US 2018/0006307 A1 · ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD FOR PREPARING SAME, ELECTRODE ASSEMBLY FOR LITHIUM SECONDARY BATTERY COMPRISING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Abstract

The present invention relates to an electrode for a lithium secondary battery, a method for preparing the same, an electrode assembly for a lithium secondary battery comprising the same, and a lithium secondary battery comprising the same, wherein the electrode comprises an electrode active material, an aqueous binder, a compound represented by Formula 1, and a compound represented by Formula 2. Formula 1 and Formula 2 are the same as set forth in the specification. The electrode for a lithium secondary battery improves the physical properties of the aqueous binder in a manner whereby a cross-linking reaction material is combined with the aqueous binder, so that the electrode can improve initial charge/discharge efficiency and the life span of a lithium secondary battery, preferably a lithium sulfur battery, and improve the area capacity of the electrode.

Claims13

Dependent claims

An electrode for a lithium secondary battery, which comprises an electrode active material, an aqueous binder, a compound represented by the following Formula 1 and a compound represented by the following Formula 2:

wherein, in Formula 1 and 2,
R1 to R3 are each independently one selected from the group consisting of an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms and a halogen atom,
R4 is one selected from the group consisting of H, N(R7)2, CO2R7, R8SH, R8Si(OR7)3 and an alkyl group having 1 to 3 carbon atoms,
R5 to R7 are each independently hydrogen or an alkyl group having 1 to 3 carbon atoms,
R8 is an alkylene group having 1 to 3 carbon atoms, and
n is an integer selected from 1 to 6.

3 more elements

A method for preparing an electrode for a lithium secondary battery, which comprises the steps of

mixing an electrode active material, an aqueous binder, a compound represented by the following Formula 1 and a compound represented by the following Formula 2 to prepare a slurry for forming an electrode, and
coating at least one side of a current collector by the slurry for forming an electrode to prepare the electrode:
wherein, in Formula 1 and 2,
R1 to R3 are each independently one selected from the group consisting of an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms and a halogen atom,
R4 is one selected from the group consisting of H, N(R7)2, CO2R7, R8SH, R8Si(OR7)3 and an alkyl group having 1 to 3 carbon atoms,
R5 to R7 are each independently hydrogen or an alkyl group having 1 to 3 carbon atoms,
R8 is an alkylene group having 1 to 3 carbon atoms, and
n is an integer selected from 1 to 6.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/543,387Filed 22 Jun 2016

Priority

KR 10-2015-008819022 Jun 2015

Published

4 Jan 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

H01M 4/13
Electrodes composed of, or comprising, active material: electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators;…
C08K 5/0025
Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59: crosslinking or vulcanising agents; including…
C08K 5/541
Silicon-containing compounds: containing oxygen
H01M 4/139
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: processes of manufacture

Electrode for lithium secondary battery, method for preparing same, electrode assembly for lithium secondary battery comprising same, and lithium secondary battery comprising same

Life of this patent

Electrode for lithium secondary battery, method for preparing same, electrode assembly for lithium secondary battery comprising same, and lithium secondary battery comprising same

Life of this patent

Abstract

Claims13