Thin lithium film battery

• US 20030152829A1
• Filed: 02/12/2002
• Published: 08/14/2003
• Est. Priority Date: 02/12/2002
• Status: Abandoned Application

• Current Assignee: Excellatron Solid State, LLC
• Original Assignee: Excellatron Solid State, LLC
• Inventors: Maxie, Eleston Jr., Zhang, Ji-Guang
• Application Number:
  US10/074,875
• Publication Number:
  US 20030152829A1
• Time in Patent Office: Days
• US Class Current: 429/153
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/0472 Vertically superposed cells with vertically disposed plates
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0585 of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
• CPC Class Codes: H01M 4/64 Carriers or collectors
• CPC Class Codes: H01M 50/117 Inorganic material
• CPC Class Codes: H01M 50/119 Metals
• CPC Class Codes: H01M 50/124 having a layered structure
• CPC Class Codes: H01M 50/133 Thickness
• CPC Class Codes: H01M 6/40 Printed batteries , e.g. thin film batteries
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/49115 including coating or impregnating

Abstract

A rechargeable, thin film lithium battery cell (10) is provided having a supporting substrate (11), a cathode current collector (12), a cathode (13), a solid state electrolyte (14), an anode (15) and an anode current collector (17). The battery cell (10) also has a ceramic protective layer (19) which covers the exposed or outwardly facing surfaces of the cathode (13), electrolyte (14), and anode (15) and at least a portion of the cathode and anode current collectors (12) and (17),

Claims

1. A thin film lithium battery comprising,

a supporting substrate;

a stack of battery components mounted to said supporting substrate, said stack including a cathode, an anode, and an electrolyte positioned between said cathode and said anode; and

a ceramic layer in intimate contact with and covering the outwardly facing surfaces of said stack.

2. The thin film lithium battery of claim 1 wherein said stack includes at least a portion of a current collector.

3. The thin film lithium battery of claim 2 wherein said current collector is an anode current collector.

4. A thin film lithium battery comprising,

a supporting substrate;

a cathode;

an anode;

an anode current collector;

an electrolyte positioned between said cathode and said anode; and

a ceramic layer in intimate contact with and extending from said substrate and to a position in intimate contact with and covering the exposed areas of cathode, anode and electrolyte above said substrate and at least a portion of said anode current collector.

5. The thin film lithium battery of claim 4 wherein said supporting substrate includes a current collector.

6. The thin film lithium battery of claim 4 wherein said current collector is a cathode current collector.

7. A method of manufacturing a lithium battery comprising the steps of:

(a) providing a supporting substrate;

(b) depositing a stack of components upon the supporting substrate, the stack of components including a cathode, an anode, and an electrolyte; and

(c) depositing a ceramic layer directly upon the exposed surfaces of the stack of components.

8. The method of claim 7 wherein the stack of components includes at least a portion of a current collector.

9. The thin film lithium battery of claim 8 wherein said current collector is an anode current collector

10. A method of manufacturing a lithium battery comprising the steps of:

(a) providing a supporting substrate;

(b) depositing a stack of components upon the supporting substrate, the components including a cathode, an anode and an electrolyte; and

(c) depositing a ceramic layer which extends from and in intimate contact with said supporting substrate to a position in intimate contact with and covering the outwardly facing surfaces of the stack of components.

11. The method of claim 10 wherein the stack of components includes at least a portion of a current collector.

12. The method of claim 11 wherein said current collector is an anode current collector.

13. The method of claim 10 wherein said supporting substrate includes a current collector.

14. The method of claim 13 wherein the current collector is a cathode current collector.