High charge rate, large capacity, solid-state battery

Patent metadata

Field	Value
Publication number	US-10644356-B2
Application number	US-201715818385-A
Country	US
Kind code	B2
Filing date	Nov 20, 2017
Priority date	Apr 6, 2017
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

Solid-state battery structures, particularly solid-state lithium-based battery structures, which are fast charging and have a high capacity are provided. Notably, fast charging, high capacity solid-state battery structures are provided that include a plurality of solid-state-thin-film batteries that are stacked one atop the other, or that include an array of interconnected solid-state thin-film batteries, or that contain a solid-state thin-film battery located on physically exposed surfaces of fin structures.

First claim

What is claimed is:

1. A solid-state battery structure comprising:
a plurality of fin structures extending upward from a base substrate, wherein each fin structure of the plurality of fin structures and the base substrate are of unitary construction and comprise a same semiconductor material; and
a solid-state thin-film battery structure located on physically exposed surfaces of the plurality of fin structures and on the base substrate, wherein the solid-state thin-film battery structure comprises a bottom electrode, a battery cell material stack, and a top electrode, wherein an end segment of each of the bottom electrode, the battery cell material stack and the top electrode which is adjacent to an outermost fin structure of the plurality of fin structures is in direct physical contact with a topmost surface of the base substrate, the battery material stack that is located between neighboring fin structures of the plurality of fin structures has a bottommost surface that directly contacts a horizontal surface of the bottom electrode that is located between the neighboring fin structures of the plurality of fin structures, and wherein an outermost sidewall of the top electrode that is located adjacent to the outermost fin structure of the plurality of fin structures is physically exposed.

2. The solid-state battery structure of claim 1 , wherein the solid-state thin-film battery structure further comprising an anode region located between the solid-state electrolyte and the top electrode.

3. The solid-state battery structure of claim 2 , wherein the solid-state thin-film battery structure is a lithium-based battery.

4. The solid-state battery structure of claim 3 , wherein the cathode is composed of a lithium-based mixed oxide.

5. The solid-state battery structure of claim 3 , wherein the solid-state electrolyte is composed of a material that enables the conduction of lithium ions.

6. The solid-state battery structure of claim 5 , wherein the material of the solid-state electrolyte is lithium phosphorus oxynitride (LiPON) or lithium phosphosilicate oxynitride (LiSiPON).

7. The solid-state battery of claim 3 , further comprising a lithium nucleation enhancement liner located between the solid-state electrolyte and the anode region.

8. The solid-state battery of claim 7 , wherein the lithium nucleation enhancement liner is composed of gold (Au), silver (Ag), zinc (Zn), magnesium (Mg), tantalum (Ta), tungsten (W), molybdenum (Mo), a titanium-zirconium-molybdenum alloy (TZM), or silicon (Si).

9. The solid-state battery structure of claim 2 , wherein the anode region is composed of a plurality of lithium regions.

10. The solid-state battery structure of claim 2 , wherein the anode region comprises a lithium ion generator or lithium intercalation active material.

11. The solid-state battery structure of claim 1 , wherein an entirety of each of the end segments is coplanar with a bottommost surface of each fin structure of the plurality of fin structures.

12. The solid-state battery structure of claim 1 , wherein an entirety of each fin structure of the plurality of fin structures is located above the topmost surface of the base substrate.

13. A solid-state battery structure comprising:
a plurality of fin structures extending upward from a base substrate; and
a solid-state thin-film battery structure located on physically exposed surfaces of the plurality of fin structures and on the base substrate, wherein the solid-state thin-film battery structure comprises a bottom electrode, a battery cell material stack, and a top electrode, and wherein an end segment of each of the bottom electrode, the battery cell material stack and the top electrode which is adjacent to an outermost fin structure of the plurality of fin structures is in direct physical contact with a topmost surface of the base substrate and wherein the entirety of each of the end segments is coplanar with a bottommost surface of the at least one fin structure, and wherein the battery material stack that is located between neighboring fin structures of the plurality of fin structures has a bottommost surface that directly contacts a horizontal surface of the bottom electrode that is located between the neighboring fin structures of the plurality of fin structures.

Assignees

• IBM

Inventors

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

Classifications

• H01M10/0585 Primary

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M4/131

  Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title

• H01M6/40

  Printed batteries {, e.g. thin film batteries} · CPC title

• H01M10/0463

  Cells or batteries with horizontal or inclined electrodes · CPC title