A Tandem Solar Biofuel Cell: Harnessing Energy from Light and Biofuels,Angewandte Chemie International Edition

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A Tandem Solar Biofuel Cell: Harnessing Energy from Light and Biofuels
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-10-02 , DOI: 10.1002/anie.202012089
Marc Riedel ₁ , Soraya Höfs ₂ , Adrian Ruff ₃ , Wolfgang Schuhmann ₄ , Fred Lisdat ₅

Affiliation

We report on a photobioelectrochemical fuel cell consisting of a glucose‐oxidase‐modified BiFeO₃ photobiocathode and a quantum‐dot‐sensitized inverse opal TiO₂ photobioanode linked to FAD glucose dehydrogenase via a redox polymer. Both photobioelectrodes are driven by enzymatic glucose conversion. Whereas the photobioanode can collect electrons from sugar oxidation at rather low potential, the photobiocathode shows reduction currents at rather high potential. The electrodes can be arranged in a sandwich‐like manner due to the semi‐transparent nature of BiFeO₃, which also guarantees a simultaneous excitation of the photobioanode when illuminated via the cathode side. This tandem cell can generate electricity under illumination and in the presence of glucose and provides an exceptionally high OCV of about 1 V. The developed semi‐artificial system has significant implications for the integration of biocatalysts in photoactive entities for bioenergetic purposes, and it opens up a new path toward generation of electricity from sunlight and (bio)fuels.

中文翻译：

串联式太阳能生物燃料电池：利用光能和生物燃料的能量

我们报道了一种光生化燃料电池，该燃料电池由葡萄糖氧化酶修饰的BiFeO ₃光生物阴极和量子点敏感的反蛋白石TiO ₂光电阳极通过氧化还原聚合物与FAD葡萄糖脱氢酶连接而成。两种光生物电极均由酶促葡萄糖转化驱动。尽管光生物阳极可以在相当低的电位下从糖氧化中收集电子，但是光生物阴极在相当高的电位下显示出还原电流。由于BiFeO ₃的半透明特性，可以将电极排列成三明治状当通过阴极侧照射时，这也保证了光生物阳极的同时激发。该串联电池可以在光照下和存在葡萄糖的情况下发电，并提供约1 V的超高OCV。发达的半人工系统对生物催化剂在生物活性目的的光敏实体中整合生物催化剂具有重要意义。通过阳光和（生物）燃料发电的新途径。

更新日期：2020-10-02

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