Lg Energy Solution, Ltd.

Lg Chem, Ltd

Korea Advanced Institute of Science and Technology

Unist, Inc.

Hoejin Hah

Hyunwoong Yun

Jong Keon Yoon

Jeongbeom Lee

Kyung Hwa Woo

Seok Koo Kim

Hee-Tak Kim

Jeong Woo Shon

Jung Pil Lee

Jooyong Song

Ohbyong Chae

Cheolhoon Choi

Youngsik Kim

Hyunjun Choi

Yunjung Kim

Youngdeok Kim

Jiyoon Kwon

Hyunji Choi

Sunwoo Hwang

Jaekwang Kim

Byong Seon Lee

Seongwoo Hur

Youngil Roh

Seongyoon Lim

KyoungHo Kim

A method for manufacturing a lithium secondary battery that can exhibit improved capacity and energy density compared to existing lithium ion batteries and lithium metal secondary batteries, and has excellent safety and lifetime characteristics. The method includes assembling a battery comprising an anode, a cathode, a separator, and an electrolyte, and charging the battery. In the step of assembling the battery, a ratio of an anode load amount to a cathode load amount (N/P ratio) is 0.01 to 0.99, and in the step of charging the battery, charging is performed based on the cathode load amount.

Manufacturing method of lithium secondary battery including a step of charging the battery based on a cathode load amount

A secondary includes an electrode assembly having a jelly roll structure including a positive electrode sheet, a negative electrode sheet, and a separator; a cylindrical case in which the electrode assembly is received; and a flat spiral spring positioned between an outer peripheral surface of the electrode assembly and an inner surface of the cylindrical case.

Secondary battery and device including the same

The present invention discloses a pressing jig for pressing a battery cell, and a battery module, wherein the pressing jig includes a plurality of pressing plates provided on outermost portions of a plurality of battery cells and separating a space for receiving a plurality of battery cells, and performing pressing on a plurality of battery cells, wherein the pressing plates excluding one pressing plate provided on an outermost portion on one side may move in a horizontal direction as the pressing direction, while connected to the pressing frames, and a magnet is included on one pair of pressing plates provided on outermost portions on respective sides of the pressing plates so that opposite polarities may face each other, and a shielding film is formed on a portion exposed to an outside on the sides excluding an inside that faces battery cells on the one pair of pressing plates.

Battery assembly capable of simultaneous application of mechanical pressing and magnetic pressing to battery cell

The present invention discloses a pressing jig for pressing a battery cell, and a battery module including a module case in which a plurality of battery cells are included while installed in the pressing jig, wherein the pressing jig includes a presser including a plurality of pressing plates provided on outermost portions of a plurality of battery cells and among them and separating a space for receiving a plurality of battery cells, and performing pressing on a plurality of battery cells, and pressing frames connecting the pressing plates on upper portions and lower portions of the pressing plates, wherein all the pressing plates or the pressing plates excluding one pressing plate provided on an outermost portion on one side may move in a horizontal direction as the pressing direction, while connected to the pressing frames.

Pressing jig comprising magnet and battery module comprising the same

A lithium free battery comprising a positive electrode, a negative electrode, a separator, and a non-aqueous lithium electrolyte, wherein the negative electrode includes a metal substrate including at least one metal selected from the group consisting of Mg, Ca, Al, Si, Ge, Sn, Pb, As, Sb, Bi, Ag, Zn, Cd, P and Hg; a lithium-metal alloy layer formed on the metal substrate; and a lithium plating layer formed on the lithium-metal alloy layer, and a method for preparing the same.

Lithium free battery and method for preparing the same

The present disclosure relates to a separator for lithium secondary battery, a method for manufacturing same, and a lithium secondary battery including the same. The separator laminate according to one embodiment of the present disclosure includes: a plurality of separators; and adhesive layers located between mutually adjacent separators among the plurality of separators, wherein the adhesive layers are formed along the edges of the mutually adjacent separators so as to have a separation space between the mutually adjacent separators.

Separator laminate for lithium secondary battery, electrode assembly including the same, and lithium secondary battery including the same

Disclosed are an electrode assembly, a manufacturing method thereof, and a lithium secondary battery comprising the same. The electrode assembly for the lithium secondary battery includes an electrode, a separator, and an opposing electrode, wherein the electrode has a structure in which an electrode active material layer is formed on an electrode current collector including an electrode current collection substrate and a tab extending from the electrode current collection substrate, an insulation film is formed on some or all of at least one surface of the tab, and the insulation film is an organic-inorganic hybrid film including inorganic particles and a binder polymer.

