Electrolyte for an electrochemical cell

• US 5,597,660 A
• Filed: 05/25/1994
• Issued: 01/28/1997
• Est. Priority Date: 07/29/1992
• Status: Expired due to Term

• Current Assignee: Martin Marietta Energy Systems, Inc. (Martin Marietta Corporation)
• Original Assignee: Martin Marietta Energy Systems, Inc. (Martin Marietta Corporation)
• Inventors: Dudney, Nancy J., Bates, John B.
• Primary Examiner(s): Maples, John S.
• Application Number:
  US08/248,929
• Time in Patent Office: 979 Days
• Field of Search: 423/302, 429/191
• US Class Current: 429/322
• CPC Class Codes: H01L 23/58 Structural electrical arrangements for semiconductor devices not otherwise provided for , e.g. in combination with batteries H01L23/49593, H01L23/49596 take precedence
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01L 2924/12044 OLED
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: H01M 6/18 with solid electrolyte
• CPC Class Codes: H01M 6/40 Printed batteries , e.g. thin film batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/49108 Electric battery cell making
• CPC Class Codes: Y10T 29/49115 including coating or impregnating

Abstract

Described is a thin-film battery, especially a thin-film microbattery, and a method for making same having application as a backup or primary integrated power source for electronic devices. The battery includes a novel electrolyte amorphous lithium phosphorus oxynitride which is electrochemically stable and does not react with the lithium anode and a novel vanadium oxide cathode Configured as a microbattery, the battery can be fabricated directly onto a semiconductor chip, onto the semiconductor die or onto any portion of the chip carrier. The battery can be fabricated to any specified size or shape to meet the requirements of a particular application. The battery is fabricated of solid state materials and is capable of operation between -15° C. and 150° C.

Claims

1. An electrolyte for an electrochemical cell comprising an amorphous lithium phosphorous oxinitride material.

2. An electrolyte for an electrochemical cell comprising the composition Li_x PO_y N_z where x is approximately equal to 2.8, 2y+3z is approximately equal to 7.8 and z has a value between 0.16 and 0.46.