Wearable high-powered biofuel cells using enzyme/carbon nanotube composite fibers on textile cloth.
Biosens Bioelectron
; 141: 111471, 2019 Sep 15.
Article
in En
| MEDLINE
| ID: mdl-31252257
ABSTRACT
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⯵W/cm2 at 0.24â¯V from 0.1â¯mM glucose (human sweat amount), and of 216⯵W/cm2 at 0.36â¯V, when glucose was supplied from a hydrogel tank containing 200â¯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 1.9â¯V that illuminated an LED on the cloth.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Bioelectric Energy Sources
/
Nanotubes, Carbon
/
Cotton Fiber
/
Wearable Electronic Devices
Limits:
Humans
Language:
En
Journal:
Biosens Bioelectron
Journal subject:
BIOTECNOLOGIA
Year:
2019
Document type:
Article
Affiliation country:
Japón