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Novel alkaline fuel cell

A technology of fuel cells and active materials, applied in the field of fuel cells, can solve the problems of long service cycle and shelf life, reduction of

Inactive Publication Date: 2008-02-06
ENERGY CONVERSION DEVICES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Significantly reduced amount of structural rearrangement during charge / discharge cycles or quiescent periods in between due to orbital overlap and disordered structure of different programs resulting in long cycle and shelf life

Method used

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  • Novel alkaline fuel cell
  • Novel alkaline fuel cell
  • Novel alkaline fuel cell

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[0064]Experiments were performed to demonstrate the fundamental concept of using metal hydride storage materials as anode active materials in alkaline fuel cells. This experiment is not intended to obtain quantitative data but to show that the material behaves as predicted. A simple laboratory-scale setup is used for this purpose. Assemble the fuel cell, using commercially available platinum-based air electrodes and MF139.12 alloy (the atomic percentage of the nominal composition is: 9.0% Ti, 5.0% V, 26.2% Zr, 38.0% Ni, 3.5% Cr, 15.6% Mn, 0.8% Sn, 1.5% Co, and 0.4% Al) pre-etched negative electrode (nickel, metal mesh matrix). The anode and cathode are separated by a separator (non-woven polypropylene matte, the surface is grafted with a hydrophilic material, and the density is 30g / m 2 ) were separated, soaked in KOH electrolyte (30% by weight of KOH, 1.5% by weight of LiOH aqueous solution), and finally put into the test cell.

[0065] The tests were carried out with and w...

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Abstract

A fuel cell which has the ability to start up instantly and can accept recaptured energy such as that of regenerative braking by operating in reverse as an electrolyzer. The instant startup fuel cells have increased efficiency and power availability (higher voltage and current) and a dramatic improvement in operating temperature range of about -20 to 150° C.

Description

technical field [0001] The present invention relates to fuel cells and in particular to Ovonic instant start alkaline fuel cells. The electrodes for this fuel cell application address the major hurdles present in modern fuel cell technology by using materials free of expensive noble metals and operable at ambient temperature. In particular, the instant start fuel cell of the present invention comprises an anode formed of a hydrogen storage material. The hydrogen storage material not only stores hydrogen, but also has excellent catalytic activity for forming atomic hydrogen from molecular hydrogen, and also has excellent catalytic activity for producing water from hydrogen ions and hydroxyl ions. In addition to its outstanding catalytic capabilities, the material also exhibits superior corrosion resistance to the alkaline electrolytes of fuel cells. These features uniquely allow the present fuel cell to be instantly startable, usable over a wide temperature range (-20 to 150°...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M8/00H01M4/58C01B6/24C22C14/00C01B3/00C01B13/02C22C19/00H01M4/88H01M4/90H01M8/02H01M8/04H01M8/06H01M8/08H01M8/18
CPCY02T90/34H01M4/8615H01M8/08H01M8/065H01M2004/8684H01M8/186B60L11/1898B60L2240/36B60L11/1885H01M4/86H01M2004/8689C01B3/0031Y10S420/90B60L7/18Y02E60/528C01B13/02Y02E60/327B60L50/72B60L58/31Y02E60/32Y02E60/50Y02T90/40
Inventor S·R·奥夫辛斯基S·文卡特桑B·阿拉德约夫R·扬T·霍佩尔
Owner ENERGY CONVERSION DEVICES INC
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