Spinel ferrite electrode

Patent metadata

Field	Value
Publication number	US-12027313-B1
Application number	US-202418599706-A
Country	US
Kind code	B1
Filing date	Mar 8, 2024
Priority date	Apr 13, 2022
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

A nanocomposite electrode and supercapacitor thereof are disclosed. The nanocomposite electrode includes a substrate, at least one binding compound, at least one carbonaceous compound, and vanadium doped spinel ferrite nanoparticles (V-SFNPs). The V-SFNPs have a formula of CoxNi1-xVyFe2-yOz, wherein x=0.1-0.9, y=0.01-0.10, and z=3-5. The substrate is at least partially coated on a first side with a mixture comprising the V-SFNPs, the at least one binding compound, and the at least one carbonaceous compound. Two of the nanocomposite electrodes are combined to form the supercapacitor.

First claim

The invention claimed is:

1. A spinel ferrite nanocomposite electrode, comprising:
a substrate made from at least one material selected from the group consisting of stainless steel, aluminum, nickel, copper and platinum;
polyvinylidene fluoride as a binding compound;
at least one carbonaceous compound; and
vanadium doped spinel ferrite nanoparticles (V-SFNPs);
wherein the V-SFNPs have a formula of Co x Ni 1-x V y Fe 2-y O z ;
wherein x=0.1-0.9, y=0.01-0.10, and z=3-5;

wherein the substrate is at least partially coated on a first side with a mixture comprising the V-SFNPs, the at least one binding compound, and the at least one carbonaceous compound.

2. The spinel ferrite nanocomposite electrode of claim 1 , wherein the V-SFNPs have:
a substantially spherical shape;
an average size of 10-1000 nm.

3. The spinel ferrite nanocomposite electrode of claim 1 , wherein the V-SFNPs comprises:
20-30 wt % oxygen, 1-10 wt % vanadium, 40-50 wt % iron, 10-20 wt % cobalt, and 10-20 wt % nickel, based on the total weight of the oxygen, vanadium, iron, cobalt, and nickel.

4. The spinel ferrite nanocomposite electrode of claim 1 , wherein the mixture comprises:
1-20 wt. % of the V-SFNPs; and
80-99 wt. % of the binding compound, and the carbonaceous compound based on the total weight of the V-SFNPs, the binding compound, and the carbonaceous compound.

5. The spinel ferrite nanocomposite electrode of claim 1 , having:
85-92 wt % carbon, 5-10 wt % oxygen, 0.1-2 wt % vanadium, 0.5-2 wt % iron, 0.5-1 wt % cobalt, and 0.5-1 wt % nickel, based on the total weight of the carbon, oxygen, vanadium, iron, cobalt, and nickel.

6. The spinel ferrite nanocomposite electrode of claim 1 , wherein the V-SFNPs are made by a method comprising:
mixing a cobalt (II) salt, a nickel salt, an iron (III) salt, and a vanadium (III) salt in water to form a mixture;
adjusting the pH of the mixture to 10-12 with a base to form a basic mixture;
heating the basic mixture to 150-200° C. for 10-20 hours to form a powder; and
washing the powder with water and drying at a temperature of 60-80° C. to form the V-SFNPs.

7. A method of making the spinel ferrite nanocomposite electrode of claim 1 , comprising:
mixing the binding compound and the carbonaceous compound for 1-4 hours at a temperature of 50-70° C. to form a paste;
adding 1-20 wt. % of the V-SFNPs, based on the total weight of the binding compound, the carbonaceous compound, and the V-SFNPs, into the paste and sonicating for 10-30 minutes creating a mixture;
coating the mixture onto the substrate to form the spinel ferrite nanocomposite electrode; and
drying the spinel ferrite nanocomposite electrode at a temperature less than 100° C.

Assignees

• Univ Imam Abdulrahman Bin Faisal

Inventors

• Cevik Emre
• Almessiere Munerah Abdullah
• Baykal Abdulhadi
• Bozkurt Ayhan

Classifications

• H01G11/36

  Nanostructures, e.g. nanofibres, nanotubes or fullerenes · CPC title

• H01G11/38

  Carbon pastes or blends; Binders or additives therein · CPC title

• H01G11/52

  Separators · CPC title

• H01G11/24

  characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor · CPC title

• Y02E60/13

  Energy storage using capacitors · CPC title