Lg Chem, Ltd

Lg Energy Solution, Ltd.

Other

Ulsan National Institute of Science and Technology

Unist, Inc.

Janis Doelle

Seok Koo Kim

Ji Won Min

Hoe Jin Hah

Jong Keon Yoon

Seok-Koo Kim

Se Mi Park

Yong Jun Kim

Hoe-Jin Hah

Yeo Kyung Yoon

Youngsik Kim

Ji-Won Min

Seongwoo Heo

Youngjun Lim

Provided is a positive electrode for a lithium secondary battery, the positive electrode including a positive electrode mixture layer on a positive electrode current collector, wherein the positive electrode mixture layer includes a positive electrode active material and a lithium ion additive, the lithium ion additive is a lithium ion conductive ceramic material represented by Formula 1 below, and the lithium ion conductive ceramic material has a structure in which lithium ions are additionally inserted into vacancy sites of a NASICON-type (Na super ionic conductors-type) structure.LiMM(PO)&#x2003;&#x2003;[Formula 1] In Formula 1, Mis at least one of Ti and Ge, Mis one or more selected from the group consisting Al, Cr, Ga, Fe, Sn, In, Lu, Y, and La, and 0&#x3c;x1&#x2264;0.3, and 1.7&#x2264;y1&#x2264;2.0.

Positive electrode for lithium secondary battery, preparation method thereof, and lithium secondary battery including same

The present disclosure relates to a separator for a lithium ion secondary battery and a battery comprising the separator. The separator supplements the irreversible capacity of a negative electrode. The separator comprises composite particles (A), and the composite particles (A) include a core portion comprising lithium composite metal oxide particles and a shell portion comprising a carbonaceous material with which the core surface is coated at least partially; the composite particles (A) cause lithium deintercalation at 0.1 V to 2.5 V (vs. Li/Li); the battery has a positive electrode potential of 3 V or more (vs. Li/Li); and the battery has a driving voltage of 2.5 V to 4.5 V.

Separator for lithium ion secondary battery and lithium ion secondary battery comprising the same

A method of manufacturing a high loading electrode, which prevents the phenomenon of the binder being lifted, does not cause drying of the electrode slurry, and does not cause damage of the electrode layer and reduction of the electrode strength at the corners in the punching is provided. The method of manufacturing the high loading electrode includes applying an electrode slurry on a release film to thereby produce an electrode layer having the release film attached thereto, punching the electrode layer having the release film attached thereto to provide a plurality of punched electrode layers, each punched electrode layer having a size of a unit electrode, separating and removing the release film from the punched electrode layers, and stacking and rolling at least two punched electrode layers on a current collector.

Method for manufacturing high-loading electrode

Provided are an electrode for a secondary battery and a manufacturing method thereof. According to the present invention, a secondary battery, which has high capacity and is also able to get an excellent evaluation in a nail penetration test so that stability is ensured, may be manufactured. In order to accomplish the above objectives, the present invention provides an electrode for a secondary battery which includes an electrode current collector; a first electrode active material layer formed on the electrode current collector; and a second electrode active material layer formed on the first electrode active material layer, wherein a layer composed of the electrode current collector and the first electrode active material layer has a tensile strain of 1.2% or less.

Electrode for secondary battery and lithium secondary battery including same

The present invention relates to a method of manufacturing an electrode for a rechargeable battery, including (a) coating electrode slurry including an electrode active material, a binder, and a solvent on one surface of a sheet-shaped current collector; and (b) drying the electrode slurry while applying vacuum in a direction of decreasing agglomeration of the binder due to vaporization of the solvent.

Method of manufacturing electrode for rechargeable battery including process of drying electrode slurry by applying vacuum in certain direction

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Daejeon, South Korea

Janis Doelle