2025年6月12日,Elsevier 旗下国际著名期刊《Renewable Energy》在线发表了云南师范大学能源与环境科学学院李建昌教授课题组的最新研究成果《Microelectric field enhances microbial fuel cell liquid-phase mass transfer to increase power output: An experimental and multi-physics field simulation study》。云南师范大学能源与环境科学学院李建昌教授通讯作者。第一作者为博士研究生刘洪周博士,通讯作者为李建昌教授。
https://www.sciencedirect.com/science/article/abs/pii/S0960148125013564
Abstract
Microbial fuel cells (MFCs) are a renewable energy technology. However, low power output remains the primary constraint in their commercialization. We have previously shown that MFC-microbial electrolysis cell (MEC) coupling based on the principle of electric field superposition can improve the power output of MFC. In this study, a multiphysics field simulation model was developed based on the MFC-MEC. We further evaluated the effect of a microelectric field (MF) on liquid-phase mass transfer (LPMT). The results showed that the total electromigration and diffusion fluxes of the MFC-MEC with shared anode (SA-MFC) were approximately 2–5-fold higher compared to the control, suggesting that MF improved LPMT. Notably, electromigration fluxes of SA-MFC accounted for 51.1 % of LPMT fluxes, which were higher than those in the control group (31.7 %), indicating that electromigration dominated the electrode region. The LPMT exhibited a synergistic relationship with the internal resistance and reaction rate, and the enhancement of the LPMT was beneficial for reducing the internal resistance and accelerating the reaction rate, which effectively improved the performance of the MFC. Hence, the enhancement of the LPMT is a critical step in improving the performance of MFC and provides new insights for further improving the performance of MFC.
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