ELECTRODE, SECONDARY BATTERY COMPRISING SAME, AND MANUFACTURING METHOD THEREFOR

Title:

ELECTRODE, SECONDARY BATTERY COMPRISING SAME, AND MANUFACTURING METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2023/059039

Kind Code:

A1

Abstract:

Presented are an electrode, a secondary battery comprising same, and an energy storage device, the electrode comprising: an electrode current collector; and an electrode layer disposed on the electrode current collector and including an active material, a conductive material, and a fluorine-containing binder, wherein the electrode layer has a Quantified Binder Ratio (QBR) of 1.1 or less, and the QBR is defined by the mathematical formula below: QBR = Bs/Bf, wherein in the mathematical formula, Bs indicates the average value of the fluorine content in the surface region of the electrode layer from the outermost surface of the electrode layer to within 15% of the total thickness of the electrode layer, and Bf indicates the average value of the fluorine content in the bottom region of the electrode layer from the interface of the electrode layer facing the current collector to within 15% of the total thickness of the electrode layer.

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Inventors:

LEE NAM-JEONG (KR)
CHUNG KOO-SEUNG (KR)
KWAK SANG-MIN (KR)
KIM JI-HYUN (KR)
SHIN DONG-OH (KR)
LEE KI-SEOK (KR)
YOO KWANG-HO (KR)

Application Number:

PCT/KR2022/014927

Publication Date:

April 13, 2023

Filing Date:

October 04, 2022

Export Citation:

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Assignee:

LG ENERGY SOLUTION LTD (KR)

International Classes:

H01M4/13; H01M4/02; H01M4/04; H01M4/139; H01M4/62; H01M10/052

Foreign References:

JP2008084742A	2008-04-10
JP2007026984A	2007-02-01
KR20200017218A	2020-02-18
JP2013062131A	2013-04-04
KR20160145043A	2016-12-19
KR20210131944A	2021-11-03
KR20220049210A	2022-04-21

Other References:

J. BRANDRUP ET AL., POLYMER JOURNAL, 2003
POLYMER JOURNAL, vol. 46, 2005, pages 8872 - 8882

Attorney, Agent or Firm:

PHIL & ONZI INT'L PATENT & LAW FIRM (KR)

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