Abstract: Provided are a method for generating a summary and a system therefor. The method according to some embodiments may include calculating a likelihood loss for a summary model using a first text sample and a first summary sentence corresponding to the first text sample, calculating an unlikelihood loss for the summary model using a second text sample and the first summary sentence, the second text sample being a negative sample generated from the first text sample, and updating the summary model based on the likelihood loss and the unlikelihood loss.

Abstract: An apparatus for embedding a sentence feature vector according to an embodiment includes a sentence acquisitor configured to acquire a first sentence and a second sentence, each including one or more words; a vector extractor configured to extract a first feature vector corresponding to the first sentence and a second feature vector corresponding to the second sentence by independently inputting each of the first sentence and the second sentence into a feature extraction network; and a vector compressor configured to compress the first feature vector and the second feature vector into a first compressed vector and a second compressed vector, respectively, by independently inputting each of the first feature vector and the second feature vector into a convolutional neural network (CNN)-based vector compression network.

Abstract: The present disclosure relates to a separator for a lithium metal battery and a lithium ion secondary battery including the same. The separator is provided with a porous coating layer including a high content of binder resin. The content of binder resin in the porous coating layer is 25 wt % or more based on 100 wt % of the porous coating layer, and the porous coating layer faces a negative electrode.

Abstract: A battery includes an electrode tab coated with an insulating layer, and more particularly to an electrode including an electrode current collector coated with an electrode active material, an electrode tab protruding from the electrode current collector, and an insulating layer formed on the electrode tab by coating, wherein the other surface of the electrode tab having the insulating layer formed thereon by coating is welded to an electrode lead.

Abstract: The present disclosure relates to a separator for a lithium metal battery and a lithium ion secondary battery including the same. The separator is provided with a porous coating layer including a high content of binder resin. The content of binder resin in the porous coating layer is 25 wt % or more based on 100 wt % of the porous coating layer, and the porous coating layer faces a negative electrode.

Abstract: Disclosed is a lithium metal secondary battery including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a protective layer interposed between the negative electrode and the separator. The protective layer comprises an additive, and wherein the additive comprises a mixture of hexagonal boron nitride (BN) flakes and an ionomer comprising a sulfur (S)-containing anionic group and fluorine (F). The sulfur (S)-containing anionic group is at least one selected from the group consisting of SO42? and SO3?.

Abstract: Provided is a casing for a lithium metal secondary battery including: a battery casing material; at least one releasable capsule attached at least partially or totally to the inner surface of the casing material to cover the inner surface of the casing material; and a release solution supported in the releasable capsule, wherein the releasable capsule includes a capsule coating film and a capsule inner space surrounded with the capsule coating film, the release solution is supported in the capsule inner space, and the release solution includes a release agent and a solvent. A lithium metal secondary battery including the casing and a method for manufacturing the same are also provided. It is possible to increase releasability of the negative electrode in a lithium metal secondary battery and to improve nail safety by using the releasable capsule according to the present disclosure.

Abstract: A negative electrode for a lithium metal battery which includes: a current collector; a negative electrode active material layer formed on the surface of a current collector; a heat conductive layer formed on a surface of the negative electrode active material layer wherein the heat conductive layer comprises a heat conductive material having a heat conductivity of 25 W/m·K to 500 W/m·K; and a protective layer formed on a surface of the heat conductive layer, wherein the protective layer includes at least one of a porous polymer layer and a ceramic layer. An electrochemical device including the negative electrode for a lithium metal battery. The negative electrode for a lithium metal battery includes a heat conductive layer and a protective layer, and can inhibit growth of lithium dendrite in a negative electrode for a lithium metal battery and improve the cycle life of an electrochemical device.

Abstract: Provided is a casing for a lithium metal secondary battery including: a battery casing material; at least one releasable capsule attached at least partially or totally to the inner surface of the casing material to cover the inner surface of the casing material; and a release solution supported in the releasable capsule, wherein the releasable capsule includes a capsule coating film and a capsule inner space surrounded with the capsule coating film, the release solution is supported in the capsule inner space, and the release solution includes a release agent and a solvent. A lithium metal secondary battery including the casing and a method for manufacturing the same are also provided. It is possible to increase releasability of the negative electrode in a lithium metal secondary battery and to improve nail safety by using the releasable capsule according to the present disclosure.

Abstract: A negative electrode for a lithium metal battery which includes: a current collector; a negative electrode active material layer formed on the surface of a current collector; a heat conductive layer formed on a surface of the negative electrode active material layer wherein the heat conductive layer comprises a heat conductive material having a heat conductivity of 25 W/m·K to 500 W/m·K; and a protective layer formed on a surface of the heat conductive layer, wherein the protective layer includes at least one of a porous polymer layer and a ceramic layer. An electrochemical device including the negative electrode for a lithium metal battery. The negative electrode for a lithium metal battery includes a heat conductive layer and a protective layer, and can inhibit growth of lithium dendrite in a negative electrode for a lithium metal battery and improve the cycle life of an electrochemical device.

