Solid electrolyte and battery employing the same

• US 20040101761A1
• Filed: 09/08/2003
• Published: 05/27/2004
• Est. Priority Date: 11/27/2002
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Young-Sin, Lee, Seok-Soo, Jin, Young-Gu
• Granted Patent: US 7,220,517 B2
• Time in Patent Office: Days
• US Class Current: 429/322
• CPC Class Codes: H01B 1/122 Ionic conductors
• 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 10/0562 Solid materials
• CPC Class Codes: H01M 2300/0071 Oxides
• CPC Class Codes: H01M 6/186 Only oxysalts-containing solid electrolytes
• 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

Abstract

A solid electrolyte, a method of manufacturing the same, and a lithium battery and a thin-film battery that employ the solid electrolyte are provided. The solid electrolyte contains nitrogen to enhance the ionic conductivity and electrochemical stability of batteries.

Claims

1. A solid electrolyte having the formula of Li_xSi_yM_zO_vN_w where 0.3≦

x≦

0.46, 0.05≦

y≦

0.15, 0.016≦

z<

0.05, 0.42≦

v<

0.5, 0≦

w≦

0.029, and M is at least one selected from the group consisting of Nb, Ta, P, and W.

2. A method of manufacturing the solid electrolyte of claim 1 using Li₂O, SiO₂, and at least one selected from the group consisting of Nb₂O₅, Ta₂O₅, WO₃, and Li₃PO₄ as source materials by one of simultaneous sputtering, electron beam deposition, ion beam deposition, and chemical vapor deposition.

3. The method of claim 2, wherein a reactant gas containing nitrogen is used.

4. A lithium battery employing the solid electrolyte of claim 1.

5. A thin-film battery employing the solid electrolyte of claim 1.