Reversible electrochemical mirror

A reversible electrochemical mirror comprising:

• a first substrate;
• a second substrate facing the first substrate;
• a first transparent electrode disposed on the first substrate and facing the second substrate;
• a second transparent electrode disposed on the second substrate and facing the first transparent electrode;
• an electrolyte solution interposed between the first transparent electrode and the second transparent electrode;
• and
• a counter electrode material layer disposed on the second transparent electrode and contacting the electrolyte solution,
• wherein the counter electrode has a planar surface contacting the electrolyte solution,
• wherein the counter electrode includes one of an ion storage material and an electrochromic material, and
• wherein the electrolyte solution includes a first chemical and a second chemical, such that when a voltage having a first polarity is applied between the first transparent electrode and the second transparent electrode, a metal in the first chemical forms a metal layer on the first transparent electrode, and when a voltage having a second polarity opposite the first polarity is applied between the first transparent electrode and the second transparent electrode, the metal layer dissolves into the electrolyte solution and the counter electrode absorbs an ion from the second chemical.