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Fuel‐Free Bio‐photoelectrochemical Cells Based on a Water/Oxygen Circulation System with a Ni:FeOOH/BiVO4 Photoanode
Angewandte Chemie International Edition ( IF 16.6 ) Pub Date : 2018-01-16 , DOI: 10.1002/anie.201710738
He Zhang 1, 2 , You Yu 1, 3 , Lingling Zhang 1 , Shaojun Dong 1, 2, 3
Affiliation  

A bio‐photoelectrochemical cell (BPEC) based on a fuel‐free self‐circulation water–oxygen–water system was fabricated. It consists of Ni:FeOOH modified n‐type bismuth vanadate (BiVO4) photoanode and laccase catalyzed biocathode. In this BPEC, irradiation of the photoanode generates photocurrent for photo‐oxidation of water to oxygen, which is reduced to water again at the laccase biocathode. Of note, the by‐products of two electrode reactions could continue to be reacted, which means the H2O and O2 molecules are retained in an infinite loop of water–oxygen–water without any sacrificial chemical components. As a result, the assembled fuel‐free BPEC exhibits good performance with an open‐circuit potential of 0.97 V and a maximum power density of 205 μW cm−2 at 0.44 V. This BPEC based on a self‐circulation system offers a fuel‐free model to enhance multiple energy conversion and application in reality.

中文翻译:

基于Ni / FeOOH / BiVO4光电阳极的水/氧循环系统的无燃料生物光电化学电池

制造了基于无燃料自循环水-氧气-水系统的生物光电化学电池(BPEC)。它由Ni:FeOOH修饰的n型钒酸铋(BiVO 4)光阳极和漆酶催化的生物阴极组成。在此BPEC中,光阳极的照射产生光电流,用于水将光氧化为氧气,然后在漆酶生物阴极上再次还原为水。值得注意的是,两个电极反应的副产物可能会继续反应,这意味着H 2 O和O 2分子被保留在无限量的水-氧-水循环中,没有任何牺牲性化学成分。结果,组装的无燃料BPEC表现出良好的性能,开路电势为0.97 V,最大功率密度为205μWcm在0.44 V时为−2。该BPEC基于自循环系统,提供了无燃料模型,可增强实际中的多种能量转换和应用。
更新日期:2018-01-16
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