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Bio-inspired chemical hydrogen storage and discharge as a source of electrical energy

Fischer, Fabian ; Mermoud, Sophie ; Diouf, Gnagna ; Bastian, Christèle

In: Journal of Applied Electrochemistry, 2012, vol. 42, no. 6, p. 419-425

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    Titre
    • Bio-inspired chemical hydrogen storage and discharge as a source of electrical energy
    Auteur
    • Fischer, Fabian. Institute of Life Technologies, HES-SO Valais, University of Applied Sciences Western Switzerland, Route du Rawyl 64, 1950, Sion, Switzerland
    • Mermoud, Sophie. Institute of Life Technologies, HES-SO Valais, University of Applied Sciences Western Switzerland, Route du Rawyl 64, 1950, Sion, Switzerland
    • Diouf, Gnagna. Institute of Life Technologies, HES-SO Valais, University of Applied Sciences Western Switzerland, Route du Rawyl 64, 1950, Sion, Switzerland
    • Bastian, Christèle. Institute of Life Technologies, HES-SO Valais, University of Applied Sciences Western Switzerland, Route du Rawyl 64, 1950, Sion, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Journal of Applied Electrochemistry, 2012, vol. 42, no. 6, p. 419-425. Springer Netherlands
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:318891
    Summary
    Reversible bio-inspired chemical hydrogen storage systems accumulate electrical energy in the form of electrons and proton ions located on biomolecules or bio-like storage molecules. Electro-active biomolecules (EAB) in Yeast media show such behavior: 2e−+2H++EAB (aq) + ⇆EABH/H (aq) + , also electro-active Methylene Blue (MB): 2e−+2H++MB (aq) + ⇆MBH/H (aq) + . The power characteristics of microbial fuel cell stacks equipped with such bio-inspired hydrogen storage systems were examined. E. coli cultures charged these bio-inspired separate chemical hydrogen storage units up to E=0.50±0.06V; cell potentials increased proportionally in serial double, triple, and quadruple hydrogen storage stacks up to E OCV=1.98V; the maximum power densities that were obtained improved proportionally with stack length by an increment of 1.4. The bio-inspired chemical hydrogen storage principle is of great interest for application in low-cost batteries that store renewable energy