Primary lithium battery having a dme-free electrolyte

Patent metadata

Field	Value
Publication number	US-2017358802-A1
Application number	US-201715619810-A
Country	US
Kind code	A1
Filing date	Jun 12, 2017
Priority date	Jun 14, 2016
Publication date	Dec 14, 2017
Grant date	—

Abstract

A DME-free lithium battery includes a positive electrode, a negative electrode, a separator arranged between the positive electrode and the negative electrode, and a liquid electrolyte composed of a solvent and at least one lithium electrolyte salt and with which the electrode and the separator are impregnated, wherein the solvent includes propylene carbonate (PC) as a first solvent component and 1,3-dioxolane (DOL) as a second solvent component, and the positive electrode and/or the negative electrode have a proportion of carbon black having a BET surface area of at least 1 m 2 /g.

First claim

1 . A DME-free lithium battery comprising:
a positive electrode, a negative electrode, a separator arranged between the positive electrode and the negative electrode, and a liquid electrolyte composed of a solvent and at least one lithium electrolyte salt and with which the electrode and the separator are impregnated,
wherein
the solvent comprises propylene carbonate (PC) as a first solvent component and 1,3-dioxolane (DOL) as a second solvent component, and
the positive electrode and/or the negative electrode have a proportion of carbon black having a BET surface area of at least 1 m 2 /g.

2 . The battery according to claim 1 , wherein
the solvent comprises the PC in a proportion of 30% by volume to 60% by volume and the DOL in a proportion of 40% by volume to 70% by volume.

3 . The battery according to claim 1 , wherein
the solvent further comprises ethylene carbonate (EC) as a third solvent component, and the solvent comprises the PC in a proportion of 10% by volume to 60% by volume, the DOL in a proportion of 50% by volume to 70% by volume, and the EC in a proportion of 0% by volume to 50% by volume.

4 . The battery according to claim 2 , wherein
the solvent further comprises ethylene carbonate (EC) as a third solvent component, and the solvent comprises the PC in a proportion of 10% by volume to 60% by volume, the DOL in a proportion of 50% by volume to 70% by volume, and the EC in a proportion of 0% by volume to 50% by volume.

5 . The battery according to claim 1 , wherein
the electrolyte comprises lithium perchlorate (LiClO 4 ) as the at least one electrolyte salt, and LiClO 4 is present in the electrolyte in a concentration of 5% by weight to 17% by weight.

6 . The battery according to claim 2 , wherein
the electrolyte comprises lithium perchlorate (LiClO 4 ) as the at least one electrolyte salt, and LiClO 4 is present in the electrolyte in a concentration of 5% by weight to 17% by weight.

7 . The battery according to claim 3 , wherein
the electrolyte comprises lithium perchlorate (LiClO 4 ) as the at least one electrolyte salt, and LiClO 4 is present in the electrolyte in a concentration of 5% by weight to 17% by weight.

8 . The battery according to claim 4 , wherein
the electrolyte comprises lithium perchlorate (LiClO 4 ) as the at least one electrolyte salt, and LiClO 4 is present in the electrolyte in a concentration of 5% by weight to 17% by weight.

9 . The battery according to claim 1 , wherein
the positive electrode comprises manganese dioxide as an active material, and the negative electrode comprises metallic lithium as an active material.

10 . The battery according to claim 2 , wherein
the positive electrode comprises manganese dioxide as an active material, and the negative electrode comprises metallic lithium as an active material.

11 . The battery according to claim 3 , wherein
the positive electrode comprises manganese dioxide as an active material, and the negative electrode comprises metallic lithium as an active material.

12 . The battery according to claim 4 , wherein
the positive electrode comprises manganese dioxide as an active material, and the negative electrode comprises metallic lithium as an active material.

13 . The battery according to claim 5 , wherein
the positive electrode comprises manganese dioxide as an active material, and the negative electrode comprises metallic lithium as an active material.

14 . The battery according to claim 6 , wherein
the positive electrode comprises manganese dioxide as an active material, and the negative electrode comprises metallic lithium as an active material.

15 . The battery according to claim 7 , wherein
the positive electrode comprises manganese dioxide as an active material, and the negative electrode comprises metallic lithium as an active material.

16 . The battery according to claim 8 , wherein
the positive electrode comprises manganese dioxide as an active material, and the negative electrode comprises metallic lithium as an active material.

Assignees

• Varta Microbattery Gmbh

Inventors

• Kreidler Bernd
• Siwek Hanna

Classifications

• H01M2300/004

  Three solvents · CPC title

• H01M4/06

  Electrodes for primary cells · CPC title

• H01M4/502

  for non-aqueous cells (H01M4/505 takes precedence) · CPC title

• H01M4/382

  Lithium (H01M4/405 takes precedence) · CPC title

• H01M6/164 Primary

  by the solvent · CPC title