Abstract: Disclosed is a negative electrode for lithium secondary batteries, the negative electrode including a negative electrode current collector, a primer layer applied to the outer surface of the negative electrode current collector, and a lithiophilic material (LPM) formed on at least a portion of the primer layer by coating.

Abstract: A lithium metal secondary battery including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a protective layer interposed between the negative electrode and the separator. The protective layer includes an additive, wherein the additive comprises a mixture of hexagonal boron nitride (BN) flakes with an ionomer having a sulfur (S)-containing anionic group and fluorine (F).

Abstract: An electrode includes an electrode active material layer, the electrode active material layer including an electrode active material and a conductive agent, the conductive agent including: a point-type conductive agent; and a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are bonded to each other, wherein the carbon nanotube structure has an average length of 1 ?m to 500 ?m, and the carbon nanotube structure is contained in the electrode active material layer in an amount of 0.01 wt % to 5.0 wt %. A secondary battery including the electrode is also provided.

Abstract: A lithium metal secondary battery including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a protective layer interposed between the negative electrode and the separator. The protective layer includes an additive, wherein the additive comprises a mixture of hexagonal boron nitride (BN) flakes with an ionomer having a sulfur (S)-containing anionic group and fluorine (F).

Abstract: Disclosed is a lithium metal secondary battery including: an electrode assembly including a negative electrode, a positive electrode and a separator between the negative electrode and the positive electrode; a non-aqueous electrolyte with which the electrode assembly is impregnated; and a battery casing in which the electrode assembly and the non-aqueous electrolyte are received, wherein the negative electrode includes a negative electrode current collector and a lithium metal layer formed on at least one surface of the negative electrode current collector, and the charge/discharge condition of the lithium metal secondary battery is controlled in such a manner that the battery is charged under a pressurized state with a constant pressure of 3-300 psi and discharged under a pressurized state with a constant pressure lower than the pressure applied to the pressurized state during charge.

Abstract: A separator for an electrochemical device comprising a porous polymer substrate, and a porous coating layer on at least one surface of the porous polymer substrate. The porous coating layer comprises inorganic particles and an ion conducting polymer. The ion conducting polymer comprises a fluorine-based copolymer comprising fluoroolefin-based segments with anionic functional groups present in side chains or terminals, and an electrochemical device comprising the same. It is possible to provide a separator with high ionic conductivity and an increased peel strength between the porous polymer substrate and the porous coating layer, and an electrochemical device with improved properties.

Abstract: Disclosed is a lithium metal secondary battery which includes: an electrode assembly including a negative electrode, a positive electrode and a separator interposed between the negative electrode and the positive electrode; a non-aqueous electrolyte with which the electrode assembly is impregnated; and a battery casing in which the electrode assembly and the non-aqueous electrolyte are received, wherein the negative electrode includes a negative electrode current collector and a lithium metal layer formed on at least one surface of the negative electrode current collector, the charge/discharge condition of the lithium metal secondary battery includes charging the lithium metal secondary battery under a pressurized state and discharging the lithium metal secondary battery under a non-pressurized or pressurized state, and when the lithium secondary battery is discharged under a pressurized state, the pressure applied during discharge is controlled to be smaller than the pressure applied during charge.

Abstract: The present invention relates to a negative electrode for a secondary battery. The negative electrode for the secondary battery according to an embodiment of the present invention comprises a negative electrode collector and a negative electrode active material integrated with at least a portion of a surface of the negative electrode collector, wherein the negative electrode collector has a plurality of delamination prevention current collection grooves with which the negative electrode active material is integrated, and the negative electrode active material is disposed on an inner surface of each of the delamination prevention current collection grooves so that a space part in which a passivation layer is formed is defined during charging and discharging.

Abstract: A lithium metal secondary battery including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a protective layer interposed between the negative electrode and the separator. The protective layer includes an additive, wherein the additive comprises a mixture of hexagonal boron nitride (BN) flakes with an ionomer having a sulfur (S)-containing anionic group and fluorine (F).

Abstract: The present disclosure is directed to providing improved processability by forming a protective film on the surface of lithium metal used as an electrode layer through a simple process, and to improving the cycle characteristics of a lithium metal secondary battery by forming a stable protective film. The present disclosure provides a method for manufacturing a negative electrode, including the steps of: (S1) preparing lithium metal; and (S2) dipping the lithium metal in an acid solution for 60-120 seconds to form a LiF film on the surface of lithium metal.