Size difference between Hydrogen ion and electron?

[rizwanibn]

While studying the generation of electricity using hydrogen fuel cells, I came across a point that

"The electrolyte is a thin, fragile sheet of acidic, solid organic polymer about 50 microns (2 thousandths of an inch) thick which permits the passage of Hydrogen ions but is impermeable to electrons."
So i would like to confirm that the impermeability of electrons is due to it's larger size.

Can you please help?
Thank you.

 

[Bystander]

acidic, solid organic polymer

 

[rizwanibn]

So it is because of the acidic nature of the electrolyte. Right?

 

[Bystander]

The polymer cannot move, it can only ionize to protons, and immobile negatively charged, anionic functional groups. Electrostatic repulsion prevents movement of any negatively charged ions, particles, through the polymer film. The protons move through freely from one fixed anionic site to the next. There is no sorting of subatomic particles by size going on in any molecular scale structure.

 

[rizwanibn]

Thank

The polymer cannot move, it can only ionize to protons, and immobile negatively charged, anionic functional groups. Electrostatic repulsion prevents movement of any negatively charged ions, particles, through the polymer film. The protons move through freely from one fixed anionic site to the next. There is no sorting of subatomic particles by size going on in any molecular scale structure.

Thank You Very Much.

 

[Bystander]

You are quite welcome.