Photo-bioelectrochemical cell anodes enhanced with titanium oxide, carbon nanotubes and chlorophyll-based catalyst on different supporting materials

Journal of Electrochemical Science and Engineering Pub Date : 2023-12-11 DOI:10.5599/jese.2008

M. Christwardana, A. A. Septevani, D. Dayanti

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Abstract

An important part of a photo-bioelectrochemical cell (PBEC) is the photo-biocatalyst substrate taken as anode. This study aims to explain the effect of CNT/TiO2/chlorophyll photocatalyst coated on the cellulose nanopaper (CNP) substrate on the PBEC performance and to compare the results with those obtained for the commercial indium tin oxide (ITO) glass and flexible ITO as substrates. The results showed high sheet resistance of CNP, which is 61182 Ω sq-1, which is reduced by 80 % in the presence of CNT/TiO2/Chl biocatalyst. The highest output voltage of 0.95 to 1 V was produced by coating CNT/TiO2/Chl on the flexible ITO. The maximum current density (Jmax) of 3726 mA m-2 and the highest maximum power density value of around 574 mW m-2 were obtained for illuminated CNT/TiO2/Chl on the rigid ITO anode. In dark conditions, the highest power density was observed for CNP as the supporting substrate. The photo-bioelectrochemical cell adopting CNT/TiO2/Chl and CNP as the supporting substrate material has great potential for a variety of applications, such as wearable electronics, environmental monitoring, remote or off-grid energy supply, and renewable energy systems, thereby contributing to the advancement of sustainable energy technologies.

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在不同支撑材料上使用氧化钛、碳纳米管和叶绿素催化剂增强光生物电化学电池阳极

光生物电化学电池（PBEC）的一个重要组成部分是作为阳极的光生物催化剂基底。本研究旨在解释涂覆在纤维素纳米纸（CNP）基底上的 CNT/TiO2/chlorophyll 光催化剂对 PBEC 性能的影响，并将其结果与商用铟锡氧化物（ITO）玻璃和柔性 ITO 作为基底的结果进行比较。结果表明，CNP 的薄层电阻很高，为 61182 Ω sq-1，在 CNT/TiO2/Chl 生物催化剂的作用下，薄层电阻降低了 80%。在柔性 ITO 上涂覆 CNT/TiO2/Chl 可产生 0.95 至 1 V 的最高输出电压。在刚性 ITO 阳极上照射 CNT/TiO2/Chl 得到的最大电流密度（Jmax）为 3726 mA m-2，最大功率密度值约为 574 mW m-2。在黑暗条件下，以 CNP 为支撑基底观察到的功率密度最高。采用 CNT/TiO2/Chl 和 CNP 作为支撑基底材料的光生物电化学电池在可穿戴电子设备、环境监测、远程或离网能源供应以及可再生能源系统等多种应用领域具有巨大潜力，从而有助于推动可持续能源技术的发展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Electrochemical Science and Engineering

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