LAUSR

A novel flow channel configuration of a membraneless microfluidic fuel cell (MMFC) with porous flow‐through electrodes was investigated numerically. A numerical model was developed for the electrochemical analysis and validated using experimental data. The physical phenomena involved in the microfluidic fuel cell including the flow of the vanadium redox couple (oxidant and fuel), mass transport, and electrochemical reaction kinetics at the electrodes are coupled in the numerical model. Considering the impact of diffusive mixing zone on the performance of MMFC, a hollow structure is proposed for the cross‐section of the central flow channel. The hollow structure showed a peak power density, which is higher than those of the H‐shaped, simple bridge‐shaped, and rectangular channels by 6%, 18%, and 82%, respectively.