Hydrogen generating cell with cathode
First Claim
1. A storage stable hydrogen generating galvanic cell comprising:
- an anode subassembly comprising a metal anode, electrolyte and cap;
a cathode subassembly comprising a substantially non-porous cathode, separator and can, wherein the cathode is configured for contact with the electrolyte, the cathode being hydrogen permeable and substantially impermeable to O2, CO2 and water to in turn preclude the passage of O2, CO2 and water into and out of the cell, and to facilitate the permeation of hydrogen through at least one aperture of the can; and
a grommet between at least a portion of the anode subassembly and a portion of the cathode subassembly.
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Accused Products
Abstract
A storage stable hydrogen cell comprising an anode cap subassembly, cathode can subassembly, and a grommet is disclosed. For one embodiment the cathode in the cathode can subassembly is configured for contact with the electrolyte. The cathode is hydrogen permeable and substantially impermeable to O2, CO2 and water. In turn, the cathode can preclude the passage of O2, CO2 and water into and out of the cell, and simultaneously can facilitate the permeation of hydrogen through at least one aperture in the cell. In another embodiment, a commercially available Zn-air cell is converted into storage stable H2 cells by sealing a membrane structure around the apertures of the Zn-air cell. Such membrane precludes the passage of O2, CO2 and water into and out of cell but allows the passage of hydrogen generated in the cell through the aperture of the cell and through the membrane.
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Citations
15 Claims
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1. A storage stable hydrogen generating galvanic cell comprising:
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an anode subassembly comprising a metal anode, electrolyte and cap;
a cathode subassembly comprising a substantially non-porous cathode, separator and can, wherein the cathode is configured for contact with the electrolyte, the cathode being hydrogen permeable and substantially impermeable to O2, CO2 and water to in turn preclude the passage of O2, CO2 and water into and out of the cell, and to facilitate the permeation of hydrogen through at least one aperture of the can; and
a grommet between at least a portion of the anode subassembly and a portion of the cathode subassembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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a galvanic electrochemical hydrogen gas generating cell having at least one aperture in cathode subassembly can for releasing gas; and
a membrane associated with the at least one aperture, the membrane being hydrogen permeable and substantially impermeable to O2, CO2 and water, to, in turn, preclude the passage of O2, CO2 and water into and out of the cell, and to facilitate the permeation of hydrogen through the at least one aperture of the can. - View Dependent Claims (11, 12)
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13. A storage stable and efficient hydrogen generating cell comprising:
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a commercially available Zn-air cell or hydrogen generating cell comprising a porous cathode; and
a membrane structure associated with an aperture of the cell, wherein the membrane structure is hydrogen permeable and substantially impermeable to O2, CO2 and water, to, in turn preclude the passage of O2, CO2 and water into and out of the cell, and to facilitate the permeation of hydrogen through the aperture. - View Dependent Claims (14)
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15. A storage-stable hydrogen-generating galvanic cell comprising:
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a cell casing including an anode portion disposed at one end of the casing and at least one aperture disposed at an opposing end of the cell casing;
a cathode structure disposed within the casing adjacent to the aperture in the casing and electrically insulated from the anode portion of the casing, the cathode structure substantially impermeable to O2, CO2 and water and permeable to hydrogen; and
an electrolyte disposed within the casing and between the cathode structure and the anode portion of the casing.
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Specification