Wearable high-powered biofuel cells using enzyme/carbon nanotube composite fibers on textile cloth
Wearable biofuel cells with flexible enzyme/carbon nanotube (CNT) fibers were designed on a cotton textile cloth by integrating two components: bioanode fibers for glucose oxidation and O2-diffusion biocathode fibers for oxygen reduction. The anode and cathode fibers were prepared through modificati...
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Published in | Biosensors & bioelectronics Vol. 141; p. 111471 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
England
Elsevier B.V
15.09.2019
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Subjects | |
Online Access | Get full text |
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Summary: | Wearable biofuel cells with flexible enzyme/carbon nanotube (CNT) fibers were designed on a cotton textile cloth by integrating two components: bioanode fibers for glucose oxidation and O2-diffusion biocathode fibers for oxygen reduction. The anode and cathode fibers were prepared through modification with glucose dehydrogenase and bilirubin oxidase, respectively, on multi-walled carbon nanotube-coated carbon fibers. Both biofibers woven on the cloth generated a power density of 48 μW/cm2 at 0.24 V from 0.1 mM glucose (human sweat amount), and of 216 μW/cm2 at 0.36 V, when glucose was supplied from a hydrogel tank containing 200 mM glucose. Our fiber-based biofuel cell deformed to an S-shape without a significant loss in cell performance. Furthermore, we demonstrated a series-connection involving the tying of biofibers on a cloth with batik-based ionic isolation. The booster four cells generate power at 1.9 V that illuminated an LED on the cloth.
•Wearable biofuel cell was developed with flexible enzyme/CNT fibers woven on cotton textile cloth.•The bioanode for glucose oxidation and oxygen-diffusion biocathode fibers are prepared through modification with glucose dehydrogenase and bilirubin oxidase, respectively, on CNT decorated carbon fibers.•Both biofibers are woven on the cloth and generate a power density of 48 μW/cm2 at 0.24 V from artificial sweat glucose (0.1 mM) and of 216 μW/cm2 at 0.36 V, when glucose is supplied from a hydrogel tank containing 200 mM glucose.•Our fiber-based biofuel cell functions well even when deformed to the S-shape without significant loss of cell performance.•A series connection of tying biofibers on cloth with batik-based ionic isolation was demonstrated for illuminating a LED. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0956-5663 1873-4235 |
DOI: | 10.1016/j.bios.2019.111471 |