Battery

Patent metadata

Field	Value
Publication number	US-2024136521-A1
Application number	US-202318526746-A
Country	US
Kind code	A1
Filing date	Dec 1, 2023
Priority date	Jun 2, 2021
Publication date	Apr 25, 2024
Grant date	—

Abstract

A battery according to the present disclosure includes: a positive electrode; a negative electrode; and an electrolyte layer positioned between the positive electrode and the negative electrode. The positive electrode includes a positive electrode material. The positive electrode material includes a positive electrode active material and a first solid electrolyte material. The positive electrode active material includes an oxide consisting of Li, Ni, Mn, and O. The first solid electrolyte material includes: Li; at least one selected from the group consisting of metalloid elements and metal elements except Li; and at least one selected from the group consisting of F, Cl, and Br. The negative electrode includes an alloy as a negative electrode active material, and the alloy includes Ni and Bi.

First claim

What is claimed is:

1 . A battery comprising:
a positive electrode; a negative electrode; and an electrolyte layer positioned between the positive electrode and the negative electrode, wherein the positive electrode includes a positive electrode material, the positive electrode material includes a positive electrode active material and a first solid electrolyte material, the positive electrode active material includes an oxide consisting of Li, Ni, Mn, and O, the first solid electrolyte material includes: Li; at least one selected from the group consisting of metalloid elements and metal elements except Li; and at least one selected from the group consisting of F, Cl, and Br, and the negative electrode includes an alloy as a negative electrode active material, the alloy including Ni and Bi.

2 . The battery according to claim 1 , wherein
the first solid electrolyte material coats at least a portion of a surface of the positive electrode active material.

3 . The battery according to claim 1 , wherein
the positive electrode material further includes a second electrolyte material that is a material having composition different from composition of the first solid electrolyte material.

4 . The battery according to claim 1 , wherein
the positive electrode active material includes a material represented by the following composition formula (1)
LiNi x Mn 2−x O 4   Formula (1), and

the composition formula (1) satisfies 0<x<2.

5 . The battery according to claim 4 , wherein
the composition formula (1) satisfies 0<x<1.

6 . The battery according to claim 5 , wherein
the composition formula (1) satisfies x=0.5.

7 . The battery according to claim 1 , wherein
the oxide has a spinel structure.

8 . The battery according to claim 1 , wherein
the first solid electrolyte material includes Li, Ti, Al, and F.

9 . The battery according to claim 1 , wherein
the negative electrode includes, as a main component of the negative electrode active material, the alloy including Ni and Bi.

10 . The battery according to claim 1 , wherein
the alloy including Ni and Bi is represented by the following composition formula (4)
NiBi a   Formula (4), and

the composition formula (4) satisfies 0<a≤3.

11 . The battery according to claim 10 , wherein
the composition formula (4) satisfies a=1.

12 . The battery according to claim 1 , wherein
the negative electrode is a plating layer.

13 . The battery according to claim 3 , wherein
the second electrolyte material includes a material represented by the following composition formula (3)
Li α3 M β3 X γ3 O δ3   Formula (3)

where α3, β3, and γ3 are each a value greater than 0, and δ3 is a value equal to or greater than 0, M is at least one selected from the group consisting of metalloid elements and metal elements except Li, and X is at least one selected from the group consisting of F, Cl, Br, and I.

14 . The battery according to claim 13 , wherein
the composition formula (3) satisfies: 1≤α3≤4; 0<β3≤2; 3≤γ3<7; and 0≤δ3≤2.

15 . The battery according to claim 14 , wherein
the composition formula (3) satisfies: 2.5≤α3≤3; 1≤β3≤1.1; γ3=6; and δ3=0.

16 . The battery according to claim 1 , wherein
the electrolyte layer includes a sulfide solid electrolyte.

17 . The battery according to claim 16 , wherein
the sulfide solid electrolyte is Li 6 PS 5 Cl.

18 . The battery according to claim 1 , wherein
the electrolyte layer includes a material including: Li; at least one selected from the group consisting of metalloid elements and metal elements except Li; and at least one selected from the group consisting of F, Cl, and Br.

19 . The battery according to claim 18 , wherein
the electrolyte layer includes Li 3 YBr 2 Cl 4 .

20 . The battery according to claim 1 , wherein
the electrolyte layer includes a first electrolyte layer and a second electrolyte layer, the first electrolyte layer is positioned between the positive electrode and the negative electrode, and the second electrolyte layer is positioned between the first electrolyte layer and the negative electrode.

21 . The battery according to claim 20 , wherein
the positive electrode material further includes a second electrolyte material that is a material having composition different from composition of the first solid electrolyte material, and the first electrolyte layer includes a material having the same composition as composition of the second electrolyte material.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Miyamoto Yumi
• Fujimoto Masahisa
• Oto Takashi
• NAKAMA Yoshimasa

Classifications

• H01M4/525 Primary

  of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title

• H01M4/505

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title

• H01M10/0562

  Solid materials · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title