Lg Energy Solution, Ltd.

Lg Chem, Ltd

Korea Advanced Institute of Science and Technology

Hyunwoong Yun

Hoejin Hah

Jong Keon Yoon

Hee-Tak Kim

Jung Pil Lee

Jin H Cho

Ohbyong Chae

Jeongbeom Lee

Yunjung Kim

Hyunjun Choi

Youngdeok Kim

Jonghwa Lee

Youngil Roh

Hyunjin Oh

Sunwoo Hwang

SungJoong Kang

Byong Seon Lee

Jin Hyun Cho

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

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

A negative electrode for a lithium metal battery includes a metal current collector substrate, a lithium metal layer formed on at least one surface of the metal current collector substrate, and a protective layer formed on the lithium metal layer. The protective layer includes a material capable of occluding and releasing lithium in an amount of 70% by weight or more based on a total weight of the protective layer.

Negative electrode for lithium metal battery, manufacturing method thereof, and lithium metal battery comprising the same

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 an electrode assembly having a stack form of an electrode, a separator and a counter electrode, in which each of the electrode and the counter electrode includes a tab extending from a current collector; the electrode is larger than the counter electrode at four sides including a side from which the tap extends thereof, to have an exposed portion; and an insulation layer is formed on a tab portion of the electrode and on an edge portion of the electrode.

Stack-type electrode assembly comprising electrode with insulation layer and lithium secondary battery comprising 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

An electrode for a lithium secondary battery including a protective layer, and a lithium secondary battery including the same. The protective layer contains a thermally conductive material. The electrode for the lithium secondary battery maintains uniform heat distribution on a surface of the electrode during charging and discharging, so that lithium dendrites grow uniformly on the surface. Accordingly, the electrode does not cause a problem of an increase in contact area between the electrode and an electrolyte by the non-uniform growth of the lithium dendrites, or a problem of peeling of the protective layer, thereby improving stability and lifetime characteristics when applied to the battery.

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

A method for preparing an electrode for a lithium secondary battery including forming a primer layer including a conductor on a current collector; forming a patterned primer layer by forming a concave pattern through irradiating an ion beam over the whole primer layer surface; and forming an electrode layer including an electrode active material on the patterned primer layer.

Method for manufacturing electrode for lithium secondary battery, and electrode for lithium secondary battery manufactured thereby

The present invention relates to a negative electrode for a lithium secondary battery including a mesh-type insulating layer, and a lithium secondary battery including the same, and in particular, to a negative electrode for a lithium secondary battery including a mesh-type insulating layer formed on one surface of the lithium metal layer and having pores, and a lithium secondary battery including the same. The lithium secondary battery using the negative electrode induces a lithium dendrite precipitation and removal reaction inside pores of the insulating layer suppressing local lithium metal formation on the lithium metal surface and forming a uniform surface, and cell volume expansion may be suppressed therefrom, and forms a support layer on a passivation layer formed at the beginning preventing deintercalation and collapse of the passivation layer, and may enhance a battery lifetime by minimizing dead lithium while suppressing additional side reactions with a liquid electrolyte.

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Daejeon, South Korea

Hyunwoong Yun