Hydrogen crossover poses a critical issue in terms of the safe and efficient operation polymer electrolyte membrane water electrolysis (PEMWE). The impact key operating parameters such as temperature pressure on was investigated past. However, many recent studies suggest that relation between hydrogen flux current density is not fully resolved. This study investigates PEMWE cells using thin Naf...

We analytically calculate the secular precession of the pericenter of a test particle orbiting a central body surrounded by a continuous distribution of Dark Matter (DM) by using some commonly adopted spherically symmetric density profiles for it. We obtain exact expressions without resorting to a-priori simplifying assumptions on the orbital geometry of the test particle. Our formulas allow us...