Active material for a positive electrode of a battery cell, positive electrode, and battery cell

Patent metadata

Field	Value
Publication number	US-10790502-B2
Application number	US-201615759877-A
Country	US
Kind code	B2
Filing date	Sep 5, 2016
Priority date	Sep 16, 2015
Publication date	Sep 29, 2020
Grant date	Sep 29, 2020

Abstract

A positive active material for a positive electrode of a battery cell which includes a first component containing Li 2 MnO 3 . The first component includes a doping with nitrogen ions N 2− which replace a portion of the oxygen ions O 2− of component. A positive electrode of a battery cell which includes a positive material, and a battery cell which includes at least one positive electrode, are also described.

First claim

What is claimed is:

1. A positive active material for a positive electrode of a battery cell, comprising:
a first component containing a compound having a general formula:
Li 2-z Na z MnO 3-y N y ;

where 3>y>0; and
2≥z>0, so that z is greater than zero for Na (Sodium).

2. The positive active material as recited in claim 1 , wherein 1.5≥y>0.

3. The positive active material as recited in claim 1 , wherein 0.5≥y>0.

4. The positive active material as recited in claim 1 , wherein 1≥z≥0.1.

5. The positive active material as recited in claim 1 , wherein the positive active material further includes a second component containing LiMO 2 , M being a transition metal selected the elements nickel, cobalt, and/or manganese.

6. The positive active material as recited in claim 4 , wherein the positive active material includes a compound having a formula:
x (LiMO 2 ):1 −x (Li 2-z Na z MnO 3-y N y );
where 1>x≥0;
3>y>0; and
2≥z>0, so that z is greater than zero for Na (Sodium).

7. A positive electrode of a battery cell, comprising:
a positive active material, the positive active material including:
a first component containing a compound having a general formula:
Li 2-z Na z MnO 3-y N y ;

where 3>y>0; and
2≥z>0, so that z is greater than zero for Na (Sodium).

8. The positive electrode as recited in claim 7 , further comprising:
a coating containing aluminum fluoride (AlF 3 ) applied to the positive active material.

9. The positive electrode as recited in claim 7 , further comprising:
a coating containing carbon applied to the positive active material.

10. A battery cell which includes at least one positive electrode, the positive electrode including a positive active material, the positive active material comprising:
a first component containing a compound having a general formula:
Li 2-z Na z MnO 3-y N y ;

where 3>y>0; and
2≥z>0, so that z is greater than zero for Na (Sodium).

Assignees

• Bosch Gmbh Robert

Inventors

• Marusczyk Anika
• Eckl Thomas

Classifications

• H01M4/505

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

• H01M4/364 Primary

  as mixtures · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M4/131

  Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title