Battery including beta-delithiated layered nickel oxide electrochemically active cathode material

Patent metadata

Field	Value
Publication number	US-2024006607-A1
Application number	US-202318369617-A
Country	US
Kind code	A1
Filing date	Sep 18, 2023
Priority date	May 9, 2017
Publication date	Jan 4, 2024
Grant date	—

Abstract

The invention is directed towards an electrochemically active cathode material for a battery. The electrochemically active cathode material includes a non-stoichiometric beta-delithiated layered nickel oxide. The non-stoichiometric beta-delithiated layered nickel oxide has a chemical formula. The chemical formula is Li x A y Ni 1+a−z M z O 2 ·nH 2 O where x is from about 0.02 to about 0.20; y is from about 0.03 to about 0.20; a is from about 0.02 to about 0.2; z is from about 0 to about 0.2; and n is from about 0 to about 1. Within the chemical formula, A is an alkali metal. The alkali metal includes potassium, rubidium, cesium, and any combination thereof. Within the chemical formula, M comprises an alkaline earth metal, a transition metal, a non-transition metal, and any combination thereof.

First claim

What is claimed:

1 . A method of preparing a cathode material comprising:
oxidizing a non-stoichiometric lithium nickelate having a general formula Li 1−a N 1+a−z M z O 2 , wherein 0.02≤a<0.2 and 0≤z<0.2, with an oxidant selected from the group of sodium peroxydisulfate, potassium peroxydisulfate, ammonium peroxydisulfate, sodium hypochlorite, sodium permanganate, potassium permanganate, sodium dichromate, potassium dichromate, and a combination thereof, to provide a non-stoichiometric alpha-delithiated layered nickel oxide having a general formula Li x H w Ni 1−a−z M z O 2 , wherein 0.02≤x≤0.2, 0≤w≤0.2, 0.02≤a≤0.2 and 0≤z<0.2.

2 . The method of claim 1 , wherein z is 0, such that the non-stoichiometric lithium nickelate has a formula Li x H w Ni 1−a O 2 , wherein 0.02≤x≤0.2, 0≤w≤0.2 and 0.02≤a≤0.2.

Assignees

• Duracell Us Operations Inc

Inventors

• Nelson Jennifer A
• Christian Paul Albert
• Hackney Stephen A

Classifications

• C01G53/82 Primary

  Compounds containing nickel, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

• 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

• H01M6/04

  Cells with aqueous electrolyte · CPC title

• C01G53/42

  containing alkali metals, e.g. LiNiO2 · CPC title

• C01G53/66

  containing alkaline earth metals, e.g. SrNiO3 or SrNiO2 · CPC title