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首页> 美国卫生研究院文献>Scientific Reports >Fabrication of Mediatorless/Membraneless Glucose/Oxygen Based Biofuel Cell using Biocatalysts Including Glucose Oxidase and Laccase Enzymes
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Fabrication of Mediatorless/Membraneless Glucose/Oxygen Based Biofuel Cell using Biocatalysts Including Glucose Oxidase and Laccase Enzymes

机译：使用包括葡萄糖氧化酶和漆酶的生物催化剂制备无介体/无膜葡萄糖/氧气基生物燃料电池

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Mediatorless and membraneless enzymatic biofuel cells (EBCs) employing new catalytic structure are fabricated. Regarding anodic catalyst, structure consisting of glucose oxidase (GOx), poly(ethylenimine) (PEI) and carbon nanotube (CNT) is considered, while three cathodic catalysts consist of glutaraldehyde (GA), laccase (Lac), PEI and CNT that are stacked together in different ways. Catalytic activities of the catalysts for glucose oxidation and oxygen reduction reactions (GOR and ORR) are evaluated. As a result, it is confirmed that the catalysts work well for promotion of GOR and ORR. In EBC tests, performances of EBCs including 150 μm-thick membrane are measured as references, while those of membraneless EBCs are measured depending on parameters like glucose flow rate, glucose concentration, distance between two electrodes and electrolyte pH. With the measurements, how the parameters affect EBC performance and their optimal conditions are determined. Based on that, best maximum power density (MPD) of membraneless EBC is 102 ± 5.1 μW · cm−2 with values of 0.5 cc · min−1 (glucose flow rate), 40 mM (glucose concentration), 1 mm (distance between electrodes) and pH 3. When membrane and membraneless EBCs are compared, MPD of the membraneless EBC that is run at the similar operating condition to EBC including membrane is speculated as about 134 μW · cm−2.
机译：制作了采用新催化结构的无介体和无膜酶生物燃料电池（EBC）。关于阳极催化剂，考虑由葡萄糖氧化酶（GOx），聚乙烯亚胺（PEI）和碳纳米管（CNT）组成的结构，而三种阴极催化剂由戊二醛（GA），漆酶（Lac），PEI和CNT组成。以不同的方式堆叠在一起。评估了催化剂对葡萄糖氧化和氧还原反应（GOR和ORR）的催化活性。结果，证实了催化剂对于促进GOR和ORR效果良好。在EBC测试中，以包括150μm厚膜的EBC的性能为参考，而无膜EBC的性能则根据葡萄糖流速，葡萄糖浓度，两个电极之间的距离和电解质pH等参数进行测量。通过测量，可以确定参数如何影响EBC性能及其最佳条件。基于此，无膜EBC的最佳最大功率密度（MPD）为102±5.1 W·cm −2 ，值为0.5 cc·min -1 （葡萄糖流量），40μmM（葡萄糖浓度），1μmm（电极之间的距离）和pH3。当比较膜和无膜EBC时，推测在与包括膜在内的EBC类似的操作条件下运行的无膜EBC的MPD约为134。 μW·cm -2 。

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