Microfluidic fuel cell is a promising power source in many applications, such as portable electronic devices. In this work, a novel and unique scale-up approach is developed to increase the capability of the microfluidic aluminum-air fuel cell, while maintaining the co-laminar flow characteristic at the same time. In the scaled-up cell, the crossover of different electrolyte streams was well controlled and a higher cell output was achieved. With a four-fold increase in the electrode area, the maximum current density could be maintained over 75%. Impedance spectroscopy study on full aluminum-air cells was conducted for the first time, and employed to analyze the cell properties during their scaling up process.
Chen, B., Leung, D. Y. C., Wang, H., & Xuan, J. (2016). Scaling Up Microfluidic Aluminum-Air Cell with Electrochemical Impedance Spectroscopy (EIS) Assisted Performance Analysis. Journal of The Electrochemical Society, 163(9), F1032-F1037. https://doi.org/10.1149/2.0501609jes