Integrating photosynthetic cell components with nanostructured materials can facilitate the conversion of solar energy into electric power for creating sustainable carbon-neutral energy sources. With the aim at exploring efficient photoinduced biocatalytic energy conversion systems, we have used an amidated carbon nanotube (aCNT) networked matrix to integrate thylakoid membranes (TMs) for construction of a direct electron transfer-driven biosolar cell. We have evaluated the resulting photobioelectrochemical cells systematically. Compared to the carboxylated CNT (cCNT)-TMs system, the aCNT-TMs system enabled a 1.5-fold enhancement in photocurrent density. This system offers more advantages including a reduced charge-transfer resistance, a lower open-circuit potential, and an improved cell stability. More remarkably, the average power density of the optimized cells was 250 times higher than that of reported analogue systems. Our results suggest the significance of physical and electronic interactions between the photosynthetic components and the support nanomaterials and may offer new clues for designing improved biosolar cells.

中文翻译：

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由光合作用的膜和CNT网络之间的直接电子转移驱动的超电容生物太阳能电池，具有增强的性能

将光合作用的电池组件与纳米结构的材料集成在一起，可以促进将太阳能转换为电能，从而创造可持续的碳中和能源。为了探索有效的光诱导生物催化能量转换系统，我们使用了酰胺化的碳纳米管（aCNT）网络基质来整合类囊体膜（TMs），以构建直接电子传输驱动的生物太阳能电池。我们已经系统地评估了产生的光生电化学细胞。与羧基化CNT（cCNT）-TMs系统相比，aCNT-TMs系统可将光电流密度提高1.5倍。该系统具有更多优势，包括降低的电荷转移电阻，更低的开路电势和更高的电池稳定性。更明显的是 优化单元的平均功率密度比报道的模拟系统高250倍。我们的研究结果表明光合组件和支持纳米材料之间的物理和电子相互作用的重要性，并可能为设计改进的生物太阳能电池提供新的线索。