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Lead-zinc battery

a zinc battery and lead-zinc technology, applied in the direction of secondary cells servicing/maintenance, cell components, electrochemical generators, etc., can solve the problems of limited energy density, limited cycle life, and extremely corrosive electrolyte, so as to improve electrical conductivity, prevent short circuit, and maximize electrode surface area

Inactive Publication Date: 2013-09-26
STAUFFER JOHN E
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a design with electrodes that can be flat sheets, fibers, or particles, which maximizes surface area. The electrodes can also be made conductive by adding carbon particles. A coating of gel can be applied to hold the electrolyte in place. A separator can be added between positive and negative electrodes to prevent short circuits. Overall, the design provides a more efficient and effective way to work with electrical currents.

Problems solved by technology

Nevertheless, it has limited energy density and the electrolyte is extremely corrosive.
Maintenance-free types avoid the loss of evolved gases, as disclosed in U.S. Pat. No. 3,862,861, but their cycle-life is still restricted.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0024](1) A glass jar 4.5 in. high was used for the cell. A plastic divider kept the electrodes apart. The positive electrode was a strip of lead 1.5 in. wide by 5 in. high. The negative electrode was a sheet of zinc 1.75 in. wide by 3.5 in. long, which had been recovered from a dry cell. The electrolyte was prepared by dissolving 48.1 gm. of sodium bisulfate monohydrate, reagent grade in 200 ml. water. After charging the cell for 8 minutes at 3.0 volts, an open circuit potential of 2.65 volts was observed. The cell was discharged, producing a current of 100 milliamps through a flashlight bulb. After repeated cycling, the electrodes showed no corrosion.

[0025](2) The same cell as used in example (1) was employed except the negative electrode comprised a rod of zinc 99.9999 percent (metals basic) pure. The electrolyte was formulated by dissolving 33.0 gm. of potassium bisulfate, 97% in 200 ml. of water. After charging the cell for 11 minutes at 3.0 volts, an open circuit potential of ...

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Abstract

A rechargeable battery is provided such that the positive electrode comprises lead, the negative electrode zinc, and the electrolyte is an aqueous solution of an alkali metal bisulfate. Upon discharge, lead dioxide is reduced to lead sulfate, zinc is oxidized to zinc oxide, and the electrolyte is converted to an alkali metal hydroxide. The reactions are reversed when the battery is charged.

Description

RELATED APPLICATIONS[0001]This application is a continuation-in-part of U.S. application Ser. No. 13 / 649,602 filed on Oct. 11, 2012, which is a continuation-in-part of U.S. application Ser. No. 12 / 608,201 filed on Oct. 29, 2009 currently pending, which is a continuation-in-part of U.S. application Ser. No. 11 / 249,223 filed on Oct. 13, 2005 and abandoned, which in turn is a continuation of U.S. application Ser. No. 10 / 756,015 filed on Jan. 13, 2004 and abandoned. In addition, this application is a continuation-in-part of U.S. patent application Ser. No. 11 / 167,535 filed on Jun. 27, 2005, now U.S. Pat. No. 7,947,391, which is a continuation-in-part of U.S. patent application Ser. No. 10 / 756,015 filed on Jan. 13, 2004 and abandoned.FIELD OF THE INVENTION[0002]The present invention relates to a novel type of storage battery which is distinguished by its unique electrochemistry. The positive electrode comprises, in the charged state, lead dioxide and the negative electrode highly pure zi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01M10/22
CPCH01M10/44H01M10/22H01M4/38H01M10/36H01M2300/0002Y02E60/50Y02E60/10H01M10/26H01M10/06H01M8/186H01M4/244
Inventor STAUFFER, JOHN E.
Owner STAUFFER JOHN E
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