U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Air battery and electrochemical method

Patent 4172924 Issued on October 30, 1979. Estimated Expiration Date: Icon_subject February 21, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3414437

3493434

3847671

3887400

Inventor

Assignee

Application

No. 05/879228 filed on 02/21/1978

US Classes:

429/15, Active material in electrolyte429/27, Active material electrode-type cell or subcombination thereof429/68Means moves electrode

Examiners

Primary: Walton, Donald L.

Attorney, Agent or Firm

International Class

H01M 8/22 (20060101)

Foreign Application Priority Data

1974-07-19 FR

Abstract

Method and apparatus for electrochemically producing electricity. Ion contivity is established between an oxygen-reducing electrode, and adjacent ion pervious insulating membrane, a paste which has flow characteristics comprising particles of an oxidizable metal and a liquid electrolyte, and an inert electrode in physical contact with said paste. In said paste, the metal particles are in an amount constituting from 60% up to the critical pigment volume composition. The metal paste is moved from a first reservoir through the electrochemical battery wherein it is oxidized to the corresponding metal oxide paste and passed to a second reservoir. The battery may be recharged by reversing the movement and electrolyzing, or by reducing the metal oxide paste in an external circuit.

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