Anode compartment with a collector made of amorphous-alloy

Patent metadata

Field	Value
Publication number	US-2017005324-A1
Application number	US-201415105392-A
Country	US
Kind code	A1
Filing date	Dec 17, 2014
Priority date	Dec 18, 2013
Publication date	Jan 5, 2017
Grant date	—

Abstract

An anode compartment for rechargeable lithium or sodium batteries, including: a solid electrolyte; a collector deposited on the solid electrolyte; and an active material made of lithium metal or sodium metal which has been grown between the solid electrolyte and the collector in order to form an electrode made of lithium metal or sodium metal with the collector, in which the collector is made of an amorphous alloy. A method for manufacturing such an anode compartment and a battery including said anode compartment is also presented.

First claim

1 . A lithium or sodium rechargeable battery anode compartment for rechargeable lithium or sodium batteries comprising:
a solid electrolyte; a collector deposited on the solid electrolyte; and an active material made of lithium metal or sodium metal that has been grown between the solid electrolyte and the collector, thus forming with the collector an electrode made of lithium metal or sodium metal, wherein the collector is made of an amorphous alloy.

2 . The lithium or sodium rechargeable battery anode compartment according to claim 1 , wherein the amorphous alloy has a maximum relative coefficient of elongation greater than 1.8%

3 . The lithium or sodium rechargeable battery anode compartment according to claim 1 , wherein the amorphous alloy contains in total less than 10% by number of Si, Sn and Ag atoms.

4 . The lithium or sodium rechargeable battery anode compartment according to claim 1 , wherein the amorphous alloy is Cu x Zr 1-x , with x comprised between 0.25 and 0.75.

5 . The lithium or sodium rechargeable battery anode compartment according to claim 1 , wherein the collector is in the form of a fine layer with a thickness of less than 1 μm.

6 . The lithium or sodium rechargeable battery anode compartment according to claim 1 , wherein the solid electrolyte is made of a ceramic material.

7 . A method to manufacture of an a lithium or sodium rechargeable battery anode compartment comprising:
a solid electrolyte; a collector made of amorphous-alloy; and an active material made of lithium metal or sodium metal between the solid electrolyte and the collector;
the method comprising the steps of:
deposition of an amorphous alloy on the solid electrolyte, thus forming the collector;
growing an active material made of lithium metal or sodium metal between the solid electrolyte and the collector; and
retrieving the lithium or sodium rechargeable battery anode compartment.

8 . The method according to claim 7 , wherein the amorphous alloy is deposited on the solid electrolyte by cathodic sputtering or ion beam sputtering.

9 . The method according to claim 7 , wherein the amorphous alloy is Cu x Zr 1-x , with x comprised between 0.25 and 0.75.

10 . The method according to claim 7 , wherein the active material is grown between the solid electrolyte and the collector by electrochemical deposition.

11 . The method according to claim 7 , wherein the solid electrolyte is made of a ceramic material.

12 . A battery comprising:
a cathode, a liquid electrolyte and a lithium or sodium rechargeable battery anode compartment according to claim 1 .

Assignees

• Electricite De France
• Centre Nat De La Rech Scient - Cnrs -

Inventors

• Stevens Philippe
• Toussaint Gwenaelle
• Puech Laurent
• Vinatier Philippe

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M4/381

  Alkaline or alkaline earth metals elements (H01M4/40 takes precedence) · CPC title

• H01M2300/0068

  inorganic · CPC title

• H01M10/054

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

• H01M2004/027

  Negative electrodes · CPC title