Non-aqueous organic electrolytic solution for lithium primary battery, and lithium primary battery

Patent metadata

Field	Value
Publication number	US-9484585-B2
Application number	US-201514613939-A
Country	US
Kind code	B2
Filing date	Feb 4, 2015
Priority date	Feb 5, 2014
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

There is provided non-aqueous organic electrolytic solution for a lithium primary battery which can be stored for long period at elevated temperatures or at the end stage of discharge. Non-aqueous organic electrolytic solution 20 for lithium primary battery 1 having a cathode active material which is manganese dioxide and an anode active material which is either of lithium or lithium alloy includes a base electrolytic solution that is composed of organic solvent and supporting electrolyte and to which either one of hydroxyphthalimide or hydroxyphthalimide derivative is added as an additive. An amount of the additive which is added to the base electrolytic solution is 0.1 wt % or more and 5.0 wt % or less. It is more preferable that the amount of the additive which is added to the base electrolytic solution is 0.1 wt % or more and 1.0 wt % or less.

First claim

What is claimed is:

1. A lithium primary battery, comprising:
a positive electrode which contains manganese dioxide as a cathode active material;
a negative electrode
which is composed of either lithium or lithium alloy, and
which has a surface area smaller than that of the positive electrode,
the lithium and lithium alloy serving as an anode active material;

a base electrolytic solution
that is composed of organic solvent and electrolyte; and

an additive which contains either one of hydroxyphthalimide and hydroxyphthalimide derivative
the additive of 0.1 wt % or more and 5.0 wt % or less is added to the base electrolytic solution.

2. A lithium primary battery according to claim 1 , wherein
the additive of 0.1 wt % or more and 1.0 wt % or less is added to the base electrolytic solution.

Assignees

• Fdk Corp
• Fdk Tottori Co Ltd

Inventors

• Fujita Yoshie
• Naruse Satoru
• Sunada Satoshi
• Nishimura Naoaki
• Kobashi Takahide

Classifications

• H01M4/502

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

• H01M4/405

  Alloys based on lithium · CPC title

• H01M4/382

  Lithium (H01M4/405 takes precedence) · CPC title

• H01M6/168 Primary

  by additives · CPC title

• H01M10/0567

  characterised by the additives · CPC title