I'm an electrical engineer. Throughout my education, I was taught that current always has a return path. This understanding applies to everything.
Batteries use an electrolyte to strip electrons from the positive electrode and move them to the negative electrode. The potential is then derived when the electrons want to return back to the positive electrode.
In a generator, a magnet passes by a coil of wire. The motion of the magnetic field causes the electrons in the wire to move to one side. This then causes an abundance of electrons on one wire and a deficit on the other. Again this sets up a difference of potential because the electrons want to get back to the positive electrode.
A hydrogen fuel cell has hydrogen on one side of a membrane and oxygen on the other. The hydrogen wants to combine with the oxygen but when it passes through the membrane the electrons are stripped off. This causes an abundance of electrons on one side and a deficit on the other.
An HB11 fusion reactor bombards a pellet of boron 11 with hydrogen atoms. When a collision occurs between a hydrogen and a boron atom the result is two helium atoms with no electrons. The helium atoms form the positive electrode due to the lack of electrons. Where do the electrons come from?
That is really where my confusion comes from. I suspect that the helium will rob electrons from whatever is around. That seems like a problem. What am I missing?