Lg Chem, Ltd

Lg Energy Solution, Ltd.

Research Affairs of Snu & Snu R&db Foundation

Other

Il Hong Kim

Kyoung Ho Kim

Hoe Jin Hah

Je Young Kim

In Sung Uhm

Ji Yoon Kwon

Min Chul Jang

Sun Sik Shin

Song Taek Oh

Yo Han Kwon

Sung Chul Lim

Kisuk Kang

Jihyun Hong

Jung Woo Yoo

Byoung Hyo Jung

Sang Uck Lee

Joon Kwon

Hye Youn Lee

Jooyoung Song

Jung M Oh

Jeong S Oh

Gi Su Jeong

A positive electrode active material includes a lithium transition metal oxide having a spinel crystal structure, and a coating layer positioned on the surface of the lithium transition metal oxide, wherein the coating layer has an orthorhombic structure, and includes an oxide represented by Formula 1. A method for producing the positive electrode active material, a positive electrode including the positive electrode active material, and a lithium secondary battery, the positive electrode active material.

Positive electrode active material for lithium secondary battery and method for producing the same

The present invention relates to an anode including multiple current collectors juxtaposed in parallel, and a secondary battery comprising same, wherein the anode enables providing a high-capacity secondary battery while suppressing volume changes due to a silicone component-containing active material employed therein.

Anode including multiple current collectors juxtaposed in parallel, and secondary battery comprising same

A rolling method for an electrode, the method comprising the steps of: coating an electrode slurry including an electrode active material, on a current collector, to form an electrode specimen; measuring rheological properties of the electrode specimen according to temperature; deriving an appropriate temperature condition for rolling the electrode from the rheological properties of the electrode specimen according to temperature; and rolling the electrode in the appropriate temperature condition.

Rolling method for electrode

The present invention provides an electrode assembly, in which a plurality of electrodes are laminated, and a separator is inserted between adjacent electrodes. The outermost electrode disposed at an outermost layer of the electrode assembly includes a slurry applied to one surface of a current collector, and a protection layer adhered to the other surface of the current collector. Further, the outermost electrode is laminated to allow the slurry to contact the separator. Furthermore, a method for manufacturing the electrode assembly comprises applying a slurry to one surface of a current collector and laminating a protection layer on the other surface of the current collector to form an outermost electrode; allowing the outermost electrode to pass between a pair of press-rollers to perform a rolling process; and laminating the rolled outermost electrode to be disposed on an uppermost layer or a lowermost layer of the electrode assembly.

Electrode, electrode assembly and method for manufacturing the same

Disclosed are an electrode active material having improved energy density and a lithium secondary battery including the same. More particularly, provided is an electrode active material including a first electrode active material and a second electrode active material, each of the first electrode active material and the second electrode active material having a composition represented by Formula (1) below, a ratio of lithium to metals in the first electrode active material being 1.4 to 1.7, and a ratio of lithium to metals in the second electrode active material being 1.2 or more and less than 1.4:(1&#x2212;)LiM'OALiMnOA&#x2003;&#x2003;(1)

Electrode active material having improved energy density and lithium secondary battery including the same

Disclosed is a battery cell having an electrode assembly that is sealed with an electrolyte solution within a battery case, the electrode assembly including one or more positive electrodes to which a positive electrode terminal is connected; one or more first negative electrodes to which a first negative electrode terminal is connected; one or more second negative electrodes to which a second negative electrode terminal is connected; and a separator disposed between the positive electrode and the first negative electrode or second negative electrode, or a separator disposed between the positive electrode and the first negative electrode or second negative electrode and a separator disposed between the first negative electrode and the second negative electrode.

Negative electrode for preventing deposition of manganese and battery cell including the same

Disclosed herein is a cylindrical battery including an electrode assembly (jelly roll) including a positive electrode, a separator, and a negative electrode, a cylindrical container including a receiving part for receiving the electrode assembly together with an electrolytic solution, a cap assembly mounted to an open upper end of the cylindrical container, a safety vent mounted in the cap assembly, and a pressurization part located between the safety vent and the receiving part, the pressurization part communicating with the receiving part, the pressurization part being configured to apply a predetermined pressure, which is generated by gas, to the receiving part, wherein the positive electrode includes a lithium composite transition metal oxide represented by Formula 1 in the specification as a positive electrode active material.

