Substituted imidazole and benzimidazole lithium salts

Patent metadata

Field	Value
Publication number	US-2018375153-A1
Application number	US-201715698527-A
Country	US
Kind code	A1
Filing date	Sep 7, 2017
Priority date	Jun 26, 2017
Publication date	Dec 27, 2018
Grant date	—

Abstract

A new class of electrolyte salts that contain substituted imidazole or benzimidazole groups is described. The salts can be used in non-aqueous electrolytes in lithium or other alkali battery cells. When used with a lithium metal anode, the salts are electrochemically stable up to 5V vs. Li/Li+.

First claim

We claim:

1 . A composition comprising:

wherein Y is selected from the group consisting of cyanobenzyl, cyano, perfluoropolyether, and C x F 2x+1 groups, wherein x is an integer that ranges from 0 to 10;
each Z is selected independently from the group consisting of cyano, perfluoropolyether, and C x F 2x+1 groups, wherein x is an integer that ranges from 0 to 10;
n is an integer that ranges from 1 to 4; and
M is an alkali metal.

2 . The composition of claim 1 further comprising:
a material selected from the group consisting of one or more of polyethers, polyesters, polyalkoxysiloxanes, polyamines, polyimides, polyamides, poly alkyl carbonates, polynitriles, perfluoro polyethers, fluorocarbon polymers substituted with nitriles, fluorocarbon polymers substituted with carbonates, fluorocarbon polymers substituted with sulfones, polysiloxanes, polyphosphazines, polyolefins, polydienes, and alkyl carbonates;
wherein the composition is an electrolyte.

3 . A composition comprising:

wherein Y is selected from the group consisting of cyanobenzyl, cyano, perfluoropolyether, and C x F 2x+1 groups, wherein x is an integer that ranges from 0 to 10;
each Z is selected independently from the group consisting of cyano, perfluoropolyether, and C x F 2x+1 groups, wherein x is an integer that ranges from 0 to 10;
n is an integer that ranges from 1 to 4; and
M is an alkali metal.

4 . The composition of claim 3 further comprising:
a material selected from the group consisting of one or more of polyethers, polyesters, polyalkoxysiloxanes, polyamines, polyimides, polyamides, poly alkyl carbonates, polynitriles, perfluoro polyethers, fluorocarbon polymers substituted with nitriles, fluorocarbon polymers substituted with carbonates, fluorocarbon polymers substituted with sulfones, polysiloxanes, polyphosphazines, polyolefins, polydienes, and alkyl carbonates;
wherein the composition is an electrolyte.

5 . A composition comprising:

wherein each Z is selected independently from the group consisting of perfluoropolyether and C x F 2x+1 groups, wherein x is an integer that ranges from 0 to 10; and
M is an alkali metal.

6 . The composition of claim 5 further comprising:
a material selected from the group consisting of one or more of polyethers, polyesters, polyalkoxysiloxanes, polyamines, polyimides, polyamides, poly alkyl carbonates, polynitriles, perfluoro polyethers, fluorocarbon polymers substituted with nitriles, fluorocarbon polymers substituted with carbonates, fluorocarbon polymers substituted with sulfones, polysiloxanes, polyphosphazines, polyolefins, polydienes, and alkyl carbonates;
wherein the composition is an electrolyte.

7 . A composition comprising:

wherein each Z is selected independently from the group consisting of cyano, perfluoropolyether, and C x F 2x+1 groups, wherein x is an integer that ranges from 0 to 10; and
M is an alkali metal.

8 . The composition of claim 7 further comprising:
a material selected from the group consisting of one or more of polyethers, polyesters, polyalkoxysiloxanes, polyamines, polyimides, polyamides, poly alkyl carbonates, polynitriles, perfluoro polyethers, fluorocarbon polymers substituted with nitriles, fluorocarbon polymers substituted with carbonates, fluorocarbon polymers substituted with sulfones, polysiloxanes, polyphosphazines, polyolefins, polydienes, and alkyl carbonates;
wherein the composition is an electrolyte.

9 . A composition comprising:

wherein Ar is selected from the group consisting of phenyl, naphthyl, anthracenyl, pyridinyl, thienyl, imidazolyl, oxazolyl, and indolyl groups;
each Z is selected independently from the group consisting of cyano, perfluoropolyether, and C x F 2x+1 groups, wherein x is an integer that ranges from 0 to 10;
n is an integer that ranges from 1 to 9; and
M is an alkali metal.

10 . The composition of claim 9 further comprising:
a material selected from the group consisting of one or more of polyethers, polyesters, polyalkoxysiloxanes, polyamines, polyimides, polyamides, poly alkyl carbonates, polynitriles, perfluoro polyethers, fluorocarbon polymers substituted with nitriles, fluorocarbon polymers substituted with carbonates, fluorocarbon polymers substituted with sulfones, polysiloxanes, polyphosphazines, polyolefins, polydienes, and alkyl carbonates;
wherein the composition is an electrolyte.

11 . A composition comprising:

wherein Ar is selected from the group consisting of phenyl, naphthyl, anthracenyl, pyridinyl, thienyl, imidazolyl, oxazolyl, and indolyl groups;
each Z is selected independently from the group consisting of cyano, perfluoropolyether, and C x F 2x+1 groups, wherein x is an integer that ranges from 0 to 10;
m is an integer that ranges from 1 to 4;
n is an integer that ranges from 1 to 9; and
M is an alkali metal.

12 . The composition of claim 11 further comprising:
a material selected from the group consisting of one or more of polyethers, polyesters, polyalkoxysiloxanes, polyamines, polyimides, polyamides, poly alkyl carbonates, polynitriles, perfluoro polyethers, fluorocarbon polymers substituted with nitriles, fluorocarbon polymers substituted with carbonates, fluorocarbon polymers substituted with sulfones, polysiloxanes, polyphosphazines, polyolefins, polydienes, and alkyl carbonates;
wherein the composition is an electrolyte.

13 . A positive electrode, comprising:
positive electrode active material particles; electronically-conductive particles; and an electrolyte; wherein the electrolyte is selected from the group consisting of one or more of the composition according to claim 2 , the composition according to claim 4 , the composition according to claim 6 , the composition according to claim 8 , the composition according to claim 10 , and the composition according to claim 12 .

14 . The positive electrode of claim 13 wherein the electrolyte comprises lithium.

15 . The positive electrode of claim 13 wherein the positive electrode further comprises a binder, and the electrolyte is a liquid electrolyte.

16 . The positive electrode of claim 13 wherein the positive electrode comprises either lithium nickel cobalt aluminum oxide or lithium nickel cobalt manganese oxide, and the electrolyte comprises lithium.

17 . A battery cell, comprising:
a positive electrode comprising positive electrode active material particles, electronically-conductive particles, and a first electrolyte; a negative electrode comprising lithium metal or lithium alloy; and a separator region between the positive electrode and the negative electrode, the separator region comprising a second electrolyte, the second electrolyte providing ionic communication between the positive electrode and the negative electrode; wherein at least one of t

Assignees

• Seeo Inc
• Bosch Gmbh Robert

Inventors

• Yang Jin
• Eitouni Hany Basam
• Azagarsamy Malar
• Kozinsky Boris
• Samsonidze Georgy
• Molinari Nicola

Classifications

• C07D235/10

  Radicals substituted by halogen atoms or nitro radicals · CPC title

• H01M4/131

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

• H01M4/505

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M2300/0082

  Organic polymers · CPC title