When a conductor e.g. metal or carbon is immersed in aelectrolyte, electric double layer will be formed at the interfaceof the solid electrode and electrolyte. The equilibrium potentialis related to the double-layer formed at the interface. Under thecertain circumstance, the double-layer on the interface candisappear, the potential at which no double-layer is called “pointof zero chargeâ€. Please explain how it happens. (hint: the doublelayer is formed due to the difference of free energy between theelectrode material and electrolyte. How to stop electron flow?)
