Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 8, Issue 39, Pages 13686-13694Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0tc04044d
Keywords
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Funding
- Ministerio de Economia y Competitividad (MINECO)
- EU-FEDER [MAT2017-86453-R]
- Xunta de Galicia [ED431G/09, ED431B]
- Ministry of Science of Spain [MAT2016-80762-R]
- Conselleria de Cultura, Educacion e Ordenacion Universitaria [ED431F 2016/008]
- Conselleria de Cultura, Educacion e Ordenacion Universitaria (Centro singular de investigacion de Galicia) [ED431G/09]
- European Regional Development Fund (ERDF)
- Xunta de Galicia
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In this work, we report a new halometallate [(CH3)(3)S][FeCl4] with plastic crystal behaviour as a new material for multi-energy storage. This material undergoes a first-order solid-solid plastic crystal phase transition near room temperature with a relatively large latent heat (similar to 40 kJ kg(-1)) and an operational temperature for storing and releasing thermal energy between 42 degrees C (315 K) and 29 degrees C (302 K), very appropriate for solar thermal energy storage. In addition, the dielectric, magnetization and electron spin resonance studies reveal that this material exhibits multifunctional properties with temperature-induced reversible changes in its dielectric, conducting and magnetic behaviour associated with the phase transition. Also, the dielectric permittivity increases sharply up to 5 times when inducing the phase transition, which can be exploited to store electric energy into a capacitor. Therefore, [(CH3)(3)S][FeCl4] is a very interesting compound with the coexistence of multifunctional properties that can be useful for both solar thermal and electric energy storage.
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