High-power biofuel cell textiles from woven biscrolled carbon nanotube yarns
2014-04-21 12:52:55 조회수603
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 & Seon Jeong Kim Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul 133-791, Korea Cheong Hoon Kwon, Sung-Ho Lee, Jae Ah Lee, Shi Hyeong Kim & Seon Jeong Kim Department of Chemistry, Dankook University, Cheonan 330-714, Korea Young-Bong Choi & Hyug-Han Kim Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, New South Wales 2522, Australia Geoffrey M. Spinks & Gordon G. Wallace The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75083, USA Márcio D. Lima, Mikhail E. Kozlov & Ray H. Baughman 원문 링크 :


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.

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