Fluidic flow can improve the transport of matters in many engineering applications. Here, we introduced a biophotovoltaic cell in which hydrodynamic flow was adopted to enhance the mass transfer performance for electrochemical devices. Carbon nanotubes (CNTs) were used as a filler for conductive nanofluid. Synechococcus sp. was used as a microbial photosynthetic cell. The electrochemical characteristics of the carbon nanofluid were analyzed. It was found that a conductive pathway generated by CNTs could transfer electrons from cells to electrode efficiently. The effect of flow direction was evaluated by injecting the cell medium into the device in the parallel and transverse directions. A significantly enhanced photocurrent was harvested when applying the transverse flow to the electrode. In addition, numerical simulation was conducted to support the experimental results.

在许多工程应用中，流体流可以改善物质的输送。在这里，我们介绍了一种生物光伏电池，其中采用流体动力流来增强电化学装置的传质性能。碳纳米管（CNT）用作导电纳米流体的填料。球菌sp。被用作微生物的光合细胞。分析了碳纳米流体的电化学特性。发现碳纳米管产生的导电途径可以有效地将电子从细胞转移到电极。通过沿平行和横向方向将细胞培养基注入设备中来评估流向的影响。当将横向流施加到电极时，收获了明显增强的光电流。另外，进行了数值模拟以支持实验结果。