Cylindrical battery including pressurizing part and method of manufacturing the same

Disclosed is a method of manufacturing a lithium secondary battery including a positive electrode active material, wherein the positive electrode active material includes one or more lithium transition metal oxides selected from compounds represented by Formula 1 defined in claim, and activation of the lithium secondary battery is conducted while changing charge/discharge voltage ranges and number of cycles depending on doping amount of Min Formula 1.

Method of manufacturing lithium secondary battery and lithium secondary battery manufactured by the same

Disclosed herein are a positive electrode active material including at least one selected from among compounds represented by Formula 1 below and a lithium secondary battery including the same that is capable of improving lifetime characteristics and rate characteristics while exhibiting excellent safety: Li[LiMM']OA(1), where M is at least one element selected from a group consisting of Ru, Mo, Nb, Te, Re, Ir, Pt, Cr, S, W, Os, and Po, M&#x2032; is at least one element selected from a group consisting of Ni, Ti, Co, Al, Mn, Fe, Mg, B, Cr, Zr, Zn, and second row transition metals, A is a negative monovalent or divalent anion, and 0&#x3c;x&#x3c;0.3, 0.2&#x2264;y&#x2264;0.5, 0&#x2264;z&#x3c;0.5, and 0.2&#x3c;x+y&#x3c;0.8.

Positive electrode active material and lithium secondary battery including the same

Disclosed is a secondary battery to which an electrolyte can be additionally supplied. More particularly, provided is a secondary battery including an electrode assembly that includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, and a porous elastic body that can contain an electrolyte, which are installed in a battery case.

Secondary battery to which electrolyte can be additionally supplied

Disclosed herein are a positive electrode active material including at least one selected from among compounds represented by Formula 1 below and a lithium secondary battery including the same that is capable of improving lifetime characteristics and rate characteristics while exhibiting excellent safety: xLiMMnOA*(1&#x2212;x)LiM'OA&#x2032;(1), where M is at least one element selected from a group consisting of Ru, Mo, Nb, Te, Re, Ir, Pt, Cr, S, W, Os, and Po, M&#x2032; is at least one element selected from a group consisting of Ni, Ti, Co, Al, Mn, Fe, Mg, B, Cr, Zr, Zn, and second row transition metals, A and A&#x2032; are each independently a negative monovalent or divalent anion, and 0&#x3c;x&#x3c;1, 0.3&#x3c;y&#x3c;1, 0&#x2264;z&#x3c;0.5, and 0&#x2264;z&#x2032;&#x3c;0.5.

Disclosed is a lithium secondary battery including an electrolyte, an electrode laminate, a battery case including a space part in which the electrolyte and the electrode laminate are embedded, and a sealing part surrounding the space part, and a gas permeable membrane.

Lithium secondary battery including gas permeable membrane

Disclosed is an electrode including a current collector and an electrode material layer formed on the current collector, the electrode material layer including a first electrode material layer and second electrode material layer having different electrode active materials.

Electrode including different electrode material layers and lithium secondary battery

Disclosed is an electrode for secondary batteries in which an electrode mix layer including an electrode active material is coated on an electrode collector, and a coating layer including aluminum (Al) and/or alumina (AlO) is formed on the electrode mix layer.

Electrode including coating layer for preventing reaction with electrolyte solution

A method and composition for treating bone disease with an herbal medicine is disclosed. The patient is orally treated with a composition including powdered safflower seed. In a preferred embodiment, the composition also includes powdered bark of ulmas davidiana root. An alternative embodiment of the composition contains the aqueous extract of powdered safflower seed with or without Jookyom.

Growing community of inventors

Daejeon, South Korea

Il Hong Kim