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@article{Zhou:2023:10.1002/eom2.12347,
author = {Zhou, Y and Zhou, Z and Sun, J and Liu, L and Luo, F and Xu, G and Cao, XE and Xu, M},
doi = {10.1002/eom2.12347},
journal = {Ecomat},
title = {Ruddlesden-Popper-type perovskite Sr3Fe2O7−δ for enhanced thermochemical energy storage},
url = {http://dx.doi.org/10.1002/eom2.12347},
volume = {5},
year = {2023}
}
TY - JOUR
AB - Perovskite has been considered a promising thermochemical energy storage material. Such materials can perform redox reactions reversibly under the control of oxygen partial pressure over a wide range of temperatures. Layered perovskites have been poorly studied as energy storage material, although their oxygen species exhibit good oxidation activity. In this work, Ruddlesden-Popper-type quasi-2D perovskite Sr<inf>3</inf>Fe<inf>2</inf>O<inf>7-δ</inf> and 3D perovskite SrFeO<inf>3-δ</inf> were prepared for the testing of thermochemical energy storage properties. It was shown that the degree of reduction reaction for Sr<inf>3</inf>Fe<inf>2</inf>O<inf>7-δ</inf> was much greater than that of SrFeO<inf>3-δ</inf>, with change of non-stoichiometry up to 0.79. The combined effect of thermodynamic parameters for samples on heat storage behavior was studied by Van't Hoff method. The reduction entropy of Sr<inf>3</inf>Fe<inf>2</inf>O<inf>7-δ</inf> is much higher than that of SrFeO<inf>3-δ</inf>, which explains the large promotion in the reaction degree of SrFeO<inf>3-δ</inf>. The total reduction enthalpy of Sr<inf>3</inf>Fe<inf>2</inf>O<inf>7-δ</inf> is about 2.8 times that of SrFeO<inf>3-δ</inf>, with both reduction enthalpy and reaction entropy affecting the heat storage capacity. Sr<inf>3</inf>Fe<inf>2</inf>O<inf>7-δ</inf> also has an attractive spectral absorption of 96.92% in the range of 300–2500 nm, which makes it advantageous in volumetric solar collector. Overall, Sr<inf>3</inf>Fe<inf>2</inf>O<inf>7-δ</inf> offers improved performance in terms of thermochemical energy storage compared to SrFeO<inf>3-δ</inf>. (
AU - Zhou,Y
AU - Zhou,Z
AU - Sun,J
AU - Liu,L
AU - Luo,F
AU - Xu,G
AU - Cao,XE
AU - Xu,M
DO - 10.1002/eom2.12347
PY - 2023///
TI - Ruddlesden-Popper-type perovskite Sr3Fe2O7−δ for enhanced thermochemical energy storage
T2 - Ecomat
UR - http://dx.doi.org/10.1002/eom2.12347
VL - 5
ER -
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