Binary substituted vanadium phosphate electrode material

Patent metadata

Field	Value
Publication number	US-2024258519-A1
Application number	US-202318319147-A
Country	US
Kind code	A1
Filing date	May 17, 2023
Priority date	Jan 19, 2023
Publication date	Aug 1, 2024
Grant date	—

Abstract

The present invention relates to an electrode material. More particularly, the present invention relates to a binary substituted vanadium phosphate electrode active material and a battery comprising the same.

First claim

We claim:

1 . An electrode active material of formula 1

wherein,
A is selected from the group consisting of Li, Na and K,
B is a transition metal, a post-transition metal, or an alkaline earth metal,
C is selected from the group consisting of F, Cl, Br and I,
V is vanadium,
PO 4 is phosphate,
x is a real number ranging between 0.001 to 1.0, and
y is a real number ranging between 0.001 to 1.0.

2 . The electrode active material according to claim 1 , wherein B is selected from the group consisting of Mg, Ti, Cr, Al, Fe, Bi, Sr, Mn, Co, Ni, Cu, Zn, Sc, Tc, Pd, Mo, Sn, and W.

3 . The electrode active material according to claim 1 , wherein x ranges between 0.01 to 0.5.

4 . The electrode active material according to claim 1 , wherein y ranges between 0.01 to 0.2.

5 . A method for producing the electrode active material of formula 1

wherein,
A is selected from the group consisting of Li, Na and K,
B is a transition metal, a post-transition metal, or an alkaline earth metal,
C is selected from the group consisting of F, Cl, Br and I,
V is vanadium,
PO 4 is phosphate,
x is a real number ranging between 0.001 to 1.0, and
y is a real number ranging between 0.001 to 1.0.
the method comprising:
(a) obtaining a solution comprising precursors of A, B, C, V, and PO 4 ,
(b) mixing the solution at a temperature in a range of 60° C. to 120° C. to obtain a gel,
(c) drying the gel by freeze drying, and
(d) calcining the dried gel to obtain the electrode active material.

6 . The method according to claim 5 , wherein the step of drying is carried out at a temperature in a range of −30° C. to −55° C.

7 . The method according to claim 5 , wherein the solution further comprises a carbon source selected from the group consisting of citric acid, glucose, sucrose, fructose, ascorbic acid, lignin, polysaccharide, hydrolyzed starch, dextrin, and molasses.

8 . The method according to claim 5 further comprising the step of grinding the dried gel, prior to the step of calcining the dried gel.

9 . An electrode material for metal ion battery comprising the electrode active material of formula 1

wherein,
A is selected from the group consisting of Li, Na and K,
B is a transition metal, a post-transition metal, or an alkaline earth metal,
C is selected from the group consisting of F, Cl, Br and I,
V is vanadium,
PO 4 is phosphate,
x is a real number ranging between 0.001 to 1.0, and
y is a real number ranging between 0.001 to 1.0.

10 . The electrode material according to claim 9 , wherein the electrode material further comprises a binder.

11 . The electrode material according to claim 9 , wherein the electrode material further comprises an electrically conductive material selected from carbon black, acetylene black, ketjen black, reduced graphene oxide, and carbon nanotube.

Assignees

• Hindustan Petroleum Corp Ltd

Inventors

• Narayanan Krishnamurthy
• Kanakaraj Rajkumar
• Ramachandrarao Bojja

Classifications

• H01M4/136

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

• H01M10/054

  Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title

• H01M4/5825 Primary

  Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• C01B25/455

  containing halogen {(completely halogenated alkali metal phosphates C01D, e.g. lithium hexafluorophosphate C01D15/005)} · CPC title