Well, this brown layer is a platinum catalyst. And this platinum acts to catalyze or speed up that reaction going from our reacting to products. So when this guy in a our anode, it reacts with the platinum catalyst producing two moles of H plus ions and two moles of electrons. Now, these two moles of electrons travel via the conductor this way. Notice we have a membrane. And this membrane does not allow our electrons to pass from this anode to capital via this membrane.