Electrochemical cell with solid and liquid electrolytes

Patent metadata

Field	Value
Publication number	US-2016308243-A1
Application number	US-201414781281-A
Country	US
Kind code	A1
Filing date	Apr 22, 2014
Priority date	Apr 23, 2013
Publication date	Oct 20, 2016
Grant date	—

Abstract

A hybrid solid state battery may comprise: a metal ion negative half-cell; a metal ion conducting solid state electrolyte separator; and a positive half-cell comprising an electrolyte selected from the group consisting of a liquid electrolyte, a gel electrolyte and a polymer electrolyte; wherein the solid state electrolyte separator is between the metal ion negative half-cell and the electrolyte in the positive half-cell. The solid state battery may be a Li-ion battery, with a Li-ion conducting solid state electrolyte separator, such as one or more of LiPON, Li 7 La 3 Zr 2 O 12 , doped anti-perovskite compositions, Li 2 S—P 2 S 5 , Li 10 GeP 2 S 12 , and Li 3 PS 4 , for example. A method of fabricating a Li-ion cell may comprise combining a lithium metal electrode, a solid state electrolyte separator and a positive half-cell, wherein the positive half-cell comprises a liquid/get/polymer electrolyte and wherein the solid state electrolyte is between the lithium metal electrode and the liquid/gel/polymer electrolyte in the positive half-cell.

First claim

What is claimed is:

1 . A hybrid solid state battery comprising:
a metal ion negative half-cell; a metal ion conducting solid state electrolyte separator; and a positive half-cell comprising an electrolyte selected from the group consisting of a liquid electrolyte, a gel electrolyte and a polymer electrolyte; wherein said metal ion conducting solid state electrolyte separator is between said metal ion negative half-cell and said electrolyte in said positive half-cell.

2 . The hybrid solid state battery of claim 1 , wherein said solid state battery is a Li-ion battery.

3 . The hybrid solid state battery of claim 1 , wherein said positive half-cell further comprises a dispersed solid state electrolyte.

4 . The hybrid solid state battery of claim 1 , wherein said electrolyte in said positive half-cell is a liquid electrolyte.

5 . The hybrid solid state battery of claim 1 , wherein said metal ion conducting solid state electrolyte separator is a multilayer structure.

6 . A Li-ion battery comprising:
a lithium metal electrode; a lithium ion conducting solid state electrolyte separator; and a positive half-cell comprising an electrolyte selected from the group consisting of a liquid electrolyte, a gel electrolyte and a polymer electrolyte; wherein said Li-ion conducting solid state electrolyte separator is between said lithium metal electrode and said electrolyte in said positive half-cell.

7 . The Li-ion battery of claim 6 , wherein said Li-ion conducting solid state electrolyte separator comprises LiPON.

8 . The Li-ion battery of claim 6 , wherein said Li-ion conducting solid state electrolyte separator comprises high surface area beta-Li 3 PS 4 .

9 . The Li-ion battery of claim 6 , wherein said positive half-cell further comprises a metal current collector coated with a composite of a lithium metal oxide, a conductive additive and a polymeric binder.

10 . A method of fabricating a Li-ion cell comprising:
combining a lithium metal electrode, a Li-ion conducting solid state electrolyte separator and a positive half-cell, wherein said positive half-cell comprises an electrolyte selected from the group consisting of a liquid electrolyte, a gel electrolyte and a polymer electrolyte and wherein said Li-ion conducting solid state electrolyte separator is between said lithium metal electrode and said electrolyte in said positive half-cell.

11 . The method of claim 10 , wherein said combining comprises:
providing a sheet of Li-ion conducting solid state electrolyte; depositing a lithium-alloying layer on a first surface of said sheet of Li-ion conducting solid state electrolyte; laminating lithium metal foil onto said lithium-alloying layer; depositing a positive electrode on a second surface of said sheet of Li-ion conducting solid state electrolyte; laminating a positive current collector onto said positive electrode; and filling said positive half-cell with liquid electrolyte.

12 . The method of claim 11 , wherein said depositing said positive electrode is by a physical vapor deposition process.

13 . The method of claim 10 , wherein said combining comprises:
providing a sheet of Li-ion conducting solid state electrolyte; depositing a lithium-alloying layer on a first surface of said sheet of Li-ion conducting solid state electrolyte; depositing or laminating lithium metal foil onto said lithium-alloying layer; depositing a positive electrode on a positive current collector; stacking electrodes wherein said positive electrode is in contact with a second surface of said Li-ion conducting solid state electrolyte; and filling said positive half-cell with liquid electrolyte.

14 . The method of claim 10 , wherein said combining comprises:
laminating or depositing lithium metal on a negative current collector; depositing a lithium-alloying layer on said lithium metal electrode; depositing a barrier layer and Li-ion conducting solid electrolyte on said alloying layer; depositing a positive electrode on a positive current collector; stacking electrodes wherein said positive electrode is in contact with a surface of said Li-ion conducting solid state electrolyte; and filling said positive half-cell with liquid electrolyte.

15 . The method of claim 10 , wherein said depositing said Li-ion conducting solid state electrolyte is by a physical vapor deposition process.

Assignees

• Applied Materials Inc

Inventors

• Herle Subramanya P
• Gordon Joseph G

Classifications

• H01M4/1391

  of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title

• H01M10/0562

  Solid materials · CPC title

• H01M4/382

  Lithium (H01M4/405 takes precedence) · CPC title

• H01M4/131

  Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title

• H01M4/0404

  by coating on electrode collectors · CPC title