Membrane/Mediator-Free Rechargeable Enzymatic Biofuel Cell Utilizing Graphene/Single-Wall Carbon Nanotube Cogel Electrodes
| العنوان: | Membrane/Mediator-Free Rechargeable Enzymatic Biofuel Cell Utilizing Graphene/Single-Wall Carbon Nanotube Cogel Electrodes |
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| المؤلفون: | Richard R. Koepsel, Yeon Joo Jeong, Alan Campbell, Mohammad Islam, Steven M. Geier, Alan J. Russell |
| المصدر: | ACS Applied Materials & Interfaces. 7:4056-4065 |
| بيانات النشر: | American Chemical Society (ACS), 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Oxidoreductases Acting on CH-CH Group Donors, Materials science, biology, Bioelectric Energy Sources, Nanotubes, Carbon, Graphene, Nanotechnology, Carbon nanotube, law.invention, Electron Transport, Glucose Oxidase, Membrane, Electricity, law, Biofuels, Electrode, biology.protein, Graphite, General Materials Science, Glucose oxidase, Semipermeable membrane, Bilirubin oxidase, Enzymatic biofuel cell, Electrodes |
| الوصف: | Enzymatic biofuel cells (EBFCs) utilize enzymes to convert chemical energy present in renewable biofuels into electrical energy and have shown much promise in the continuous powering of implantable devices. Currently, however, EBFCs are greatly limited in terms of power and operational stability with a majority of reported improvements requiring the inclusion of potentially toxic and unstable electron transfer mediators or multicompartment systems separated by a semipermeable membrane resulting in complicated setups. We report on the development of a simple, membrane/mediator-free EBFC utilizing novel electrodes of graphene and single-wall carbon nanotube cogel. These cogel electrodes had large surface area (∼ 800 m(2) g(-1)) that enabled high enzyme loading, large porosity for unhindered glucose transport and moderate electrical conductivity (∼ 0.2 S cm(-1)) for efficient charge collection. Glucose oxidase and bilirubin oxidase were physically adsorbed onto these electrodes to form anodes and cathodes, respectively, and the EBFC produced power densities up to 0.19 mW cm(-2) that correlated to 0.65 mW mL(-1) or 140 mW g(-1) of GOX with an open circuit voltage of 0.61 V. Further, the electrodes were rejuvenated by a simple wash and reloading procedure. We postulate these porous and ultrahigh surface area electrodes will be useful for biosensing applications, and will allow reuse of EBFCs. |
| تدمد: | 1944-8252 1944-8244 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4ef4f52de0ed8621d749058eb0dac2eTest https://doi.org/10.1021/am507801xTest |
| رقم الانضمام: | edsair.doi.dedup.....a4ef4f52de0ed8621d749058eb0dac2e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19448252 19448244 |
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