A device that can produce carbon monoxide for therapeutic and laboratory applications is disclosed. The device includes and electrochemical cell that converts carbon dioxide or a carbon dioxide containing molecule such as a carbonate or bicarbonate or bicarbonate into carbon monoxide and oxygen. The cell contains additives so pure carbon monoxide is obtained.
STATEMENT OF GOVERNMENT INTEREST
 This invention was made, at least in part, with U.S. government support under Department of Energy Grant DE-SC0004453. The U.S. government has certain rights in the invention.