Air-stable, earth-abundant molten chlorides and corrosion-resistant containment for chemically-robust, high-temperature thermal energy storage for concentrated solar power
نویسندگان
چکیده
A dramatic reduction in man-made CO2 emissions could be achieved if the cost of electricity generated from concentrated solar power (CSP) plants become competitive with fossil-fuel-derived electricity. The heat-to-electricity conversion efficiency CSP may significantly increased (and associated decreased) by operating turbines inlet temperatures ≥750 °C instead ≤550 °C, and using thermal energy storage (TES) at to allow for rapidly dispatchable and/or continuous production. Unfortunately, earth-abundant MgCl2–KCl-based liquids currently being considered as low-cost media large-scale, high-temperature TES are susceptible oxidation ambient air, undesired changes liquid composition enhanced corrosion metal alloys pipes tanks containing such liquids. In this paper, alternative high-temperature, molten chlorides that resistant air identified via thermodynamic calculations. resistance, corrosion-resistant containment, 750 then demonstrated. Such an air-tolerant strategy, involving chemically-robust, paired effective containment materials, provides a critical advance towards higher-temperature operation of, lower-cost generation from, plants.
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ژورنال
عنوان ژورنال: Materials Today
سال: 2021
ISSN: ['1369-7021', '1873-4103']
DOI: https://doi.org/10.1016/j.mattod.2021.02.015