Electrode assembly with insulation film formed on tab, manufacturing method thereof, and lithium secondary battery comprising the same

An electrode assembly for a lithium secondary battery including an electrode, an insulation film, a separator and a counter electrode, wherein the insulation film is formed on an entire surface of one or both sides of the electrode, and the insulation film is an organic-inorganic mixed film including inorganic particles and a binder polymer. Also discussed is a manufacturing method thereof, and a lithium secondary battery including the same.

Electrode with insulation film, manufacturing method thereof, and lithium secondary battery comprising the same

A lithium metal negative electrode and a lithium metal battery including the lithium metal negative electrode. The lithium metal negative electrode includes a protective layer present on at least one surface of the negative electrode for stabilizing between the lithium metal and the electrolyte. The protective layer includes a polymer of alpha lipoic acid (ALA) and sulfur molecule (S), a depolymerized product of the polymer, an inorganic sulfide-based compound, and at least one of an inorganic nitride-based compound, or an inorganic nitrate-based compound.

Lithium metal negative electrode and lithium metal battery including the same

The present disclosure relates to a separator for lithium secondary battery, a method for manufacturing same, and a lithium secondary battery including the same. Specifically, in one embodiment of the present disclosure, by filling the pores of the separator, the present invention physically inhibits the metal column capable of growing on the surface of the negative electrode from moving toward the positive electrode, inhibits a micro-short circuit of the lithium secondary battery, and ultimately improves the lifetime of the lithium secondary battery. In addition, by controlling the type of filling the pores of the separator and the type of the polymer filling it, the output characteristics of the lithium secondary battery are secured and improved.

Separator including ion conductive polymer filling pores of substrate and coating layer, manufacturing method of the same, lithium secondary battery including the same

A lithium secondary battery exhibiting excellent life characteristic and stability is discussed, in which side reactions of an electrolyte are minimized, and non-uniform growth of lithium dendrite is effectively inhibited.

Lithium secondary battery

A negative electrode for a lithium metal battery, a method of manufacturing the same, and a lithium metal battery including the same are provided. Specifically, one embodiment of the present invention provides a negative electrode for a lithium metal battery, the negative electrode including: a negative electrode current collector; a primer layer including an epoxy resin and a Ag conductive filler, the primer layer disposed on one surface or both surfaces of the negative electrode current collector; and a lithium metal (Li-metal) thin film disposed on the primer layer.

Anode for lithium metal battery, manufacturing method of the same, lithium metal battery including the same

A secondary battery static pressure jig and a secondary cell internal pressure control method using the same is provided. The secondary battery static pressure jig, includes: a supporting member disposed on both surfaces of a battery cell to support the battery cell; a piezoelectric element that is disposed on at least one of surfaces of the supporting member and the battery cell contacting each other and measures a pressure applied to the battery cell; and a controlling part that controls a volume of the piezoelectric element according to the pressure measured by the piezoelectric element, wherein a volume of the piezoelectric element may be changed according to the volume change of the battery cell, and the pressure applied to the battery cell from the supporting member by the volume change of the piezoelectric element may be made to be a constant pressure.

Secondary battery static pressure jig and secondary cell internal pressure control method using the same

A lithium electrode including: a lithium metal layer; an aluminum oxide layer on the lithium metal layer; and a carbon layer on the aluminum oxide layer, and a lithium secondary battery including the same. The aluminum oxide layer can prevent a direct reaction between a non-aqueous electrolyte and a lithium metal layer, and particularly, since the aluminum oxide layer does not have electrical conductivity, lithium deposition occurs between the lithium metal layer and aluminum oxide layer. Thus lithium metal is not deposited on the protection layer. In addition, the carbon layer functions for producing a stable solid electrolyte interface film thereon.

Lithium electrode and lithium secondary battery comprising the same

Disclosed is an electrode for secondary batteries including an electrode mix, which includes an electrode active material and a binder, coated on a current collector. More particularly, the electrode includes a first electrode mix layer including a first binder, a glass transition temperature (Tg) of which is lower than that of a second binder, and an electrode active material, and coated on the current collector; and a second electrode mix layer including the second binder, a glass transition temperature (Tg) of which is higher than that of the first binder, and an electrode active material, and coated on the first electrode mix layer.

Growing community of inventors

Daejeon, South Korea

Hoejin Hah