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A high-energy-density sugar biobattery based on a synthetic enzymatic pathway

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dc.contributor.authorZhu, Zhiguangen
dc.contributor.authorTam, Tsz Kinen
dc.contributor.authorSun, Fangfangen
dc.contributor.authorYou, Chunen
dc.contributor.authorZhang, Y. H. Percivalen
dc.contributor.departmentBiological Systems Engineeringen
dc.contributor.departmentInstitute for Critical Technology and Applied Scienceen
dc.date.accessioned2019-02-19T14:53:30Zen
dc.date.available2019-02-19T14:53:30Zen
dc.date.issued2014-01en
dc.description.abstractHigh-energy-density, green, safe batteries are highly desirable for meeting the rapidly growing needs of portable electronics. The incomplete oxidation of sugars mediated by one or a few enzymes in enzymatic fuel cells suffers from low energy densities and slow reaction rates. Here we show that nearly 24 electrons per glucose unit of maltodextrin can be produced through a synthetic catabolic pathway that comprises 13 enzymes in an air-breathing enzymatic fuel cell. This enzymatic fuel cell is based on non-immobilized enzymes that exhibit a maximum power output of 0.8 mW cm(-2) and a maximum current density of 6 mA cm(-2), which are far higher than the values for systems based on immobilized enzymes. Enzymatic fuel cells containing a 15% (wt/v) maltodextrin solution have an energy-storage density of 596 Ah kg(-1), which is one order of magnitude higher than that of lithium-ion batteries. Sugar-powered biobatteries could serve as next-generation green power sources, particularly for portable electronics.en
dc.description.notesWe thank the support from the Biological Systems Engineering Department of Virginia Tech. This material is mainly based on work supported by the National Science Foundation under grant number (IIP-1214895) to P.Z.en
dc.description.sponsorshipNational Science Foundation [IIP-1214895]en
dc.description.sponsorshipBiological Systems Engineering Department of Virginia Techen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1038/ncomms4026en
dc.identifier.issn2041-1723en
dc.identifier.other3026en
dc.identifier.pmid24445859en
dc.identifier.urihttp://hdl.handle.net/10919/87717en
dc.identifier.volume5en
dc.language.isoenen
dc.publisherSpringer Natureen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleA high-energy-density sugar biobattery based on a synthetic enzymatic pathwayen
dc.title.serialNature Communicationsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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