High-power biofuel cell textiles from woven biscrolled carbon nanotube yarns

Cheong Hoon Kwon, Sung-Ho Lee, Young-Bong Choi, Jae Ah Lee, Shi Hyeong Kim, Hyug-Han Kim, Geoffrey M. Spinks, Gordon G. Wallace, Márcio D. Lima, Mikhail E. Kozlov, Ray H. Baughman () and Seon Jeong Kim ()
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Cheong Hoon Kwon: Hanyang University
Sung-Ho Lee: Hanyang University
Young-Bong Choi: Dankook University
Jae Ah Lee: Hanyang University
Shi Hyeong Kim: Hanyang University
Hyug-Han Kim: Dankook University
Geoffrey M. Spinks: Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong
Gordon G. Wallace: Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong
Márcio D. Lima: The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas
Mikhail E. Kozlov: The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas
Ray H. Baughman: The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas
Seon Jeong Kim: Hanyang University

Nature Communications, 2014, vol. 5, issue 1, 1-7

Abstract: Abstract Biofuel cells that generate electricity from glucose in blood are promising for powering implantable biomedical devices. Immobilizing interconnected enzyme and redox mediator in a highly conducting, porous electrode maximizes their interaction with the electrolyte and minimizes diffusion distances for fuel and oxidant, thereby enhancing power density. Here we report that our separator-free carbon nanotube yarn biofuel cells provide an open-circuit voltage of 0.70 V, and a maximum areal power density of 2.18 mW cm−2 that is three times higher than for previous carbon nanotube yarn biofuel cells. Biofuel cell operation in human serum provides high areal power output, as well as markedly increased lifetime (83% remained after 24 h), compared with previous unprotected biofuel cells. Our biscrolled yarn biofuel cells are woven into textiles having the mechanical robustness needed for implantation for glucose energy harvesting.

Date: 2014
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DOI: 10.1038/ncomms4928

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