High-performance thin-film battery with an interfacial layer

Patent metadata

Field	Value
Publication number	US-2020251784-A1
Application number	US-202016848394-A
Country	US
Kind code	A1
Filing date	Apr 14, 2020
Priority date	Oct 2, 2017
Publication date	Aug 6, 2020
Grant date	—

Abstract

An all solid-state lithium-based thin-film battery is provided. The all solid-state lithium-based thin-film battery includes a battery material stack of, from bottom to top, an anode-side electrode, an anode region, an aluminum oxide interfacial layer, a solid-state electrolyte layer, a cathode layer, and a cathode-side electrode layer. The all solid-state lithium-based thin-film battery stack is formed by first forming the anode-side of the battery stack and thereafter forming the cathode-side. All solid-state lithium-based thin-film batteries including the aluminum oxide interfacial layer located between the anode region and the solid-state electrolyte layer have improved performance, high capacity, and high reliability.

First claim

What is claimed is:

1 . A solid-state lithium-based battery comprising:
an anode-side electrode located on a substrate; an aluminum oxide interfacial layer located on the anode-side electrode; a lithium-based solid-state electrolyte layer located on the aluminum oxide interfacial layer; a lithiated cathode material layer located on the lithium-based solid-state electrolyte layer; and a cathode-side electrode located the lithiated cathode material layer.

2 . The solid-state lithium-based battery of claim 1 , further comprising an anode region located between the aluminum oxide interfacial layer and the anode-side electrode.

3 . The solid-state lithium-based battery of claim 2 , wherein the anode region is a lithium accumulation region formed during a charging/recharging process.

4 . The solid-state lithium-based battery of claim 2 , wherein the anode region is a deposited anode material.

5 . The solid-state lithium-based battery of claim 1 , wherein the aluminum oxide interfacial layer has a thickness from 1 nm to 50 nm.

6 . The solid-state lithium-based battery of claim 1 , wherein the substrate has a textured surface.

7 . The solid-state lithium-based battery of claim 1 , wherein the solid-state lithium-based battery has a charge rate of greater than 3 C.

8 . The solid-state lithium-based battery of claim 1 , wherein the solid-state lithium-based battery has a specific charge capacity of greater than 50 mAh/g.

9 . The solid-state lithium-based battery of claim 2 , wherein the aluminum oxide interfacial layer prevents oxidation of the anode region.

10 . The solid-state lithium-based battery of claim 1 , wherein the aluminum oxide interfacial layer provides for a uniform lithium distribution in the battery.

11 . A method of forming a solid-state lithium-based battery, the method comprising:
forming an anode-side electrode on a substrate; forming an aluminum oxide interfacial layer directly on a surface of the anode-side electrode; forming a lithium-based solid-state electrolyte layer on the aluminum oxide interfacial layer; forming a lithiated cathode material layer the lithium-based solid-state electrolyte layer; forming a cathode-side electrode on the lithiated cathode material layer; and forming an anode region between the aluminum oxide interfacial layer and the anode-side electrode, wherein the forming the anode region comprises performing a charging/recharging process after forming the cathode-side electrode.

12 . The method of claim 11 , wherein the aluminum oxide interfacial layer has a thickness from 1 nm to 50 nm.

13 . The method of claim 11 , wherein the substrate has a textured surface.

14 . The method of claim 11 , wherein the solid-state lithium-based battery has a charge rate of greater than 3 C.

15 . The method of claim 11 , wherein the solid-state lithium-based battery has a specific charge capacity of greater than 50 mAh/g.

16 . The method of claim 11 , wherein the aluminum oxide interfacial layer prevents oxidation of the anode region.

17 . The method of claim 11 , wherein the aluminum oxide interfacial layer provides for a uniform lithium distribution in the battery.

18 . A method of forming a solid-state lithium-based battery, the method comprising:
forming an anode-side electrode on a substrate; forming, via a deposition process, an anode region directly on a surface of the anode-side electrode; forming an aluminum oxide interfacial layer directly on a surface of the anode region; forming a lithium-based solid-state electrolyte layer on the aluminum oxide interfacial layer; forming a lithiated cathode material layer the lithium-based solid-state electrolyte layer; and forming a cathode-side electrode on the lithiated cathode material layer.

19 . The method of claim 18 , wherein the aluminum oxide interfacial layer prevents oxidation of the anode region.

20 . The method of claim 18 , wherein the aluminum oxide interfacial layer provides for a uniform lithium distribution in the battery.

Assignees

• IBM

Inventors

• Li Ning
• De Souza Joel P
• Lee Yun Seog
• Sadana Devendra K

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/0525 Primary

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

• H01M10/0562

  Solid materials · CPC title

• H01M4/0426

  Sputtering · CPC title