Carbon Dioxide electrolysis

This intrigues me enough to want to put it on the sidebar for interesting reading.  Here's the paragraph that got my attention:

Oxygen can be produced by passing CO2 through a zirconia electrolysis cell at 800 to 1000deg C. Twenty to thirty percent of the CO2 dissociates into oxygen and carbon monoxide. Separation is accomplished by electrochemical transport of oxide ion through a membrane. A prototype reactor using this chemistry has been run for over 1000 hours. Using such a scheme, we could bring a small unit to the surface of Mars which would then continuously make oxygen for life support, propellant use, or further processing. The only additional item we would need to supply is the power to run it: a 12kW unit would produce about one metric ton of oxygen per month.

The page doesn't have a date on it.  It does appear to be a Nasa site:  here's the link enclosed in quotation marks  "http://ares.jsc.nasa.gov/HumanExplore/Exploration/EXLibrary/docs/ISRU/08Atmos.htm"

I got the link from a Google Search.