Cell reaction barrier
AssigneeP. R. Mallory & Co. Inc.
InventorJoseph N. Barrella
Life of this patent
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Abstract
Fragmentation with electrical discontinuity in a consumable electrode of an electrochemical cell is minimized by preventing a portion of said electrode from reacting by means of a reaction barrier.
Claims25
An electrochemical cell comprising a consumable electrode, a terminal for said electrode, said terminal and said consumable electrode being discrete elements, and an electrode of opposite polarity, said consumable electrode being connected to said terminal, said cell further comprising means to prevent electrical disengagement from said terminal of remote portions of said consumable electrode, wherein said means to prevent electrical disengagement retards reaction of a continuous portion of said consumable electrode from adjacent said terminal to a locus adjacent said remote portions, whereby said remote portions of said consumable electrode remain electrically connected to said terminal throughout discharge of said cell so that electrical continuity between said consumable electrode and said terminal is maintained.
An electrochemical cell comprising a consumable electrode, a terminal connection for said electrode, and an electrode of opposite polarity, wherein said consumable electrode is electrically engaged with said terminal connection, and further comprising means for retarding reaction of a portion of said consumable electrode, said portion being electrically connected throughout discharge of said cell to said terminal connection whereby electrical continuity between said consumable electrode and said terminal connection is maintained, wherein said means for retarding reaction comprises electrical insulation between a section of said electrode of opposite polarity, and the current collector thereof.
An electrochemical cell comprising a consumable electrode, a terminal connection for said electrode, and an electrode of opposite polarity, wherein said consumable electrode is electrically engaged with said terminal connection, and further comprising means for retarding reaction of a portion of said consumable electrode, said portion being electrically connected throughout discharge of said cell to said terminal connection whereby electrical continuity between said consumable electrode and said terminal connection is maintained, wherein said means for retarding reaction comprises a section of said electrode of opposite polarity having reduced electronic conductivity.
An electrochemical cell comprising a consumable electrode, a terminal connection for said electrode, and an electrode of opposite polarity, wherein said consumable electrode is electrically engaged with said terminal connection, and further comprising means for retarding reaction of a portion of said consumable electrode, said portion being electrically connected throughout discharge of said cell to said terminal connection whereby electrical continuity between said consumable electrode and said terminal connection is maintained, wherein said means for retarding reaction comprises an ionic flow barrier disposed within said consumable electrode.
An electrochemical cell comprising an elongated consumable metal anode, a terminal for said anode connected thereto at an end thereof, an elongated cathode and at least one elongated separator between said anode and cathode characterized in that means to prevent electrical disengagement from said terminal of remote portions of said elongated anode is positioned between opposing surfaces of said anode and cathode along substantially the entire length of the longitudinal axis of said anode and cathode and wherein said means comprises an ionic flow impeding barrier with a section thereof adjacent the end of said anode connected to said terminal.
Dependencies are inferred from the claim text.