Panasonic Corporation

Kyoto University

Toyota Jidosha Kabushiki Kaisha

Honda Motor Co., Ltd.

Gs Yuasa International Ltd.

Kyoro University

Toshiro Hirai

Zempachi Ogumi

Jun-ichi Yamaki

Toru Matsui

Akiyoshi Nakata

Tooru Matsui

Tadashi Kakeya

Yukinori Koyama

Koji Suto

Hajime Arai

Hideyuki Horino

Ken-ichi Okazaki

Junichi Yamaki

The present application provides an electrochemical energy storage device with a desirable reaction reversibility by using a metal halide as an electrode active material. The electrochemical energy storage device disclosed herein includes: a positive electrode; a negative electrode; and a non-aqueous electrolyte in contact with the positive electrode and the negative electrode, wherein: at least one of the positive electrode and the negative electrode contains a metal halide as an electrode active material; and the non-aqueous electrolyte contains, as a solvent, an ionic liquid of which a component is a cation having an alkoxyalkyl group.

Electrochemical energy storage device

A secondary battery in which the difference between the voltage at the time of discharging and the voltage at the time of charging is small, ensuring good energy efficiency, and the charge/discharge life is long. Therefore, in order to attain the above-described object, a secondary battery containing a positive electrode, a negative electrode, and an electrolytic solution, wherein at least one of the positive electrode and the negative electrode contains, as the active material, at least one selected from the group consisting of a metal ion-containing fluoride, a metal oxide, a metal sulfide, a metal nitride, and a metal phosphide; the electrolytic solution contains an anion receptor; and the anion receptor forms a salt or a complex with an anion contained in the active material, thereby enabling the active material to dissolve in the electrolytic solution.

Secondary battery

The present invention provides: a non-aqueous electrolyte for an electrochemical device, having ion conductivity sufficient for practical use and capable of improving energy density; a method for producing the same; and an electrochemical device using the same. The non-aqueous electrolyte for an electrochemical device includes a non-aqueous solvent and an alkaline earth metal chloride. The alkaline earth metal chloride is dissolved in an amount of 0.015 mol or more relative to 1 mol of the non-aqueous solvent. The total content of the non-aqueous solvent and the alkaline earth metal chloride is 70 mass % or more in the non-aqueous electrolyte.

Non-aqueous electrolyte for electrochemical devices, method for producing the same, and electrochemical device using the same

An alkaline storage battery includes a positive electrode, a negative electrode containing, as an active material, at least one of a metal capable of forming dendrites and a metal compound thereof, and an alkaline electrolyte solution, wherein a compound having a primary amino group and having no carboxyl group is contained in the alkaline electrolyte solution in an amount greater than or equal to 7% by volume.

Alkaline storage battery

An electrochemical energy storing device disclosed herein includes a positive electrode containing a positive-electrode active material, a negative electrode, and a nonaqueous electrolyte solution which is in contact with the positive electrode and the negative electrode. The positive-electrode active material in a discharged state contains at least one selected from the group consisting of an alkali metal chloride, an alkaline-earth metal chloride, and a quaternary alkylammonium chloride. The nonaqueous electrolyte solution contains, as a solvent, an ionic liquid including cations having an alkoxyalkyl group as a component.

Electrochemical energy storing device

Disclosed is a high-capacity electrochemical energy storage device in which a conversion reaction proceeds as the oxidation-reduction reaction, and the separation (hysteresis) between the electrode potentials for oxidation and reduction is small. The electrochemical energy storage device includes a first electrode including a first active material, a second electrode including a second active material, and a non-aqueous electrolyte interposed between the first and second electrodes. At least one of the first and second active materials is a metal salt having a polyatomic anion and a metal ion, and the metal salt is capable of oxidation-reduction reaction involving reversible release and acceptance of the polyatomic anion.

Electrochemical energy storage device which exhibits capacity through a conversion reaction, and active material for the same and production method thereof

An exemplary electrochemical energy storage device includes: a positive electrode including a positive electrode active material; a negative electrode including a negative electrode active material; and a non-aqueous electrolytic solution. The non-aqueous electrolytic solution includes an electrolyte salt represented by Li(XSONSOY) (where X and Y are any of F, CFand (CF), and (CF)forms a cyclic imide anion), an organic solvent which is capable of dissolving the electrolyte salt, and a polyethylene glycol of which both terminals are not OH. The positive electrode active material includes a chloride of Cu, Bi or Ag, and the negative electrode active material includes lithium.

An exemplary electrochemical energy storage device includes: a positive electrode including a positive electrode active material; a negative electrode including a negative electrode active material; and a non-aqueous electrolytic solution including LiCl, at least one of Li(XSONSOY) (where X and Y are any of F, CFand (CF), and (CF)forms a cyclic imide anion) and LiBF, and at least one of tetrahydrofuran and a polyethylene glycol of which both terminals are alkyl groups, the non-aqueous electrolytic solution being in contact with the positive electrode and the negative electrode, wherein the positive electrode active material includes a chloride of Cu, Bi or Ag, or the negative electrode active material includes magnesium chloride.

Growing community of inventors

Tokyo, Japan

Toshiro Hirai