Lithium battery, method for manufacturing a lithium battery, integrated circuit and method of manufacturing an integrated circuit

Patent metadata

Field	Value
Publication number	US-9531035-B2
Application number	US-201615040085-A
Country	US
Kind code	B2
Filing date	Feb 10, 2016
Priority date	Nov 21, 2011
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A lithium battery includes a cathode, an anode integrally formed within a silicon substrate, wherein a surface portion of the silicon substrate is patterned to form a plurality of sub-structures, and an electrolyte.

First claim

What is claimed is:

1. A lithium battery, comprising:
a cathode;
an anode integrally formed within a silicon substrate, wherein a surface portion of the silicon substrate is patterned to form a plurality of sub-structures; and
an electrolyte.

2. The lithium battery of claim 1 , wherein a groove is formed in the substrate, and the anode and the electrolyte are arranged in the groove.

3. The lithium battery of claim 1 , wherein the sub-structures are three-dimensional.

4. The lithium battery of claim 1 , wherein the sub-structures comprise mesopores.

5. The lithium battery of claim 1 , wherein the surface portion of the silicon substrate is patterned to form a plurality of grooves or columns.

6. The lithium battery of claim 5 , wherein a surface of the grooves or columns is patterned to form a plurality of further sub-structures.

7. The lithium battery of claim 6 , wherein the further sub-structures comprise mesopores.

8. An integrated circuit, comprising the lithium battery of claim 1 and a circuit element.

9. The integrated circuit of claim 8 , wherein the circuit element is formed in the silicon substrate.

10. The integrated circuit of claim 8 , wherein the circuit element is formed in a further semiconductor substrate separate from the silicon substrate.

11. The integrated circuit of claim 8 , wherein the circuit element is selected from the group consisting of an energy receiving device, an energy emitting device, a signal processing circuit, an information processing circuit, an information storing circuit, a transistor, a capacitor, a resistor, a MEMS (micro-electro-mechanical system) device, a sensor, an actuator, an energy harvester, a device for converting energy, a display device, a video device, an audio device, a music player and components of any of the devices.

12. An electronic device, comprising the integrated circuit of claim 8 .

13. The electronic device of claim 12 , wherein the electronic device is selected from the group consisting of a sensor, an actuator, an RFID (radio frequency identification device) tag and a smartcard.

14. The electronic device of claim 12 , further comprising an electric circuit.

15. A method of manufacturing a lithium battery, the method comprising:
patterning a surface portion of a silicon substrate to form a plurality of sub-structures;
forming an anode integrally within the silicon substrate in the patterned surface portion;
forming a cathode so that a cavity is formed between the cathode and the anode; and
filling an electrolyte in the cavity.

16. The method of claim 15 , further comprising forming a groove in the substrate.

17. The method of claim 15 , wherein forming the sub-structures comprises forming mesopores.

18. The method of claim 15 , wherein forming the sub-structures comprises forming a plurality of grooves or columns.

Assignees

• Infineon Technologies Austria Ag

Inventors

• Forster Magdalena
• Schmut Katharina
• Goller Bernhard
• Zieger Guenter
• Sorger Michael
• Schweizer Philemon
• Sternad Michael

Classifications

• H10W72/5363

  the connected ends being wedge-shaped · CPC title

• H01M2220/30

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

• H01M10/052

  Li-accumulators · CPC title

• Y10T29/49115

  including coating or impregnating · CPC title

• H01M10/0585

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