2021年5月
Fiber-crafted biofuel cell bracelet for wearable electronics
Biosensors and Bioelectronics
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- 巻
- 179
- 号
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.bios.2021.113107
- 出版者・発行元
- ELSEVIER ADVANCED TECHNOLOGY
Wearable devices that generate power using sweat have garnered much attention in the field of skin electronics. These devices require high performance with a small volume and low production rate of sweat by living or-ganisms. Here we demonstrate a high-power biofuel cell bracelet based on the lactate in human sweat. The biofuel cell was developed by using a lactate oxidase/osmium-based mediator/carbon nanotube fiber for lactate oxidation and a bilirubin oxidase/carbon nanotube fiber for oxygen reduction; the fibers were woven into a hydrophilic supportive textile for sweat storage. The storage textile was sandwiched between a hydrophobic textile for sweat absorption from the skin and a hydrophilic textile for water evaporation to improve sweat collection. The performance of the layered cell was 74 ?W at 0.39 V in 20 mM artificial sweat lactate, and its performance was maintained at over 80% for 12 h. Furthermore, we demonstrated a series-connection between anode/cathode fibers by tying them up to wrap the bracelet-type biofuel cell on the wrist. The booster six-cell bracelet generated power at 2.0 V that is sufficient for operating digital wrist watches.
- リンク情報
- ID情報
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- DOI : 10.1016/j.bios.2021.113107
- ISSN : 0956-5663
- eISSN : 1873-4235
- ORCIDのPut Code : 89196703
- Web of Science ID : WOS:000627345200001