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Method of recycling lead-acid storage battery

  • US 6,730,428 B1
  • Filed: 12/27/2001
  • Issued: 05/04/2004
  • Est. Priority Date: 07/24/1998
  • Status: Expired due to Fees
First Claim
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1. A method of recycling a lead-acid storage battery, to recover a capacity of said battery which has been reduced due to deposition of a lead sulfate on a surface of an electrode of said battery, said method comprising:

  • a first step of causing a pulsating direct current to flow from a positive electrode toward a negative electrode of said battery, for thereby reducing the lead sulfate deposited on the surface of said electrode; and

    a second step of activating said positive electrode through an electrochemical doping in which a direct current voltage is applied to said battery with a carbon suspension being used as a battery electrolyte of said battery, said carbon suspension being obtained by electrolytic oxidation of a carbon positive electrode in a water system.

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