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

Author

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  • Zhiguang Zhu

    (Virginia Tech, 304 Seitz Hall, Blacksburg, Virginia 24061, USA
    Cell Free Bioinnovations Inc., 2200 Kraft Drive, Suite 1200B, Blacksburg, Virginia 24060, USA)

  • Tsz Kin Tam

    (Cell Free Bioinnovations Inc., 2200 Kraft Drive, Suite 1200B, Blacksburg, Virginia 24060, USA)

  • Fangfang Sun

    (Cell Free Bioinnovations Inc., 2200 Kraft Drive, Suite 1200B, Blacksburg, Virginia 24060, USA)

  • Chun You

    (Virginia Tech, 304 Seitz Hall, Blacksburg, Virginia 24061, USA)

  • Y. -H. Percival Zhang

    (Virginia Tech, 304 Seitz Hall, Blacksburg, Virginia 24061, USA
    Cell Free Bioinnovations Inc., 2200 Kraft Drive, Suite 1200B, Blacksburg, Virginia 24060, USA
    Institute for Critical Technology and Applied Science (ICTAS), Virginia Tech)

Abstract

High-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.

Suggested Citation

  • Zhiguang Zhu & Tsz Kin Tam & Fangfang Sun & Chun You & Y. -H. Percival Zhang, 2014. "A high-energy-density sugar biobattery based on a synthetic enzymatic pathway," Nature Communications, Nature, vol. 5(1), pages 1-8, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4026
    DOI: 10.1038/ncomms4026
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    Cited by:

    1. Siraj Sabihuddin & Aristides E. Kiprakis & Markus Mueller, 2014. "A Numerical and Graphical Review of Energy Storage Technologies," Energies, MDPI, vol. 8(1), pages 1-45, December.
    2. Kumar, G. & Bakonyi, P. & Periyasamy, S. & Kim, S.H. & Nemestóthy, N. & Bélafi-Bakó, K., 2015. "Lignocellulose biohydrogen: Practical challenges and recent progress," Renewable and Sustainable Energy Reviews, Elsevier, vol. 44(C), pages 728-737.
    3. John Collins & Ting Zhang & Scott Huston & Fangfang Sun & Y-H Percival Zhang & Jinglin Fu, 2016. "A Hidden Transhydrogen Activity of a FMN-Bound Diaphorase under Anaerobic Conditions," PLOS ONE, Public Library of Science, vol. 11(5), pages 1-9, May.
    4. Bo Liang & Jing Yang & Chen-Fei Meng & Ya-Ru Zhang & Lu Wang & Li Zhang & Jia Liu & Zhen-Chao Li & Serge Cosnier & Ai-Hua Liu & Jian-Ming Yang, 2024. "Efficient conversion of hemicellulose into high-value product and electric power by enzyme-engineered bacterial consortia," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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