An electrochemical system comprising a cathode electrolyte comprising added carbon dioxide and contacting a cathode; and a first cation exchange membrane separating the cathode electrolyte from an anode electrolyte contacting an anode; and an electrochemical method comprising adding carbon dioxide into...http://www.google.de/patents/US7993511?utm_source=gb-gplus-sharePatent US7993511 - Electrochemical production of an alkaline solution using CO2 
