LIQUID LOW-SODIUM SILICATE ELECTROLYTE USED FOR A STORAGE BATTERY AND MANUFACTURED BY MAGNETIZATION PROCESS, AND THE USAGE THEREOF

• US 20080044726A1
• Filed: 10/22/2007
• Published: 02/21/2008
• Est. Priority Date: 06/12/2001
• Status: Active Grant

• Current Assignee: Lidu Wang
• Original Assignee: Lidu Wang
• Inventors: Han, Dian, Feng, Yuesheng, Feng, Yifeng
• Granted Patent: US 7,642,010 B2
• Time in Patent Office: Days
• US Class Current: 429/188
• CPC Class Codes: H01M 10/08 Selection of materials as electrolytes
• CPC Class Codes: H01M 10/10 Immobilising of electrolyte
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/49108 Electric battery cell making

Abstract

A liquid low concentration sodium-containing silicate solution as electrolyte for lead-acid storage batteries and its applications, is prepared by mixing a silica gel containing 40˜60 wt % SiO₂, the weight units of such a silica gel are 5˜15; add 15-25 weight units water and stir until the concentration of the mixture is 0.65˜0.85 ⁰Be′ measured by a Baum densimeter, adjusting the pH value of this mixture to 1-4 using inorganic acid and magnetizing the mixture under 1000-6000 Gauss magnetic field for 5-10 minutes, stir the magnetized mixture until the viscosity of the mixture is less than 0.02 poise and finally obtain a liquid low concentration sodium-containing silicate solution. The electrolyte can be used as electrolyte or activation solution for common or special lead-acid storage batteries.

Claims

1. A method of making a magnetically treated low concentration sodium-containing silicate solution for a lead-acid storage battery, comprising:

1) preparing 5˜

15 weight units of a silica gel containing 40˜

60 wt % SiO₂;

2) adding 15˜

25 weight units of water to the silica gel and stirring the mixture at the same time, until the concentration is 0.65˜

0.85 ⁰Be′

measured using a Baume′

densimeter;

3) adding inorganic acid to the solution of step

     2) until a pH value is 1-4 to obtain a silicate mixture;

     4) exposing the silicate mixture obtained in step

     3) to a magnetic field of 1000-6000 Gauss for 5-10 minutes to obtain a magnetized mixture; and

     5) stirring the magnetized mixture obtained in step

     4) until the viscosity of the magnetized mixture is less than 0.02 poise.

2. A method as set forth in claim 1, wherein the water is deionized water or distilled water.

3. A method as set forth in claim 1, wherein the inorganic acid is one of hydrochloric acid, oxalic acid, sulfuric acid.

4. A method as set forth in claim 1, wherein the stirring speed is 700˜

1400 r/m, and wherein the stirring is continued for 5˜

10 minutes.

5. A method as set forth in claim 1, wherein the magnetic field is generated using a round tube of NdFeB with a 1000-6000 Gauss magnetic intensity.

6. An activation solution for a lead-acid storage battery prepared using the method of claim 1.

7. An electroyte solution for a lead-acid storage battery prepared using the method of claim