Solid-state battery and method for manufacturing electrode active material

Patent metadata

Field	Value
Publication number	US-10147937-B2
Application number	US-201414913166-A
Country	US
Kind code	B2
Filing date	Aug 27, 2014
Priority date	Sep 2, 2013
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

One embodiment provides a solid-state battery that has a positive-electrode layer; a negative-electrode layer; and a lithium-ion-conducting solid electrolyte layer disposed between the positive-electrode layer and the negative-electrode layer. The positive-electrode layer contains a positive-electrode active material and a solid electrolyte comprising a hydride of a complex. Said positive-electrode active material is sulfur-based, and the solid electrolyte layer contains a solid electrolyte comprising a hydride of a complex.

First claim

The invention claimed is:

1. A solid-state battery comprising:
a positive-electrode layer;
a negative-electrode layer; and
a lithium-ion-conducting solid electrolyte layer disposed between the positive-electrode layer and the negative-electrode layer, wherein
the positive-electrode layer contains a positive-electrode active material and a complex hydride solid electrolyte,
the positive-electrode active material is a sulfur-based electrode active material comprising a sulfur-polyacrylonitrile, S-carbon composite, or NiS, and
the solid electrolyte layer contains a complex hydride solid electrolyte.

2. The solid-state battery according to claim 1 , wherein the sulfur-based electrode active material is selected from the group consisting of S-carbon composite, and NiS.

3. The solid-state battery according to claim 1 , wherein the complex hydride solid electrolyte is LiBH 4 or a combination of LiBH 4 and an alkali metal compound represented by Formula (1) below:
MX  (1),

wherein M represents an alkali metal atom selected from the group consisting of a lithium atom, a rubidium atom, and a cesium atom, and X represents a halogen atom or an NH 2 group.

4. The solid-state battery according to claim 3 , wherein the alkali metal compound is selected from the group consisting of a rubidium halide, a lithium halide, a cesium halide, and a lithium amide.

5. The solid-state battery according to claim 1 , wherein the positive-electrode layer is formed by pressing.

Assignees

• Mitsubishi Gas Chemical Co
• Tohoku Techno Arch Co Ltd

Inventors

• Nogami Genki
• Taniguchi Mitsugu
• Tazawa Masaru
• UNEMOTO Atsushi
• Matsuo Motoaki
• Orimo Shinichi

Classifications

• H01M10/0562 Primary

  Solid materials · CPC title

• H01M4/364

  as mixtures · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M4/1397

  of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy · CPC title

• H01M4/137

  Electrodes based on electro-active polymers · CPC title