Lg Chem, Ltd

Lg Energy Solution, Ltd.

Toray Industries, Inc.

Doo-Kyung Yang

Sung-Hoon Yu

Jong-Ho Jeon

Min-Hyung Lee

Min-Seo Kim

Min-Jung Jou

Yoo-Seok Kim

Se-Ho Park

Yoo-Sun Kang

Jung-Hoon Lee

Min-Jung Kim

Chul-Haeng Lee

Kyoung-Ho Ahn

Yi-Jin Jung

Seok-Koo Kim

Jin-Hyun Park

Kyung-Mi Lee

Jung-Don Suk

Ye-Hoon Im

Bu-Gon Shin

Eun-Kyu Her

Min-Chul Jang

Myung-Hwan Kim

Ki-Young Kwon

Da-Young Sung

Byoung-Hyo Jung

Kwon-Nam Sohn

Young-Jin Yi

Taek-Gyoung Kim

An active material recovery apparatus capable of easily recovering an electrode active material from an electrode scrap in its intrinsic shape and a positive electrode active material reuse method using the active material recovery apparatus are provided. The active material recovery apparatus which is a rotary firing apparatus comprising a rod in a screw type therein includes a heat treatment bath and a screening wall arranged in a line along an axis of the rod, wherein the heat treatment bath constitutes a heating zone, and the screening wall constitutes a cooling zone; and an exhaust injection and degassing system, wherein the heat treatment bath removes a binder and a conductive material in an active material layer by performing heat treatment on an electrode scrap comprising the active material layer on a current collector in an air while rotating the electrode scrap around the axis of the rod and separates the current collector from the active material layer, and an active material in the active material layer passes through the screening wall and is recovered as an active material in powder form, and the current collector that does not pass through the screening wall is recovered separately.

Apparatus for recovering active material and method for reusing active material by using same

There is provided a method for collecting and reusing an active material from positive electrode scrap. The positive electrode active material reuse method of the present disclosure includes (a) thermally treating positive electrode scrap comprising a lithium composite transition metal oxide positive electrode active material layer on a current collector in air at 300 to 650° C. for 1 hour or less for thermal decomposition of a binder and a conductive material in the active material layer, to separate the current collector from the active material layer, and collecting an active material in the active material layer, and (b) annealing the collected active material with an addition of a lithium precursor to obtain a reusable active material.

Active material reuse method using cathode scrap

There is provided a method for collecting and reusing an active material from positive electrode scrap. The positive electrode active material reuse method of the present disclosure includes (a) thermally treating positive electrode scrap comprising an active material layer on a current collector in air for thermal decomposition of a binder and a conductive material in the active material layer, to separate the current collector from the active material layer, and collecting an active material in the active material layer, (b) washing the collected active material using a lithium precursor aqueous solution which is basic in an aqueous solution and drying, and (c) annealing the washed active material to obtain a reusable active material.

Method for reusing active material using positive electrode scrap

There is provided a method for collecting and reusing an active material from positive electrode scrap. The method for reusing a positive electrode active material of the present disclosure includes (a) thermally treating positive electrode scrap comprising an active material layer on a current collector in air for thermal decomposition of a binder and a conductive material in the active material layer, to separate the current collector from the active material layer, and collecting an active material in the active material layer, (b-1) washing the active material collected from the step (a) with a lithium compound solution which is basic in an aqueous solution, (b-2) mixing the active material washed from the step (b-1) with a lithium precursor aqueous solution and spray drying, and (c) annealing the active material spray dried from the step (b-2) to obtain a reusable active material.

Method of making a reusable active material by using positive electrode scrap

Disclosed is a secondary battery including an electrode assembly, which includes a cathode, an anode and a separator interposed therebetween, and an electrolyte, wherein the anode includes lithium titanium oxide (LTO) as an anode active material and the electrolyte contains a phosphate-based compound as an additive.

Secondary battery including electrolyte additive

The present disclosure refers to a secondary battery which comprises a high-voltage cathode active material and a separator whose pores are not obstructed even though being used together with the high-voltage cathode active material, thereby preventing the obstruction of pores in the separator and the formation of a dendrite in the anode and eventually providing good battery life performance.

Secondary battery with improved life characteristics

Disclosed is a separator for an electrochemical device. The separator includes a non-woven web substrate, wherein at least one surface of the non-woven web substrate includes an electrode reactive layer formed by carbonization of the non-woven web substrate from the surface of the non-woven web substrate to a predetermined depth, and the electrode reactive layer is disposed at the outermost side of at least one surface of both surfaces of the separator.

Separator including laser-induced carbonized graphene layer and lithium-sulfur battery including the same

A cartridge having a novel structure for guaranteeing stable operational performance of a secondary battery that operates at a high temperature or has improved performance at a high temperature, and a battery module including the cartridge is provided. The battery module includes at least one secondary battery; and a cartridge receiving at least a portion of the secondary battery and configured to be stacked in at least one direction, the cartridge including a heat insulating member.

Battery module having all-solid-state battery and cartridge

Disclosed are: a non-aqueous electrolyte for a lithium secondary battery containing 1-20 parts by weight of a cyano group-containing pyrimidine-based compound on the basis of 100 parts by weight of an organic solvent; and a lithium secondary battery comprising the same.

Non-aqueous electrolyte and lithium secondary battery comprising same

Disclosed is a lithium secondary battery including a positive electrode, a negative electrode, a separator and a nonaqueous electrolyte, wherein the positive electrode includes LiNiMnCoO(a+x+y+z=2, 0.9&#x2264;a&#x2264;1.1, 0&#x2264;x, 0&#x2264;y, 0&#x2264;z) as a positive electrode active material, and wherein the nonaqueous electrolyte includes (i) fluorinated cyclic carbonate expressed by Chemical Formula 1 below, (ii) propionate-based ester expressed by Chemical Formula 2 below, and (iii) non-halogenated carbonate, so that a mixture weight ratio (i:ii) thereof is 20:80 to 50:50:  

Nonaqueous electrolyte lithium secondary battery

Disclosed are an anode for secondary batteries and a secondary battery including the same. The anode includes an anode mixture including an anode active material, coated on a current collector, wherein the anode active material includes lithium titanium oxide (LTO) particles provided on surfaces thereof with a cross-linked polymer coating layer, wherein the LTO particles with the cross-linked polymer coating layer formed thereon retain a porous structure formed therebetween, and a cross-linked polymer of the coating layer is a phosphate-based compound.

Anode for secondary battery and secondary battery comprising the same

The present invention provides non-aqueous electrolyte solution for a lithium secondary battery, comprising fluoroethylene carbonate and a pyrimidine-based compound; and a lithium secondary battery using the same.

Non-aqueous electrolyte and lithium secondary battery using the same

The present invention provides a non-aqueous electrolyte solution for a lithium secondary battery, comprising an ester-based compound having a branched-chain alkyl group; and a lithium secondary battery using the same.

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Daejeon, South Korea

Doo-Kyung Yang