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Cathode additive, method for manufacturing same, and cathode and lithium secondary battery comprising same

A lithium secondary battery and additive technology, which can be applied to secondary batteries, lithium storage batteries, positive electrodes, etc., can solve the problems of deterioration of battery characteristics and difficulty in uniformly coating electrode compositions.

Active Publication Date: 2020-04-17
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, it is difficult to uniformly coat the electrode composition for forming the active material layer, and the characteristics of the battery may deteriorate

Method used

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  • Cathode additive, method for manufacturing same, and cathode and lithium secondary battery comprising same
  • Cathode additive, method for manufacturing same, and cathode and lithium secondary battery comprising same
  • Cathode additive, method for manufacturing same, and cathode and lithium secondary battery comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] 60g Li as lithium raw material 2 O. 150 g of NiO as a raw material of nickel and 6 g of ammonium phosphate as a raw material of element M were mixed, then heat-treated and calcined at 685° C. for 18 hours under a nitrogen atmosphere.

[0111] Then, 5.13 g of CoO was further added to the product, which was then heat-treated and calcined at 550° C. for 18 hours under a nitrogen atmosphere. The product is cooled to obtain positive electrode additive particles.

Embodiment 2

[0113] 60g Li as lithium raw material 2 O. 150 g of NiO as a raw material of nickel and 6 g of ammonium phosphate as a raw material of element M were mixed, then heat-treated and calcined at 685° C. for 18 hours under a nitrogen atmosphere.

[0114] Then, 15.4 g of CoO was further added to the product, which was then heat-treated and calcined at 550° C. for 18 hours under a nitrogen atmosphere. The product is cooled to obtain positive electrode additive particles.

Embodiment 3

[0116] 60g Li as lithium raw material 2 O. 150 g of NiO as a raw material of nickel and 6 g of ammonium phosphate as a raw material of element M were mixed, then heat-treated and calcined at 685° C. for 18 hours under a nitrogen atmosphere.

[0117] Then, 45 g of CoO was further added to the product, which was then heat-treated and calcined at 550° C. for 18 hours under a nitrogen atmosphere. The product is cooled to obtain positive electrode additive particles.

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Abstract

The present invention relates to: a cathode additive for a lithium secondary battery, which has a high irreversible capacity and thus can be effectively applied to a high capacity battery involving the use of an anode having a high energy density; and a manufacturing method therefor.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the priority and benefits of Korean Patent Application No. 10-2017-0161943 filed with the Korean Intellectual Property Office on November 29, 2017 and Korean Patent Application No. 10-2018-0144887 filed on November 21, 2018, hereby The disclosure thereof is incorporated by reference in its entirety. [0003] The invention relates to a positive electrode additive for a lithium secondary battery, a preparation method thereof, a positive electrode containing the same and a lithium secondary battery containing the same. Cathode additives exhibit high irreversible capacity and can be effectively applied to batteries using anode materials with high energy density. Background technique [0004] Recently, demand for secondary batteries as energy sources has rapidly increased. Among secondary batteries, lithium secondary batteries having high energy density and voltage, long cycle life...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M4/13H01M10/052C01G53/00C01D15/02C01G51/00
CPCH01M4/62C01G53/42C01P2006/40C01P2002/72Y02E60/10H01M10/0525H01M4/525H01M4/364H01M4/1391H01M4/131H01M4/0471H01M4/13H01M10/052C01G51/42C01D15/02H01M4/505H01M4/628H01M2004/028
Inventor 全惠林李东勋李尚昱卢恩率郑王谟姜玟锡白韶螺
Owner LG ENERGY SOLUTION LTD
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