A High-Power Glucose/Oxygen Biofuel Cell Operating under Quiescent Conditions

We have developed the passive-type biofuel cell, in which two-electron oxidation of glucose and four-electron reduction of O2 occur at pH 7 in mediated bioelectrochemical processes, having the maximum power density of 5.0 mW/cm2 at 500 mV. This performance has been achieved by using a new electrolyt...

Full description

Saved in:
Bibliographic Details
Published in:ECS transactions 2009-03, Vol.16 (38), p.9-15
Main Authors: Sakai, Hideki, Nakagawa, Takaaki, Mita, Hiroki, Matsumoto, Ryuhei, Sugiyama, Taiki, Kumita, Hideyuki, Tokita, Yuichi, Hatazawa, Tsuyonobu
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have developed the passive-type biofuel cell, in which two-electron oxidation of glucose and four-electron reduction of O2 occur at pH 7 in mediated bioelectrochemical processes, having the maximum power density of 5.0 mW/cm2 at 500 mV. This performance has been achieved by using a new electrolyte solution (Imidazole/HCl buffer, 2 M, pH 7), instead of the general solution (Sodium phosphate buffer, 1 M, pH 7); the maximum power density was a 3.0 mW/cm2 at the same conditions. By introducing the new electrolyte solution into our biofuel cell, we have succeeded in enhancing the catalytic current because the proton transfer into electrodes would increase compared with the phosphate buffer system.
ISSN:1938-5862
1938-6737
DOI:10.1149/1.3103805