negative active material, and lithium battery employing the negative active material

In an aspect, an electrode active material for a lithium secondary battery, the electrode active material including a silicon-based alloy and a coating film containing a polymer that includes a 3,4-ethylenedioxythiophene repeating unit and an oxyalkylene repeating unit, coated on the surface of the silicon-based alloy are provided.

Electrode active material for lithium secondary battery, electrode for lithium secondary battery including the same, and lithium secondary battery including the electrode

Growing community of inventors

Yongin-si, South Korea

Jae-Hyuk Kim