Sheet-shaped biofuel cell constructed from enzyme-modified nanoengineered carbon fabric
Sheet-shaped biofuel cell constructed from enzyme-modified nanoengineered carbon fabric
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DOI：
10.1016/j.electacta.2012.01.112
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发表时间：
2012-11-01
影响因子：
6.6
通讯作者：
Nishizawa, Matsuhiko
中科院分区：
文献类型：
--
作者：
Haneda, Keigo;Yoshino, Syuhei;Nishizawa, Matsuhiko
用多壁碳纳米管和果糖脱氢酶（FDH）修饰的碳纤维（CF）电极条在搅拌的200 mM果糖溶液中显示出类似于11 mA cm(-2)的氧化电流密度。人们发现，在改性过程中获得足够的纳米管分散对于确保 FDH 阳极的这种性能至关重要。为了与该阳极一起使用，用科琴黑（KB）和胆红素氧化酶（BOD）修饰的CF条作为气体扩散阴极，在类似于2 mA cm（-2）的电流密度下从空气中还原O-2。FDH修饰的CF条和BOD修饰的CF条与保留电解质溶液和燃料（果糖）的琼脂糖膜堆叠，以构建完全柔性的片状生物燃料电池。该组件允许弯曲 44 度，而不影响最大输出功率密度，即 0.4 V 下获得的 550 mu W cm(-2)。 (C) 2012 年由 Elsevier Ltd 出版。
A strip of carbon fabric (CF) electrode modified with multiwalled carbon nanotubes and subsequently fructose dehydrogenase (FDH) showed an oxidation current density of similar to 11 mA cm(-2) in stirred 200 mM fructose solution. Obtaining a sufficient dispersion of the nanotubes during its modification was found to be critical to ensure such a performance of the FDH anode. For use with this anode, a CF strip modified with ketjenblack (KB) and bilirubin oxidase (BOD) served as a gas-diffusion cathode for the reduction of O-2 from air at a current density of similar to 2 mA cm(-2.) The FDH-modified CF strip and the BOD-modified CF strip were stacked with an agarose film that retained an electrolyte solution and fuel (fructose) to construct a totally flexible sheet-shaped biofuel cell. This assembly allowed bending of 44 degrees without affecting the maximum output power density, 550 mu W cm(-2) obtained at 0.4 V. (C) 2012 Published by Elsevier Ltd.