Anode for all solid-state secondary battery, all solid-state secondary battery including the anode, and method of manufacturing the anode

Patent metadata

Field	Value
Publication number	US-12494477-B2
Application number	US-202117471250-A
Country	US
Kind code	B2
Filing date	Sep 10, 2021
Priority date	Feb 7, 2017
Publication date	Dec 9, 2025
Grant date	Dec 9, 2025

Abstract

An anode for an all solid-state secondary battery, the anode including an anode collector, and coating lithium distribution layer disposed on the anode collector, wherein the lithium distribution layer includes a metal capable of forming an alloy with lithium.

First claim

What is claimed is:

1 . An all solid-state secondary battery comprising:
a cathode layer; a solid electrolyte layer on the cathode layer; and an anode layer on the solid electrolyte layer, the anode layer comprising
an anode collector, and
a lithium distribution layer disposed on the anode collector, wherein the lithium distribution layer comprises a metal capable of forming an alloy with lithium and is disposed between the solid electrolyte layer and the anode collector, and
wherein the lithium distribution layer has a thickness which is greater than or equal to about 1 nanometer and less than or equal to 50 nanometers, and
wherein the lithium distribution layer comprises zinc, germanium, tin, antimony, platinum, gold, bismuth, an alloy thereof, or a combination thereof.

2 . The all solid-state secondary battery of claim 1 , wherein the lithium distribution layer comprises zinc, tin, or bismuth.

3 . The all solid-state secondary battery of claim 1 , wherein the anode collector comprises a conductive material and has a planar structure.

4 . The all solid-state secondary battery of claim 1 , wherein an electric capacity of the lithium distribution layer is less than an electric capacity of the all solid-state secondary battery.

5 . The all solid-state secondary battery of claim 1 , wherein the solid electrolyte layer is a porous sulfide solid electrolyte layer comprising Li 2 S—P 2 S 5 , Li 2 S—P 2 S 5 —LiX wherein X is I or Cl, Li 2 S—P 2 S 5 —Li 2 O, Li 2 S—P 2 S 5 —Li 2 O—LiI, Li 2 S—SiS 2 , Li2 S —SiS 2 —LiI, Li 2 S—SiS 2 —LiBr, Li 2 S—SiS 2 —LiCl, Li 2 S—SiS 2 —B 2 S 3 —LiI, Li 2 S—SiS 2 —P 2 S 5 —LiI, Li 2 S—B 2 S 3 , Li 2 S—P 2 S 5 —Z m S n wherein m and n are integers and Z is Ge, Zn, or Ga, Li 2 S—GeS 2 , Li 2 S—SiS 2 —Li 3 PO 4 , Li 2 S—SiS 2 -Li p MO q wherein p and q are integers and M is P, Si, or Ge, or a combination thereof.

6 . The all solid-state secondary battery of claim 1 , wherein the lithium distribution layer does not comprise tin.

7 . The all solid-state secondary battery of claim 1 , further comprising a lithium metal layer on the lithium distribution layer.

8 . The all solid-state secondary battery of claim 7 , wherein the lithium metal layer is on a surface of the lithium distribution layer facing the solid electrolyte layer.

9 . The all solid-state secondary battery of claim 1 , wherein when the all solid-state secondary battery is charged, lithium metal is precipitated on the lithium distribution layer facing the solid electrolyte layer.

10 . An all solid-state secondary battery comprising:
a cathode layer; a solid electrolyte layer on the cathode layer; an anode layer on the solid electrolyte layer, the anode layer comprising
an anode collector, and
a lithium distribution layer disposed on the anode collector, wherein the lithium distribution layer comprises a metal capable of forming an alloy with lithium and is disposed between the solid electrolyte layer and the anode collector, and
wherein the lithium distribution layer has a thickness which is greater than or equal to about 1 nanometer and or equal to 50 nanometers; and
a lithium metal layer on a surface of the lithium distribution layer facing the solid electrolyte layer, wherein the lithium distribution layer comprises zinc, germanium, tin, antimony, platinum, gold, bismuth, an alloy thereof, or a combination thereof.

11 . The all solid-state secondary battery of claim 10 , wherein the lithium metal layer is precipitated on the lithium distribution layer during charge of the all solid-state secondary battery.

12 . The all solid-state secondary battery of claim 10 , wherein the lithium distribution layer comprises zinc, tin, or bismuth.

13 . The all solid-state secondary battery of claim 10 , wherein the anode collector comprises a conductive material and has a planar structure.

14 . The all solid-state secondary battery of claim 10 , wherein an electric capacity of the lithium distribution layer is less than an electric capacity of the all solid-state secondary battery.

15 . The all solid-state secondary battery of claim 10 , wherein the solid electrolyte layer is a porous sulfide solid electrolyte layer comprising Li 2 S—P 2 S 5 , Li 2 S—P 2 S 5 —LiX wherein X is I or Cl, Li 2 S—P 2 S 5 —Li 2 O, Li 2 S—P 2 S 5 —Li 2 O—LiI, Li 2 S—SiS 2 , Li2 S —SiS 2 —LiI, Li 2 S—SiS 2 —LiBr, Li 2 S—SiS 2 —LiCl, Li 2 S—SiS 2 —B 2 S 3 —LiI, Li 2 S—SiS 2 —P 2 S 5 —LiI, Li 2 S—B 2 S 3 , Li 2 S—P 2 S 5 —Z m S n wherein m and n are integers and Z is Ge, Zn, or Ga, Li 2 S—GeS 2 , Li 2 S—SiS 2 —Li 3 PO 4 , Li 2 S—SiS 2 -Li p MO q wherein p and q are integers and M is P, Si, or Ge, or a combination thereof.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Fujiki Satoshi
• Ito Seitaro
• Watanabe Taku
• Aihara Yuichi
• Yamada Takanobu

Classifications

• H01M4/38

  of elements or alloys · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M10/44

  Methods for charging or discharging (circuits for charging H02J7/00) · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M4/661

  Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title