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| Contact |
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Fischer Fabian |
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| Title |
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Bio-inspired chemical hydrogen storage and discharge as a source of electrical energy |
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| Author(s) |
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Fischer F., Mermoud S., Diouf G., Bastian Ch. |
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| References |
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J Appl Electrochem, 2012, 42, 419-425 |
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| Url |
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http://dx.doi.org/10.1007/s10800-012-0415-3 |
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| Abstract |
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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 ± 0.06 V; cell potentials increased proportionally in serial double, triple, and quadruple hydrogen storage stacks up to EOCV = 1.98 V; 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. |
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