Aqueous dual-ion secondary battery

Patent metadata

Field	Value
Publication number	US-10644358-B2
Application number	US-201816023149-A
Country	US
Kind code	B2
Filing date	Jun 29, 2018
Priority date	Jul 26, 2017
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

Disclosed is a dual-ion secondary battery of high power and a high level of safety. The dual-ion secondary battery is an aqueous dual-ion secondary battery including: a cathode; an anode; and an aqueous electrolyte solution, wherein the cathode includes graphite as a cathode active material, the anode includes titanium oxide as an anode active material, and the aqueous electrolyte solution contains no less than 10 mol of lithium bis(trifluoromethanesulfonyl)imide per kilogram of water.

First claim

What is claimed is:

1. An aqueous dual-ion secondary battery comprising:
a cathode;
an anode; and
an aqueous electrolyte solution,
wherein the cathode includes graphite as a cathode active material, and the cathode active material is contained in a cathode active material layer in an amount of between 40 mass % to 99 mass % of the cathode active material layer,
the anode includes titanium oxide as an anode active material, and
the aqueous electrolyte solution contains no less than 10 mol of lithium bis(trifluoromethanesulfonyl)imide per kilogram of water.

2. The aqueous dual-ion secondary battery of claim 1 , wherein the cathode active material does not include lithium.

Assignees

• Toyota Motor Co Ltd

Inventors

• Tojigamori Takeshi
• Nakayama Hideki

Classifications

• H01M4/583

  Carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title

• H01M10/38 Primary

  Construction or manufacture · CPC title

• H01M4/48

  of inorganic oxides or hydroxides · CPC title

• H01M10/36 Primary

  Accumulators not provided for in groups H01M10/05-H01M10/34 · CPC title

• H01M4/587

  for inserting or intercalating light metals · CPC title