期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 2, 期 12, 页码 1280-1285出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b912915d
关键词
-
资金
- Japan Society for the Promotion of Science (Research Fellowship for Young Scientists)
- Japan Society for the Promotion of Science [21225007, 21605004]
We examined the direct electron transfer (DET) reaction of bilirubin oxidase (BOD) at three-dimensional gold nanoparticle (AuNP) electrodes in DET-type biofuel cells. The BOD-modified AuNP electrode, which does not have a thiol self-assembled monolayer, provided a current density as high as 5.2 mA cm(-2) at a 4 000 rpm electrode rotation rate. A remarkable improvement in the stability of catalytic currents was also achieved by utilizing AuNP electrodes. Current densities retained about 90% of their initial value after 48 h of continuous measurement. Moreover, we constructed a mediator-free and compartmentless fructose/O-2 biofuel cell based on DET-type bioelectrocatalysis via the BOD-cathode and the fructose dehydrogenase (FDH)-anode at pH 6.0. When carbon paper was used as the substrate upon which the electrode of the biofuel cell was constructed, the maximum current density of 2.6 mA cm(-2) and the maximum power density of 0.66 mW cm(-2) were achieved at 360 mV of the cell voltage in quiescent solution. Under stirring, a maximum current density of 4.9 mA cm(-2) and a maximum power density of 0.87 mW cm(-2) at an operating voltage of 300 mV were achieved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据