Department of Chemical and Petroleum Engineering, Sharif University of Technology, Azadi Avenue, P.O. Box 11365-9465, Tehran, Iran.
Department of Chemical and Petroleum Engineering, Sharif University of Technology, Azadi Avenue, P.O. Box 11365-9465, Tehran, Iran.
Biosens Bioelectron. 2016 May 15;79:327-33. doi: 10.1016/j.bios.2015.12.022. Epub 2015 Dec 15.
This study reports the fabrication of a microfluidic microbial fuel cell (MFC) using nickel as a novel alternative for conventional electrodes and a non-phatogenic strain of Escherichia coli as the biocatalyst. The feasibility of a microfluidic MFC as an efficient power generator for production of bioelectricity from glucose and urea as organic substrates in human blood and urine for implantable medical devices (IMDs) was investigated. A maximum open circuit potential of 459 mV was achieved for the batch-fed microfluidic MFC. During continuous mode operation, a maximum power density of 104 Wm(-3) was obtained with nutrient broth. For the glucose-fed microfluidic MFC, the maximum power density of 5.2 μW cm(-2) obtained in this study is significantly greater than the power densities reported previously for microsized MFCs and glucose fuel cells. The maximum power density of 14 Wm(-3) obtained using urea indicates the successful performance of a microfluidic MFC using human excreta. It features high power density, self-regeneration, waste management and a low production cost (<$1), which suggest it as a promising alternative to conventional power supplies for IMDs. The performance of the microfluidic MFC as a power supply was characterized based on polarization behavior and cell potential in different substrates, operational modes, and concentrations.
本研究报告了一种使用镍作为传统电极的新型替代品和一种非致病性大肠杆菌菌株作为生物催化剂的微流控微生物燃料电池 (MFC) 的制造。研究了微流控 MFC 作为一种高效电源的可行性，用于从葡萄糖和尿素等有机基质中产生生物电能，这些基质存在于人体血液和尿液中，用于植入式医疗设备 (IMD)。批量进料微流控 MFC 的开路电位最大可达 459 mV。在连续模式运行期间，在营养肉汤中获得了 104 Wm(-3) 的最大功率密度。对于葡萄糖进料的微流控 MFC，本研究中获得的 5.2 μW cm(-2) 的最大功率密度明显大于先前报道的微尺寸 MFC 和葡萄糖燃料电池的功率密度。使用尿素获得的 14 Wm(-3) 的最大功率密度表明，使用人体排泄物的微流控 MFC 性能良好。它具有高功率密度、自我再生、废物管理和低成本 (<$1) 的特点，这表明它是 IMD 传统电源的有前途的替代品。根据不同基质、操作模式和浓度下的极化行为和电池电势，对微流控 MFC 的电源性能进行了表征。
