Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
BaTiO3-based electrocaloric material with good temperature stability near room temperature as well as preparation method and application of BaTiO3-based electrocaloric material
The invention discloses a BaTiO3-based electrocaloric material with good temperature stability near the room temperature and a preparation method and application thereof, the chemical formula of the material is Ba < 1-x > LaxTi < 0.9 > Sn < 0.1 > O3, and the value range of x is 0-0.008. According to the Ba (1-x) LaxTi0. 9Sn0. 1O3 electrocaloric material prepared by the invention, a multiphase coexisting system can be provided at room temperature by introducing the Sn element, the phase change temperature of the material is moved to be close to the room temperature, then the phase change temperature of the material is further moved to be close to the room temperature by further regulating and controlling La < 3 + >, the electrocaloric response strength of the material close to the room temperature is improved, and the electrocaloric response strength of the material close to the room temperature is improved. Meanwhile, due to the introduction of La < 3 + >, the phase-change dispersion degree is improved, and the electrocaloric response and temperature stability of the material near the room temperature are greatly improved. The Ba < 1-x > LaxTi < 0.9 > Sn < 0.1 > O < 3 > electrocaloric material provided by the invention has high electrocaloric response strength near the room temperature and can keep good temperature stability in a wide temperature range, and the preparation method of the electrocaloric refrigeration material, which is environment-friendly and has practical application value, is provided for an electrocaloric refrigeration device.
本发明公开了一种室温附近具备良好温度稳定性的BaTiO3基电卡材料及其制备方法和应用，该材料的化学式为Ba1‑xLaxTi0.9Sn0.1O3，x的取值范围为0～0.008。本发明所制备的Ba1‑xLaxTi0.9Sn0.1O3电卡材料，通过Sn元素的引入，可以在室温下提供一个多相共存的体系，将材料相变温度移至室温附近，其次通过进一步调控La3+，使材料相变温度进一步移至室温附近，改善了室温附近材料的电卡响应强度，同时La3+的引入提高了相变弥散程度，极大的改善了材料在室温附近的电卡响应及温度稳定性。本发明所提供的Ba1‑xLaxTi0.9Sn0.1O3电卡材料在室温附近电卡响应强度高，并且宽温度范围内能够保持良好的温度稳定性，为电卡制冷器件提供了一种环境友好且具有实际应用价值的电卡制冷材料的制备方法。
BaTiO3-based electrocaloric material with good temperature stability near room temperature as well as preparation method and application of BaTiO3-based electrocaloric material
The invention discloses a BaTiO3-based electrocaloric material with good temperature stability near the room temperature and a preparation method and application thereof, the chemical formula of the material is Ba < 1-x > LaxTi < 0.9 > Sn < 0.1 > O3, and the value range of x is 0-0.008. According to the Ba (1-x) LaxTi0. 9Sn0. 1O3 electrocaloric material prepared by the invention, a multiphase coexisting system can be provided at room temperature by introducing the Sn element, the phase change temperature of the material is moved to be close to the room temperature, then the phase change temperature of the material is further moved to be close to the room temperature by further regulating and controlling La < 3 + >, the electrocaloric response strength of the material close to the room temperature is improved, and the electrocaloric response strength of the material close to the room temperature is improved. Meanwhile, due to the introduction of La < 3 + >, the phase-change dispersion degree is improved, and the electrocaloric response and temperature stability of the material near the room temperature are greatly improved. The Ba < 1-x > LaxTi < 0.9 > Sn < 0.1 > O < 3 > electrocaloric material provided by the invention has high electrocaloric response strength near the room temperature and can keep good temperature stability in a wide temperature range, and the preparation method of the electrocaloric refrigeration material, which is environment-friendly and has practical application value, is provided for an electrocaloric refrigeration device.
本发明公开了一种室温附近具备良好温度稳定性的BaTiO3基电卡材料及其制备方法和应用，该材料的化学式为Ba1‑xLaxTi0.9Sn0.1O3，x的取值范围为0～0.008。本发明所制备的Ba1‑xLaxTi0.9Sn0.1O3电卡材料，通过Sn元素的引入，可以在室温下提供一个多相共存的体系，将材料相变温度移至室温附近，其次通过进一步调控La3+，使材料相变温度进一步移至室温附近，改善了室温附近材料的电卡响应强度，同时La3+的引入提高了相变弥散程度，极大的改善了材料在室温附近的电卡响应及温度稳定性。本发明所提供的Ba1‑xLaxTi0.9Sn0.1O3电卡材料在室温附近电卡响应强度高，并且宽温度范围内能够保持良好的温度稳定性，为电卡制冷器件提供了一种环境友好且具有实际应用价值的电卡制冷材料的制备方法。
BaTiO3-based electrocaloric material with good temperature stability near room temperature as well as preparation method and application of BaTiO3-based electrocaloric material
一种室温附近具备良好温度稳定性的BaTiO3基电卡材料及其制备方法和应用
01.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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