10 research outputs found
RuddlesdenâPopperâtype perovskite Sr3Fe2O7âδ for enhanced thermochemical energy storage
Abstract 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, RuddlesdenâPopperâtype quasiâ2D perovskite Sr3Fe2O7âδ and 3D perovskite SrFeO3âδ were prepared for the testing of thermochemical energy storage properties. It was shown that the degree of reduction reaction for Sr3Fe2O7âδ was much greater than that of SrFeO3âδ, with change of nonâstoichiometry 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 Sr3Fe2O7âδ is much higher than that of SrFeO3âδ, which explains the large promotion in the reaction degree of SrFeO3âδ. The total reduction enthalpy of Sr3Fe2O7âδ is about 2.8 times that of SrFeO3âδ, with both reduction enthalpy and reaction entropy affecting the heat storage capacity. Sr3Fe2O7âδ also has an attractive spectral absorption of 96.92% in the range of 300â2500ânm, which makes it advantageous in volumetric solar collector. Overall, Sr3Fe2O7âδ offers improved performance in terms of thermochemical energy storage compared to SrFeO3âδ
Electrochemical data mining:from information to knowledge: general discussion
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A two-colour multiplexed lateral flow immunoassay system to differentially detect human malaria species on a single test line
Seawater-assisted synthesis of MnCe/zeolite-13X for removing elemental mercury from coal-fired flue gas
Emerging electrochemical methods at the nanointerface: general discussion
The first page of this article is displayed as the abstract