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-2018226633-A1
Application number	US-201815890472-A
Country	US
Kind code	A1
Filing date	Feb 7, 2018
Priority date	Feb 7, 2017
Publication date	Aug 9, 2018
Grant date	—

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 anode for an all solid-state secondary battery, the anode 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.

2 . The anode of claim 1 , wherein the lithium distribution layer comprises zinc, germanium, tin, antimony, platinum, gold, bismuth, an alloy thereof, or a combination thereof.

3 . The anode of claim 1 , wherein the anode collector comprises a conductive material and has a planar structure.

4 . The anode of claim 1 , wherein the lithium distribution layer has a thickness in a range of from about 1 nanometer to less than about 100 nanometers.

5 . 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.

6 . The all solid-state secondary battery of claim 5 , wherein the lithium distribution layer comprises zinc, germanium, tin, antimony, platinum, gold, bismuth, an alloy thereof, or a combination thereof.

7 . The all solid-state secondary battery of claim 6 , wherein the lithium distribution layer is disposed between the solid electrolyte layer and the anode collector.

8 . The all solid-state secondary battery of claim 7 , wherein the lithium distribution layer has a thickness in a range of from about 1 nanometer to less than about 100 nanometers.

9 . The all solid-state secondary battery of claim 5 , wherein when the all solid-state secondary battery is charged, lithium metal is precipitated on a surface of the lithium distribution layer facing the solid electrolyte layer.

10 . The all solid-state secondary battery of claim 5 , wherein the anode collector comprises a conductive material and has a planar structure.

11 . A method of manufacturing an anode for an all solid-state secondary battery, the method comprising:
providing an anode collector; and disposing a metal capable of reacting with lithium ions on a surface of the anode collector to form a lithium distribution layer on the surface of an anode collector to form the anode.

12 . The method of claim 11 , wherein the lithium distribution layer comprises zinc, germanium, tin, antimony, platinum, gold, bismuth, an alloy thereof, or a combination thereof.

13 . The method of claim 12 , wherein the lithium distribution layer has a thickness in a range of from about 1 nanometer to less than about 100 nanometers.

14 . A method of charging 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, the method comprising: applying a voltage between the cathode layer and the anode layer to dispose lithium on the lithium distribution layer and form a lithium alloy comprising the metal capable of forming an alloy with lithium.

Assignees

• Samsung Electronics Co Ltd

Inventors

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

Classifications

• H01M2004/027

  Negative electrodes · CPC title

• H01M4/1395

  of electrodes based on metals, Si or alloys · CPC title

• H01M2300/0068

  inorganic · CPC title

• H01M4/134 Primary

  Electrodes based on metals, Si or alloys · CPC title

• H01M4/387

  Tin or alloys based on tin · CPC title