CONDUCTIVE MATERIAL DISPERSED LIQUID AND LITHIUM SECONDARY BATTERY MANUFACTURED USING SAME

Title:

CONDUCTIVE MATERIAL DISPERSED LIQUID AND LITHIUM SECONDARY BATTERY MANUFACTURED USING SAME

Document Type and Number:

WIPO Patent Application WO/2017/074124

Kind Code:

A1

Abstract:

The present invention provides: a conductive material dispersed liquid containing a conductive material, a dispersant, and a dispersion medium, wherein the conductive material comprises bundle-type carbon nanotubes having a bulk density of 10-50 kg/m3 and a conductivity satisfying the conditions of mathematical expression 1 below, thereby exhibiting excellent dispersibility and conductivity; and a lithium secondary battery, which is manufactured using the conductive material dispersed liquid and thus can exhibit excellent battery functions, especially, excellent output characteristics at lower temperatures: [Mathematical Expression 1] -X ≤ 10log R ≤ -0.6X (in mathematical expression 1 above, X is the bulk density of the carbon nanotubes, and R is the powder resistance of the carbon nanotubes under a pressure of 10-65 MPa.)

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Inventors:

KIM YE LIN (KR)
SEOL JONG HEON (KR)
KANG KYUNG YEON (KR)
CHOY SANG HOON (KR)
WOO JI HEE (KR)
CHO DONG HYUN (KR)

Application Number:

PCT/KR2016/012301

Publication Date:

May 04, 2017

Filing Date:

October 28, 2016

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M4/62; H01M2/10; H01M4/13; H01M10/052

Domestic Patent References:

WO2015105167A1

2015-07-16

Foreign References:

KR20150016852A	2015-02-13
KR20150037601A	2015-04-08
KR20130117744A	2013-10-28
JP2014208328A	2014-11-06

Other References: