eVionyx commercializes three electrochemical components. These three components form the basis for eVionyx’s metal-air fuel cells. The O-CATTM is a high performing air cathode that can be used in both batteries and fuel cells. MembrionTM is a polymer based membrane material with very high ionic conductivity that can used for batteries and fuel cells. MetfuelTM is a high performance zinc based electrode for use in zinc- based fuel cell systems.
eVionyx has also announced the availability of the EPM 100TM, the first product in the Energy Power Module family of small Zinc-air power devices. The EPM 100 is a disposable, 6 Volt, 50-Watt, high power Zinc-air energy source with an ultra-long shelf life. (12-01 BD69-11)
Metal Fuel Cells (02-01, BD70-13)
Two major classifications can be made for fuel cells based on what is oxidized at the anode. Popular fuel cells such as PEM or SOFC utilize the removal of the electron from a hydrogen atom, producing external electricity and mobilizing the hydrogen ion through the electrolyte. Metal fuel cells oxidize a metal atom such as aluminum or zinc which produces the external circuit electron, while transporting the metal ion through a liquid electrolyte such as potassium hydroxide.
Benefits of the metal fuel cells include greater energy density of practical quantities of fuel and useage of inexpensive fuels such as aluminum and zinc, and benign chemistries. While problems exist, units are up and operating. Major players include: Aluminum Power Inc., eVonyx Inc., H Power Corp., and Metallic Power, Inc.
June 2001, pp. 55-59