Lg Chem, Ltd

Ulsan National Institute of Science and Technology

Lg Energy Solution, Ltd.

Unist-Academy Industry Research Corporation

Hye Ran Jung

Je Young Kim

Yong Ju Lee

Mi Rim Lee

Jae Phil Cho

Jung In Lee

Soo Jin Park

Yoon Ah Kang

Dong Sub Jung

Song Taek Oh

Young Geun Choi

Seung Youn Choi

Sang Young Lee

Jung Woo Yoo

Yo Han Kwon

Eun Hye Kil

Keun Ho Choi

An electrode assembly of the present invention comprises a cathode active material layer, a cathode current collector, a separator, an anode current collector, and an anode active material layer, which are stacked in order, wherein the current collectors have a plurality of through-holes formed to allow communication between the upper surface and the lower surface of the current collector. The electrode assembly of the present invention has the effect of preventing a rapid temperature increase if an internal short caused by damage to the separator occurs.

Electrode assembly having enhanced safety and lithium secondary battery comprising same

The present invention relates to a separator for a lithium secondary battery, which includes a porous substrate, and a lithium metal layer formed on one side of the porous substrate, wherein the lithium metal layer is formed on an outer circumferential surface of the porous substrate and has a window frame shape with an empty interior, and a lithium secondary battery including the same.

Separator for lithium secondary battery and lithium secondary battery including the same

The present disclosure provides a test cell for measuring electrode characteristics including an electrode assembly having a first reference electrode, a second reference electrode, and a first electrode, which is a target of characteristic measurement, wherein the electrode assembly is housed and sealed in a pouch type battery case made of a laminate sheet with an electrolyte solution.

Test cell with high reliability in electrode characteristic test

Provided are an anode active material including a porous silicon oxide-carbon material composite which includes a porous silicon oxide including pores and a line-type carbon material coated on a surface, in the pores, or on the surface and in the pores of the porous silicon oxide, and a method of preparing the anode active material. Since the silicon oxide of the anode active material according to an embodiment of the present invention may include the plurality of pores, resistance to the mechanical stress due to a volume change may be improved. Also, since the line-type carbon material is bonded to the inside of the pores, conductivity may not be decreased even in the case in which internal cracks occur in the porous silicon oxide and lifetime characteristics may be improved.

Anode active material including porous silicon oxide-carbon material composite and method of preparing the same

Provided are an electrode active material having a plurality of pores and a secondary battery including the same, and more particularly, a porous electrode active material including silicon-based oxide expressed by SiO(0.5&#x2266;x&#x2266;1.2) and having a Brunauer, Emmett, and Teller (BET) specific surface area ranging from 2 m/g to 100 m/g, and a secondary battery including a cathode including a cathode active material, a separator, an anode including an anode active material, and an electrolyte, in which the anode active material includes a porous electrode active material including silicon-based oxide expressed by SiO(0.5&#x2266;x&#x2266;1.2) and having a BET specific surface area ranging from 2 m/g to 100 m/g.

Porous electrode active material and secondary battery including the same

Disclosed herein is a silicon-based anode active material, comprising a silicon phase, a SiO(0&#x3c;x&#x3c;2) phase and a carbon dioxide phase. Also disclosed is a secondary battery, which comprises a cathode comprising a cathode active material, an anode active material comprising an anode active material, and a separator, wherein the anode active material comprises a silicon phase, an SiO(0&#x3c;x&#x3c;2) phase and a silicon dioxide phase.

Silicon-based anode active material and secondary battery comprising the same

Provided is an anode including an anode active material including SiO(0&#x3c;x&#x2266;1) and a carbon material having a surface coated with amorphous carbon, wherein a crystal orientation ratio is in a range of 0.07 to 0.17. A lithium secondary battery including the anode of the present invention may have improved life characteristics, low thickness change rate, and improved initial discharge capacity.

Anode including silicon-based material and carbon material, and lithium secondary battery including the same

The present invention relates to a silicon-based composite including a silicon oxide which is coated thereon with carbon and bonded therein to lithium. The present invention also relates to a method of producing a silicon-based composite, comprising coating a surface of silicon oxide with carbon, mixing the silicon oxide coated with carbon with lithium oxide, and heat-treating a mixture of the silicon oxide coated with carbon and the lithium oxide in an inert atmosphere.

Silicon-based composite and production method thereof

Provided is a cable-type secondary battery having a predetermined-shaped horizontal cross section and extending in a longitudinal direction, which includes a hollow core portion having a gel polymer electrolyte injected thereinto, an inner electrode which includes an inner current collector surrounding an outer surface of the hollow core portion and an inner electrode active material layer formed on a surface of the inner current collector, a separation layer surrounding an outer surface of the inner electrode, an outer electrode which includes an outer electrode active material layer surrounding an outer surface of the separation layer and an outer current collector surrounding an outer surface of the outer electrode active material layer, and a protective coating layer.

Cable-type secondary battery and method of preparing the same

Disclosed herein is a porous silicon-based electrode active material, comprising a silicon phase, a SiO(0&#x3c;x&#x3c;2) phase and a silicon dioxide phase and having a porosity of 7-71%.

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Daejeon, South Korea

Hye Ran Jung