Promotion of anodic electron transfer in a microbial fuel cell combined with a silicon solar cell

作者：Ding, Hongrui; Li, Yan; Lu, Anhuai^*; Wang, Xin; Wang, Changqiu

来源：Journal of Power Sources, 2014, 253: 177-180.

DOI：10.1016/j.jpowsour.2013.12.047

• Microbial fuel cell
• Silicon solar cell
• Electron transfer
• Anode potential
• Microbial oxidation

This study focuses on the promotion of electron transfer in microbial fuel cells (MFCs) by equipping a silicon solar cell (SSC) into the circuit. As compared to a sole MFC, a significant improvement of power output is observed in the MFC SSC, that the maximum power density increases from 7.5 W m(-3) -19W m(-3) by 2.53 times. A linear relationship between anodic potential and current has been observed when the current is below the limiting point of SSC. We estimate the electron transfer rate can be promoted in a MFC-SSC under the condition that the anodic microbial reactions are unaffected by the incorporation of a SSC. In this way, the anodic electrons are fully pumped and enter into the external circuit. This estimation is thereby demonstrated by the 24-h test, which shows the quantity of the electrons fluent in the circuit of a MFC SSC is doubled and the microbial oxidation efficiency is improved to 341.6% as compared with a sole MFC.

• 出版日期2014-5-1
• 单位北京大学