Lithium-substituted magnesium ferrite material based hydroelectric cell and process for preparation thereof

Patent metadata

Field	Value
Publication number	US-10752515-B2
Application number	US-201615067496-A
Country	US
Kind code	B2
Filing date	Mar 11, 2016
Priority date	Mar 23, 2015
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

The present invention describes a lithium-substituted magnesium ferrite material based hydroelectric cell and process for preparation thereof. A novel galvanic cell process of generating electric current in distilled water by lithium substituted magnesium ferrite hydroelectric cell has been developed. A synthesis process of ferrite pellet having zinc anode and silver inert electrode has been developed. The material splits water molecules and conducts ions within porous ferrite. Split ions electrochemically react with electrodes and form zinc hydroxide at anode and hydrogen gas at silver electrode. This hydroelectric cell has generated 5 mA short circuit current and 950 mV open cell voltage. Current increased to 20 mA by thermally deposited Zn electrode on a ferrite pellet. The cell is very economical and highly sensitive towards electrolysis of water molecules. It is a green source for producing energy and has a potential to excel from existing electrochemical batteries.

First claim

We claim:

1. A lithium substituted magnesium ferrite material comprising a porosity in a range of 32-38% and a grain size in a range of 50-800 nm, wherein the lithium substituted magnesium ferrite material is made from starting materials magnesium carbonate, lithium carbonate, and iron oxide, each in a molar ratio in a range of 0.75 to 0.85: 0.05 to 0.15: 0.95 to 1.05, respectively.

2. The lithium substituted magnesium ferrite material as claimed in claim 1 , wherein the lithium substituted magnesium ferrite material product is made from starting materials magnesium carbonate, lithium carbonate, and iron oxide, each in a molar ratio of 0.8:0.1:1, respectively.

3. The lithium substituted magnesium ferrite material of claim 1 , wherein the lithium substituted magnesium ferrite material has a square dimension 24×24 mm after undergoing an applied pressure of 10 tons.

4. A hydroelectric cell comprising a lithium substituted magnesium ferrite material, comprised of three parts, i) the lithium substituted magnesium ferrite material of claim 1 ii) a zinc plate contacted on a first side of said lithium substituted magnesium ferrite material as an anode, and iii) comb electrodes of silver deposited by radio frequency sputtering as an inert electrode on a second side of said lithium substituted magnesium ferrite material, dipping said hydroelectric cell in water to generate a stable electric current in a range of 5 to 0.3 mA and voltage in a range of 950-800 mV for a period in the range of 0.17 to 380 hrs.

5. The hydroelectric cell of claim 4 , wherein the hydroelectric cell generates by-products of zinc hydroxides.

6. The hydroelectric cell of claim 4 , wherein the water is deionized water, distilled water or sea water.

7. The hydroelectric cell of claim 6 , wherein the water is deionized water or distilled water.

8. The hydroelectric cell of claim 4 , wherein three cells of 24 mm×24 mm size are connected in series, and when dipped in the water, the three cells generate 2.8 V and 5 mA for a period of 9 to 10 days.

9. A hydroelectric cell comprised of a lithium substituted magnesium ferrite material wherein the lithium substituted magnesium ferrite material is made from starting materials magnesium carbonate, lithium carbonate, and iron oxide, each in a molar ratio in a range of 0.75 to 0.85: 0.05 to 0.15: 0.95 to 1.05, respectively with a porosity in a range of 32-38% and a grain size in a range of 50-800 nm.

10. The hydroelectric cell of claim 9 , wherein the lithium substituted magnesium ferrite material is made from starting materials magnesium carbonate, lithium carbonate, and iron oxide, each in a molar ratio of 0.8:0.1:1, respectively.

11. The hydroelectric cell of claim 9 , comprising the lithium substituted magnesium ferrite material, a zinc electrode, and a silver electrode, comprising
i) a pellet comprising the lithium substituted magnesium ferrite material,
ii) wherein the zinc electrode comprises a zinc plate adjacent to one face of the pellet working as an anode, and
iii) wherein the silver electrode comprises a comb electrode of silver deposited by radio frequency sputtering adjacent to another side of the pellet working as an inert electrode.

12. The hydroelectric cell of claim 11 , wherein said hydroelectric cell is capable of generating a stable electric current in the range of 5 to 0.3 mA and voltage in the range of 950-800 mV for a period in the range of 0.17 to 380 hrs.

13. The hydroelectric cell as claimed in claim 11 , wherein said hydroelectric cell generates zinc hydroxides on the zinc electrode and hydrogen gas on the silver comb electrode.

14. The hydroelectric cell as claimed in claim 11 , wherein the lithium substituted magnesium ferrite material has a square dimension 24×24 mm 2 pellet fabricated by an applied pressure of 10 tons.

15. The hydroelectric cell as claimed in claim 11 , wherein the water is deionized or distilled water.

16. The hydroelectric cell as claimed in claim 15 , wherein the water is deionized water.

Assignees

• Council Scient Ind Res

Inventors

• Kotnala Ravinder Kumar
• Shah Jyoti

Classifications

• C25B1/04

  by electrolysis of water · CPC title

• H01M4/42

  Alloys based on zinc · CPC title

• C01G49/0036 Primary

  containing one alkaline earth metal, magnesium or lead · CPC title

• Y02E60/36

  Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title

• H01M2300/0071

  Oxides · CPC title