Organic electrolyte solution including thiophene-based compound and nitrile-based compound and lithium battery comprising the same

Patent metadata

Field	Value
Publication number	US-9640838-B2
Application number	US-201314143533-A
Country	US
Kind code	B2
Filing date	Dec 30, 2013
Priority date	May 15, 2013
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

An organic electrolyte solution and a lithium battery using the same are disclosed. The organic electrolyte solution includes a lithium salt, an organic solution, a thiophene-based compound and a nitrile-based compound.

First claim

What is claimed is:

1. An organic electrolyte solution, comprising:
a lithium salt;
an organic solution;
a thiophene-based compound, wherein the thiophene-based compound is

a nitrile-based compound; wherein the nitrile-based compound is

2. The organic electrolyte solution of claim 1 , wherein the thiophene-based compound is present in an amount from about 0.001 to about 5 wt % based on total weight of the organic electrolyte solution.

3. The organic electrolyte solution of claim 1 , wherein the nitrile-based compound is present in an amount from about 0.1 to about 10 wt % based on total weight of the organic electrolyte solution.

4. The organic electrolyte solution of claim 1 , wherein the concentration of the lithium salt in the electrolyte is from about 0.01 to about 2.0M.

5. The organic electrolyte solution of claim 1 , wherein the organic solution comprises a low viscosity solvent.

6. The organic electrolyte solution of claim 1 , wherein the organic solution is selected from dialkyl carbonate, cyclic carbonate, linear or cyclic ester, linear or cyclic amide, aliphatic nitrile, linear or cyclic ether, and derivatives thereof.

7. The organic electrolyte solution of claim 1 , wherein the organic solution is selected from dimethyl carbonate (DMC), ethylmethyl carbonate (EMC), methylpropyl carbonate, ethylpropyl carbonate, diethyl carbonate (DEC), dipropyl carbonate, propylene carbonate (PC), ethylene carbonate (EC), fluoroethylene carbonate (FEC), butylene carbonate, ethyl propionate, ethyl butyrate, acetonitrile, succinonitrile (SN), dimethylsulfoxide, dimethylformamide, dimethylacetamide, γ-valerolactone, γ-butyrolactone, and tetrahydrofuran.

8. A lithium battery comprising an organic electrolyte solution according to claim 1 .

Assignees

• Samsung Sdi Co Ltd

Inventors

• Egorov Vladimir
• Shin Woo-Cheol
• Yu Jung-Yi
• Han Sang-Il
• Kim Sang-Hoon
• Kim Duck-Hyun
• Jeong Myung-Hwan
• Lee Seung-Tae
• Bae Tae-Hyun
• Lee Mi-Hyun
• Lee Eon-Mi
• Lee Ha-Rim
• Kim Moon-Sung
• Cho In-Haeng
• Cho E-Rang
• Choi Dong-Myung
• Khasanov Makhmut
• Shatunov Pavel Alexandrovich
• Tereshchenko Alexey
• Chernyshov Denis

Classifications

• H01M10/052

  Li-accumulators · CPC title

• H01M10/0569

  characterised by the solvents · CPC title

• H01M10/0567 Primary

  characterised by the additives · CPC title

• H01M2300/0028

  characterised by the solvent · CPC title

• H01M2300/004

  Three solvents · CPC title