Solid electrolyte and all-solid battery using the same

• US 20040106045A1
• Filed: 11/25/2003
• Published: 06/03/2004
• Est. Priority Date: 11/27/2002
• Status: Active Grant

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Ito, Shuji, Ugaji, Masaya, Mino, Shinji, Shibano, Yasuyuki
• Granted Patent: US 7,217,478 B2
• Time in Patent Office: Days
• US Class Current: 429/321
• CPC Class Codes: C23C 14/0676 Oxynitrides
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0562 Solid materials
• CPC Class Codes: H01M 10/4235 Safety or regulating additives or arrangements in electrodes, separators or electrolyte H01M10/4242 takes precedence
• CPC Class Codes: H01M 2300/0068 inorganic
• 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

Abstract

To inhibit decrease in charge-discharge, storage and charge-discharge cycle characteristics due to reduction of phosphorus atoms in a battery including lithium phosphorus oxynitride as a solid electrolyte, a transition metal element is incorporated into lithium phosphorus oxynitride to prepare a solid electrolyte.

Claims

1. A solid electrolyte comprising lithium phosphorus oxynitride and a nitride and a transition metal element.

2. The solid electrolyte in accordance with claim 1, wherein said transition metal element is at least one selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Mo, Ru, Ag, Ta, W, Pt and Au.

3. The solid electrolyte in accordance with claim 1, wherein the content of said transition metal element is 1 to 50 atom % to phosphorus atoms.

4. An all-solid battery comprising a solid electrolyte comprising lithium phosphorus oxynitride and a transition metal element.