Ozone is an unstable form of oxygen with three atoms rather than two. Ozone can be used to destroy molds, mildew, fungus and viruses.
A number of processes have been patented for the electrochemical production of ozone. John A. Donahue patented a process in 1966 that passes an electric current through hydrogen fluoride. Peter C. Foller patented a process in 1982 with an electrolytic cell using highly electronegative substances such as silicon or arsenic. Anton Menth was part of group that patented a process in 1983 that passed a current through a solid electrolyte.
Jae-Duk Moon patented a process in 1992 using metal strips for electrodes mounted in a chamber to produce ozone from various liquid substrates. Takayuki Shimamune was part of a group that patented a process in 1993 using a titanium probe covered with silver, gold or similar metals that produces ozone in a chamber made of titanium or Teflon. Oliver J. Murphy was part of a group that patented a process that used a titanium probe to produce ozone from a gas diffusion layer.