Fuel cell vehicles have a high potential to reduce both energy consumption and carbon dioxide emissions. However, due to the low density, hydrogen gas limits the amount of hydrogen stored on board. This restriction also prevents wide penetration of fuel cells. Hydrogen storage is the key technology towards the hydrogen society. Currently high-pressure tanks and liquid hydrogen tanks are used for road tests, but both technologies do not meet all the requirements of future fuel cell vehicles. This paper briefly explains the current status of conventional technologies (simple containment) such as high-pressure tank systems and cryogenic storage. Another method, hydrogen-absorbing alloy has been long investigated but it has several difficulties for the vehicle applications such as low temperature discharge characteristics and quick charge capability due to its reaction heat. The authors tested a new idea of combining metal hydride and high pressure. It will solve some difficulties and improve performance such as gravimetric density. This paper describes the latest material and system development.


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    Title :

    Recent challenges of hydrogen storage technologies for fuel cell vehicles


    Additional title:

    Neue Herausforderungen an die Wasserstoffspeichertechnologien für Brennstoffzellenfahrzeuge


    Contributors:
    Mori, D. (author) / Hirose, K. (author)


    Publication date :

    2009


    Size :

    6 Seiten, 10 Bilder, 1 Tabelle, 18 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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