US 12,119,493 B2Granted

Negative electrode and secondary battery including the same

AssigneeLG Energy Solution, Ltd.

InventorsHye Youn Lee, Ji Hye Park, Su Rim Lee

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Abstract

A negative electrode and a secondary battery including the negative electrode, the negative electrode includes a negative electrode active material layer containing negative electrode active material particles and an additive. The additive is present in an amount of 1.8 parts by weight to 3.2 parts by weight based on 100 parts by weight of the negative electrode active material particles. The additive includes at least one selected from the group consisting of Li1+m1Alm1Ti2−m1(PO4)3, wherein 0<m1≤1, Li1+m2Alm2Ge2−m2(PO4)3, wherein 0<m2≤1, Li3m3La2/3−m3TiO3, wherein 0.2≤m3≤0.05, and Li3m4La2/3−m4ZrO3, wherein 0.2≤m4≤0.05 (LATP, LAGP, LLTO, and LLZO, respectively).

Claims10

Dependent claims

A negative electrode comprising:

a negative electrode active material layer comprising negative electrode active material particles and an additive,
wherein the negative electrode active material particles comprise artificial graphite and SiOx, wherein 0<x≤2,
wherein the additive is present in an amount of 1.8 parts by weight to 3.2 parts by weight based on 100 parts by weight of the negative electrode active material particles, wherein an average particle diameter (D50) of the additive is 0.8 μm to 5 μm, and
wherein the additive comprises at least one selected from the group consisting of Li1+m1Alm1Ti2-m1(PO4)3 (LATP), wherein 0<m1≤1, Li1+m2Alm2Ge2-m2(PO4)3 (LAGP), wherein 0<m2≤1, Li3m3La2/3-m3TiO3 (LLTO), wherein 0.05≤m3≤0.2, and Li3m4La2/3-m4ZrO3 (LLZO), wherein 0.05≤m4≤0.2.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 17/283,109Filed 14 Oct 2019
Priority: KR 10-2018-012154012 Oct 2018
Published: US 2021/0384509 A19 Dec 2021
Granted: 15 Oct 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

H01M 4/364
Composites: as mixtures
H01M 4/5825
Of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures,…:…
H01M 4/133
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: electrodes based on…
H01M 4/134
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: electrodes based on…

Family

US 2021/0384509 A1Pre-grant publication · published 9 Dec 2021
US 12,119,493 B2This patent

From the US filing history. Foreign family members aren’t listed.

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