Method for forming and processing antiperovskite material doped with aluminum material

Patent metadata

Field	Value
Publication number	US-10008736-B2
Application number	US-201314060618-A
Country	US
Kind code	B2
Filing date	Oct 23, 2013
Priority date	Oct 23, 2012
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

The present invention is related to formation and processing of antiperovskite material. In various embodiments, a thin film of aluminum doped antiperovskite is deposited on a substrate, which can be an electrolyte material of a lithium-based electrochemical storage device.

First claim

What is claimed is:

1. A solid electrolyte for a solid-state lithium ion or lithium metal cell, the solid electrolyte comprising:
an antiperovskite having the formula Li 3-n R 1-z/2 X z H n
where R is O, S, Se, or Te and X is a halide;

wherein the antiperovskite has a lithium ion conductivity of at least about 1×10 −5 S/cm at room temperature;
wherein subscript n is from greater than 0 to less than or equal to 2;
wherein subscript z is greater than 0.8; and
wherein the lithium deficient variant of an antiperovskite has a lithium ion conductivity, σ i , that is at least about 10 7 times greater than its electronic conductivity, σ e .

2. A solid state battery comprising:
a solid electrolyte of claim 1 ;
a positive electrode; and
a negative electrode comprising lithium metal or reversibly available lithium ions.

3. The solid state battery of claim 2 , wherein the positive electrode comprises a metal and lithium fluoride when in a discharged state.

4. The solid electrolyte for a solid-state lithium ion or lithium metal cell of claim 1 , wherein the antiperovskite is doped with aluminum.

5. The solid electrolyte for a solid-state lithium ion or lithium metal cell of claim 1 , wherein n is from greater than 0 to less than 0.5.

Assignees

• Quantumscape Corp

Inventors

• Winoto Adrian
• Choi Anna
• Han Joseph
• Hudson Will
• Holme Tim
• Chao Cheng Chieh

Classifications

• H01M10/0562

  Solid materials · CPC title

• C01P2002/50

  Solid solutions · CPC title

• H01M10/054

  Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title

• C01P2002/88

  by thermal analysis data, e.g. TGA, DTA, DSC · CPC title

• C01P2006/40

  Electric properties · CPC title