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Title: Doped calcium manganites for advanced high-temperature thermochemical energy storage

Developing efficient thermal storage for concentrating solar power plants is essential to reducing the cost of generated electricity, extending or shifting the hours of operation, and facilitating renewable penetration into the grid. Perovskite materials of the CaB xMn 1-xO 3-δ family, where B = Al or Ti, promise improvements in cost and energy storage density over other perovskites currently under investigation. Thermogravimetric analysis of the thermal reduction and reoxidation of these materials was used to extract equilibrium thermodynamic parameters. Lastly, the results demonstrate that these novel thermochemical energy storage media display the highest reaction enthalpy capacity for perovskites reported to date, with a reaction enthalpy of 390 kJ/kg, a 56% increase over previously reported compositions.
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  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0363-907X; 647624
Grant/Contract Number:
Accepted Manuscript
Journal Name:
International Journal of Energy Research
Additional Journal Information:
Journal Volume: 40; Journal Issue: 2; Journal ID: ISSN 0363-907X
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
Country of Publication:
United States
25 ENERGY STORAGE; thermochemical energy storage; concentrating solar power; perovskite; thermogravimetric analysis; air Brayton