Crossover of ion through porous silicon based membrane

Especially in recent years, the most important issues that attract attention in the energy sector are the renewable energy and renewable energy usage areas. In this work, the most important part of the proton exchange membrane fuel cells that supply energy by using hydrogen energy is produced. Due to its superior optic and electrical properties, porous silicon, which is the focus of attention in recent years, has been preferred as membranes and production has been completed using different steps from the literature. By saving time during production, easy and low cost methods have been preferred. In order to observe the fuel crossover performance of the porous silicon, was carried out the permeation of formic acid through porous silicon membrane. The wafer was used a boron doped p-type wafer with 0.001-0.005 Ωcm, <100> oriented, double side polished, 3.61 cm2 active area and 200 µm thick. The thickness of the silicon wafer was reduced to 180 µm and was determined by the fuel crossover performance.