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Fused hydride fuel cell

A fuel cell and fuel gas technology, applied in the direction of molten electrolyte fuel cells, fuel cells, fuel cell grouping, etc., can solve problems such as limiting the reliability of solid oxide fuel cells

Inactive Publication Date: 2004-05-12
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of brittle ceramic electrolytes, the need for high-temperature-resistant structural materials, and the need for additional cooling systems limit the reliability of solid oxide fuel cells

Method used

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  • Fused hydride fuel cell
  • Fused hydride fuel cell
  • Fused hydride fuel cell

Examples

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Embodiment Construction

[0013] refer to figure 1 , one embodiment of the invention is a fuel cell assembly, which is an array or stack comprising at least one fuel cell 10 . The fuel cell 10 according to this embodiment includes an anode 15 and a cathode 16 disposed in spaced apart relationship by at least one spacer element 22 . The spacer element 22 according to this embodiment comprises an electrically insulating material such as aluminum oxide, zirconium oxide, boron nitride, silicon nitride, aluminum nitride and silicate glass, but is not limited thereto. Spacer element 22 also includes a proximal end in contact with cathode 16 and a distal end in contact with anode 15 .

[0014] In one embodiment, at least one of the anode 15 and the cathode 16 comprises a hydrogen permeable solid film. The hydrogen absorbing properties of these materials allow rapid diffusion of the fuel gas provided, for example, by the fuel gas inlet 18 . In particular embodiments, the thin film includes at least one mate...

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Abstract

A fuel cell assembly comprises at least one fuel cell (10). The fuel cell (10) comprises an anode (15) and a cathode (16) held in a spaced apart relationship by at least one spacer element (22) comprising an electrically insulating material. A proximal end of the spacer element (22) is in contact with the cathode (16), and a distal end is in contact with the anode (15). An electrolyte (17) is disposed between, and in contact with the anode (15) and the cathode (16). The electrolyte (17) comprises a molten salt having a hydride ion conductance number greater than about 0.95 at a fuel cell operating temperature. A fuel gas inlet (18), adjacent to the cathode (16), is provided for delivering a fuel gas to the electrolyte. An oxidizing gas inlet (19), adjacent to the anode (15), is provided for delivering an oxidizing gas to the electrolyte (17). An exhaust port (20) is in fluid communication with the anode (15). Hydrogen gas is reduced to hydride at the cathode, is transported through the electrolyte is oxidized at the anode and reacts with oxygen to form water.

Description

technical field [0001] The present invention relates generally to the field of fuel cells, and more particularly to fuel cells containing liquid electrolytes. Background technique [0002] Various types of fuel cells are known in the art, which are devices that convert energy from chemical reactions into electrical energy. Each type of fuel cell has one or more limitations that render the fuel cell useful only for specialized applications. For example, thermally regenerative liquid fuel cells induce hydrogen flow by thermal decomposition of lithium hydride and sodium hydride mixtures at elevated temperatures (eg, about 800°C to about 1300°C) maintained by a separate heating device to generate hydrogen. Hydrogen is then passed through the cell at high pressure (10 atmospheres or more), causing the migration of hydride ions, which release electrons at the electrodes to generate electricity. Only a small portion of heat energy is converted to electricity. The need for high t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/94H01M8/02H01M8/14H01M8/24
CPCH01M8/244H01M4/8621H01M4/8647H01M8/144H01M8/0297H01M4/94Y02E60/526Y02E60/50H01M8/04H01M8/14H01M8/0258H01M8/2457H01M8/2484
Inventor P·罗伊S·A·萨拉马D·N·罗杰斯
Owner GENERAL ELECTRIC CO