Solid electrolyte compositions for electrochemical cells

Patent metadata

Field	Value
Publication number	US-2018159172-A1
Application number	US-201715820107-A
Country	US
Kind code	A1
Filing date	Nov 21, 2017
Priority date	Nov 23, 2016
Publication date	Jun 7, 2018
Grant date	—

Abstract

A solid-state electrolyte including an ion-conducting inorganic material represented by the formula Li 1+y Zr 2−x Me x (PO 4 ) 3 where 2>x>0, 0.2>y>−0.2, and Me is at least one element from Group 14, Group 6, Group 5, or combinations thereof.

First claim

We claim:

1 . A solid-state electrolyte, comprising:
an ion-conducting inorganic material represented by the formula:
Li 1+y Zr 2−x Me x (PO 4 ) 3
where 2>x>0, 0.2>y>−0.2, and Me is at least one element from Group 14, Group 6, Group 5, or combinations thereof.

2 . The solid-state electrolyte of claim 1 , wherein Me is at least one Group 14 element.

3 . The solid-state electrolyte of claim 2 , wherein Me is tin (Sn), lead (Pb), or combinations thereof.

4 . The solid-state electrolyte of claim 2 , wherein Me is tin (Sn).

5 . The solid-state electrolyte of claim 2 , wherein Me is lead (Pb).

6 . The solid-state electrolyte of claim 1 , wherein Me is at least one Group 6 element.

7 . The solid-state electrolyte of claim 6 , wherein Me is molybdenum (Mo), tungsten (W), or combinations thereof.

8 . The solid-state electrolyte of claim 6 , wherein Me is molybdenum (Mo).

9 . The solid-state electrolyte of claim 6 , wherein Me is tungsten (W).

10 . The solid-state electrolyte of claim 1 , wherein Me is at least one Group 5 element.

11 . The solid-state electrolyte of claim 10 , wherein Me is niobium (Nb), tantalum (Ta), or combinations thereof.

12 . The solid-state electrolyte of claim 10 , wherein Me is niobium (Nb).

13 . The solid-state electrolyte of claim 10 , wherein Me is tantalum (Ta).

14 . The solid-state electrolyte of claim 1 further comprising a polymer binder.

15 . The solid-state electrolyte of claim 14 wherein the polymer binder comprises PVdF.

16 . The solid-state electrolyte of claim 1 further comprising a lithium salt.

17 . The solid-state electrolyte of claim 16 wherein the lithium salt is selected from the group consisting of lithium bis(trifluoromethanesulfonyl)imide (CF 3 SO 2 NLiSO 2 CF 3 ), lithium tetrafluoroborate (LiBF 4 ), lithium hexafluoroarsenate (LiAsF 6 ), lithium bis(oxalato)borate (LiB(C 2 O 4 ) 2 ), lithium chlorate (LiClO 4 ), lithium hexafluorophosphate (LiPF 6 ), lithium triflate (LiCF 3 SO 3 ), lithium bis(fluorosulfonyl)imide (LiFSi), or combinations thereof.

18 . The solid-state electrolyte of claim 16 wherein the lithium salt comprises lithium bis(trifluoromethanesulfonyl)imide (CF 3 SO 2 NLiSO 2 CF 3 ).

Assignees

• Wildcat discovery technologies inc

Inventors

• O'Neill Cory
• Li Bin
• Freigang Alex

Classifications

• H01M10/056 Primary

  characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M4/623

  fluorinated polymers · CPC title

• H01M2300/0068

  inorganic · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title