In Situ Resource Utilization(ISRU) is a key technology required to enable missions to the Moon and Mars. The Martian atmosphere consists of 95% carbon dioxide which can be used in (ISRU) processes to synthesize propellant and life support consumables. Reactive Innovation proposes to develop a lightweight electrochemical reactor to collect and pressurize CO2 from the Martian atmosphere. The Phase I successfully demonstrated collection and pressurization of CO2 from pure and dilute gas streams. In the proposed Phase II program, we will continue to optimize components and scale up the technology to meet the needs of NASA's ISRU processing applications.