Solid electrolyte and battery employing the same

• US 7,220,517 B2
• Filed: 09/08/2003
• Issued: 05/22/2007
• Est. Priority Date: 11/27/2002
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Seok-soo, Park, Young-sin, Jin, Young-gu
• Primary Examiner(s): WEINER, LAURA S
• Application Number:
  US10/656,180
• Publication Number:
  US 20040101761A1
• Time in Patent Office: 1,352 Days
• Field of Search: 429/304, 429/231.95, 429/322, 429/189, 429/188, 282/62.2
• US Class Current: 429/304
• 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<

0.05, 0<

w≦

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

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

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

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

5. 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<

0.05, 0<

w≦

0.029, and M is Nb.

6. A method of manufacturing the solid electrolyte of claim 5 using targets consisting essentially of Li₂O, SiO₂, and Nb₂O₅ together with nitrogen gas, as source materials by one of simultaneous sputtering, electron beam deposition, ion beam deposition, and chemical vapor deposition.

7. A lithium battery employing the solid electrolyte of claim 5.

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