A solid electrolyte glass for lithium or sodium ions conduction

Patent metadata

Field	Value
Publication number	US-2016365602-A1
Application number	US-201515121678-A
Country	US
Kind code	A1
Filing date	Feb 26, 2015
Priority date	Feb 26, 2014
Publication date	Dec 15, 2016
Grant date	—

Abstract

Glassy electrolyte for lithium or sodium ions conduction The present disclosure relates to the development and improvement of sodium or lithium-ion electrochemical devices, in particular to the development of a new glassy electrolyte comprising high ionic conductivity for batteries, capacitors, and other electrochemical devices comprising a solid electrolyte glass comprising the formula R 3-2x M x HalO wherein R is selected from the group consisting of lithium or sodium; M is selected from the group consisting of magnesium, calcium, strontium or barium; Hal is selected from the group consisting of fluorine, chlorine, bromine, iodine or mixtures thereof; X is the number of moles of M and 0≦x≦0.01 and the solid electrolyte glass has a glass transition point.

First claim

1 . A solid electrolyte glass comprising compound of formula R 3-2x M x HalO wherein
R is selected from the group consisting of lithium or sodium; M is selected from the group consisting of magnesium, calcium, strontium or barium; Hal is selected from the group consisting of fluorine, chlorine, bromine, iodine or mixtures thereof; X is the number of moles of M and 0≦x≦0.01; and the solid electrolyte glass has a glass transition point.

2 . The electrolyte glass according to claim 1 wherein R is lithium.

3 . The electrolyte glass according to claim 1 wherein R is sodium.

4 . The electrolyte glass according to claim 1 or 2 comprising an ionic conductivity of at least 13 mScm −1 at 25° C.

5 . The electrolyte glass according to the previous claim comprising an ionic conductivity of 13-60 mScm −1 at 25° C.

6 . The electrolyte glass according to the previous claim comprising an ionic conductivity of at least 25 mScm −1 at 25° C.

7 . The electrolyte glass according to claim 1 or 3 comprising an ionic conductivity of at least 17 mScm −1 at 25° C.

8 . The electrolyte glass according to the previous claim comprising an ionic conductivity of 17-105 mScm −1 at 25° C.

9 . The electrolyte glass according to the previous claim comprising an ionic conductivity of at least 31 mScm −1 at 25° C.

10 . The electrolyte glass according to any of the previous claims wherein X is 0.002, 0.005; 0.007 or 0.01.

11 . The electrolyte glass according to any of the previous claims wherein Hal is a mixture of chlorine and iodine.

12 . The electrolyte glass according to any of the wherein Hal is Hal=0.5Cl+0.51.

13 . The electrolyte glass according to any of the previous claims wherein Hal is a mixture of fluorine and iodine.

14 . The electrolyte glass according to any of the previous claims wherein R is lithium, M is barium, Hal is chlorine and x is 0.005.

15 . The electrolyte glass according to any of the previous claims wherein R is lithium, M is barium, Hal is a mixture of chlorine and iodine, x is 0.005.

16 . The electrolyte glass according to any of the previous claims wherein R is sodium, M is barium, Hal is chlorine and x is 0.005.

17 . An electrolyte composition comprising a compound of formula Na 3-2x M x HalO wherein
M is selected from the group consisting of magnesium, calcium, strontium or barium; Hal is selected from the group consisting of fluorine, chlorine, bromine, iodine or mixtures thereof; X is the number of moles of M and 0<x≦0.01.

18 . The composition according to the previous claim wherein M is barium, Hal is chlorine and x is 0.005.

19 . An electrochemical device comprising the electrolyte glass or composition referred in any of the claims 1 - 18 .

20 . A capacitor comprising the electrolyte glass or composition referred in any of the claims 1 - 18 .

21 . A battery comprising the electrolyte glass or composition referred in any of the claims 1 - 18 .

22 . An electrochemical device comprising at least one capacitor as referred in claim 20 and at least one battery as referred in claim 21 .

23 . A method for synthetizing a glass electrolyte comprising a compound of formula R 3-2x M x HalO wherein
R is lithium; M is selected from the group consisting of magnesium, calcium, strontium or barium; Hal is selected from the group consisting of fluorine, chlorine, bromine, iodine or mixtures thereof; X is the number of moles of M and 0≦x≦0.01; comprising the following steps: mixing a stoichiometric quantity of LiHal, LiOH, and one of the following compounds: Mg(OH) 2 ; Ca(OH) 2 , Sr(OH) 2 or Ba(OH) 2 ; adding to said mixture deionized water and mixing to form a solution in a closed container; heating said solution up to 250° C. during 2-8 h; opening the container to evaporate the excess of water in the heated product.

24 . The method according to the previous claim further comprising:
introducing the synthetized glass material between electrodes the electrodes of an electrochemical device; heating the glass up to 170-240° C. and cooling.

25 . A method for synthetizing a glass electrolyte comprising a compound of formula R 3-2x M x HalO wherein
R is sodium; M is selected from the group consisting of magnesium, calcium, strontium and barium; Hal is selected from the group consisting of fluorine, chlorine, bromine, iodine or mixtures thereof; X is the number of moles of M and 0≦x≦0.01; comprising the following steps: mixing a stoichiometry quantity of NaHal, NaOH and one of the following compounds: Mg(OH) 2 ; Ca(OH) 2 ; Sr(OH) 2 or Ba(OH) 2 ; adding to said mixture deionized water and mixing to form a solution in a closed container; heating the solution up to 70-90° C. for 2-8 h; increasing the temperature up to 190-250° C. for 2-8 h, maintaining said temperature for at least 2 h; opening the container to evaporate the excess water in the heated product.

26 . The method according to the previous claim further comprising:
introducing the synthetized glass material between electrodes; heating the glass up to 190-230° C. and cooling.

27 . A method for synthetizing a glass electrolyte comprising a compound of formula R 3-2x M x HalO wherein
R is lithium; M is selected from the group consisting of magnesium, calcium, strontium or barium; Hal is selected from the group consisting of fluorine, chlorine, bromine, iodine or mixtures thereof; X is the number of moles of M and 0≦x≦0.01; comprising the following steps: mixing a stoichiometry quantity of LiHal, LiOH and one of the following compounds: Mg(OH) 2 ; Ca(OH) 2 ; Sr(OH) 2 or Ba(OH) 2 ; adding to said mixture deionized water and mixing to form a solution in a closed container; heating said solution up to 250° C. during 2-8 h; opening the container to evaporate the excess of water in the heated product.

28 . The method according to the previous claim further comprising:
introducing the synthetized glass material between electrodes; heating the glass up to 170-240° C. and cooling.

29 . Use of the composition of formula R 3-2x M x HalO wherein
R is selected from the group consisting of lithium or sodium; M is selected from the group consisting of magnesium, calcium, barium or strontium; Hal is selected from the group consisting of fluorine, chlorine, bromine, iodine or mixtures thereof; X is the number of moles of M and 0≦x≦0.01; as an enhancer of the ionic conductivity of an electrolyte and/or of the electrochemical window of stability of an electrolyte.

Assignees

• Univ Do Porto
• Laboratório Nac De Energia E Geologia

Inventors

• Sousa Soares De Oliveira Braga Maria Helena
• Do Amaral Ferreira José Jorge

Classifications

• H01G11/56 Primary

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• H01G11/84

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• H01M10/052

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• H01M16/00

  Structural combinations of different types of electrochemical generators · CPC title

• Y02E60/13

  Energy storage using capacitors · CPC title