Low-Pressure Electrolytic Ammonia Production for Ammonia-Based Energy Storage

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The Energy & Environmental Research Center (EERC) is developing a low-pressure 1-step electrolytic ammonia (1-SEA) process that would enable ammonia-based energy storage technology (NH3-BEST) in combination with a direct ammonia fuel cell to enable electricity generation unit (EGU) accommodation of load fluctuations while operating within an optimal-performance baseline output range, ensuring EGU operational efficiency and minimum degradation of materials, equipment, and performance due to load cycling-driven stresses. The 1-SEA process is built around a high-temperature electrolyte to achieve a proton conductivity (PC) at 300°C of >10-2 S/cm, similar to that of state-of-the-art Nafion at 70°C. Combined with an appropriate cathode catalyst, the electrolyte is projected to enable production at a total energy input of 7.1 MWh/ton versus 8.5 MWh/ton for state- of-the-art (2018) Haber Bosch-based ammonia production.

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Journal: TechConnect Briefs
Volume: TechConnect Briefs 2021
Published: October 18, 2021
Pages: 232 - 235
Industry sector: Energy & Sustainability
Topics: Catalysis, Energy Storage
ISBN: 978-0-578-99550-2