Samsung Sdi Co., Inc.

Hankyong Industry Academic Cooperation Center

Young-Kee Kim

Sun-Il Park

Sumihito Ishida

Jin-Man Jeoung

Soojeong Lee

Jeong-Woo Han

Jinwon Lee

Eui-Hwan Song

Jung-Woo An

Yeon-Joo Choi

Sujin Um

Dong-Hyun Shin

Joon-Kil Son

Ishida Sumihito

Soeun Park

Sung-Hyun Lim

A negative active material for a rechargeable lithium battery includes a lithium titanate compound represented by Chemical Formula 1, where R, a Raman spectrum intensity ratio (I(F2u)/I(F2g)) of an F2u peak in a range of about 200 cmto about 300 cmrelative to an F2g peak in a range of about 400 cmto about 550 cmis greater than or equal to about 0.7.LiTiMO&#x2003;&#x2003;Chemical Formula 1 In Chemical Formula 1, &#x2212;0.2&#x2264;x&#x2264;0.2, &#x2212;0.3&#x2264;y&#x2264;0.3, 0&#x2264;z&#x2264;0.3, &#x2212;0.3&#x2264;n&#x2264;0.3, and M is selected from Mg, Al, Ca, Sr, Cr, V, Fe, Co, Ni, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, W, Ba, La, Ce, Ag, Ta, Hf, Ru, Bi, Sb, As, and a combination thereof.

Negative active material for rechargeable lithium battery and rechargeable lithium battery comprising same

In an aspect, a positive electrode for a lithium rechargeable battery including a current collector; a positive active material layer disposed on the current collector, wherein the positive active material layer includes a positive active material, active carbon, and an additive.

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

A negative electrode for a rechargeable lithium battery includes a negative active material including a titanium-containing oxide and amorphous carbon. The titanium-containing oxide is present in a larger amount than the amorphous carbon.

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

A negative electrode composition for a rechargeable lithium battery. The negative electrode includes a negative active material and crystalline carbon conductive material, wherein the negative active material includes soft carbon, and the crystalline carbon conductive material includes graphite having an average particle diameter (D90) of about 1 micrometer to about 20 micrometers.

Negative electrode composition for rechargeable lithium battery, negative electrode comprising same and rechargeable lithium battery comprising same

An electrolyte for a rechargeable lithium battery, the electrolyte including a lithium salt, a non-aqueous organic solvent, a first additive represented by Chemical Formula 1, and a second additive represented by Chemical Formula 2 is disclosed. A rechargeable lithium battery including the electrolyte is also disclosed. The structures and definitions of the Chemical Formulae 1 and 2 are the same as described in the detailed description.

Electrolyte and rechargeable lithium battery including the same

An electrolyte for rechargeable lithium battery includes a lithium salt, a non-aqueous organic solvent, a first additive represented by the following Chemical Formula 1, and a second additive represented by the following Chemical Formula 2. A rechargeable lithium battery includes the electrolyte.

Electrolyte for rechargeable lithium battery and rechargeable lithium battery including same

A positive active material for a rechargeable lithium battery includes a porous material including primary particles, and secondary particles including aggregates of a plurality of the primary particles. The porous material has a tap density of 0.3 to less than 1.0 g/cc. A positive electrode includes the positive active material. A rechargeable lithium battery includes the positive electrode including the positive active material.

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

A rechargeable lithium battery module includes a first rechargeable lithium battery cell combined with a second rechargeable lithium battery cell, the first rechargeable lithium battery cell being the same or different than the second rechargeable lithium battery cell, and the rechargeable lithium battery module has an output voltage of about 13.6 V to about 15.6 V.

Lithium rechargeable battery module

A solid oxide fuel cell (SOFC) of improved current collecting efficiency including, an anode, a cathode, an electrolytic layer between the anode and the cathode, and a current collector in an interior space defined by the anode and comprising a current collecting wire layer having a multiple-layered structure including a metal wire and a coating layer on an outer circumferential surface of the metal wire and having a higher melting point than that of the metal wire.

Solid oxide fuel cell comprising a coated wire current collector

Disclosed is a method for producing a bioalcohol based on the fermentation of syngas. The method includes adding hydrophilic nanoparticles surface modified with hydrophobic groups to a culture medium for fermentation. Also disclosed are hydrophilic nanoparticles surface modified with hydrophobic groups for enhancing bioalcohol yield. The hydrophilic nanoparticles may be, for example, silica nanoparticles.

Method for producing bio-alcohol using nanoparticles

A PDP includes first and second substrates facing each other, a plurality of address electrodes disposed on one surface of the first substrate, a first dielectric layer covering the address electrodes, barrier ribs disposed between the first substrate and the second substrate and partitioning a plurality of discharge cells, a phosphor layer disposed in the discharge cells, a plurality of display electrodes disposed in a direction generally perpendicular to the address electrodes and positioned on the surface of the second substrate facing the first substrate, a second dielectric layer covering the display electrodes, and a protective layer covering the second dielectric layer. The protective layer includes particles of strontium oxide (SrO).

Growing community of inventors

Yongin-si, South Korea

Young-Kee Kim