title: High-power biofuel cell textiles from woven biscrolled carbon nanotube yarns.
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.
authors.affiliation: 1] Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul 133-791, Korea [2].
authors.forename: Cheong Hoon
authors.initials: CH
authors.lastname: Kwon
authors.affiliation: 1] Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul 133-791, Korea [2].
authors.forename: Sung-Ho
authors.initials: SH
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Dankook University, Cheonan 330-714, Korea.
authors.forename: Young-Bong
authors.initials: YB
authors.lastname: Choi
authors.affiliation: Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul 133-791, Korea.
authors.forename: Jae Ah
authors.initials: JA
authors.lastname: Lee
authors.affiliation: Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul 133-791, Korea.
authors.forename: Shi Hyeong
authors.initials: SH
authors.lastname: Kim
authors.affiliation: Department of Chemistry, Dankook University, Cheonan 330-714, Korea.
authors.forename: Hyug-Han
authors.initials: HH
authors.lastname: Kim
authors.affiliation: Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, New South Wales 2522, Australia.
authors.forename: Geoffrey M
authors.initials: GM
authors.lastname: Spinks
authors.affiliation: Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, New South Wales 2522, Australia.
authors.forename: Gordon G
authors.initials: GG
authors.lastname: Wallace
authors.affiliation: The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75083, USA.
authors.forename: Márcio D
authors.initials: MD
authors.lastname: Lima
authors.affiliation: The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75083, USA.
authors.forename: Mikhail E
authors.initials: ME
authors.lastname: Kozlov
authors.affiliation: The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75083, USA.
authors.forename: Ray H
authors.initials: RH
authors.lastname: Baughman
authors.affiliation: Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul 133-791, Korea.
authors.forename: Seon Jeong
authors.initials: SJ
authors.lastname: Kim
mesh_terms: D001674:Bioelectric Energy Sources; D001786:Blood Glucose; D004599:Electric Stimulation Therapy / Q000295:instrumentation; D004867:Equipment Design; D006801:Humans; D015918:Infusion Pumps, Implantable; D037742:Nanotubes, Carbon; D010084:Oxidation-Reduction; D013784:Textiles
chemical_list: D001786:Blood Glucose; D037742:Nanotubes, Carbon