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Chromic acid rare earth-based high-entropy ceramic conductive nanofiber as well as preparation method and application thereof
The invention discloses a chromic acid rare earth-based high-entropy ceramic conductive nanofiber and a preparation method and application thereof, the nanofiber has the following chemical general formula: RECrO3, RE is a rare earth element, and the rare earth element is selected from at least one of samarium (Sm), europium (Eu), gadolinium (Gd), holmium (Ho) and ytterbium (Yb). The nanofiber provided by the invention has an orthogonal perovskite structure, five rare earth elements are contained in the structure of the nanofiber at most, and the rare earth elements have a unique electronic layer structure, so that a high-entropy concept is introduced, namely, due to a high-entropy effect in thermodynamics, the material has certain phase stability, and volatilization of Cr can be inhibited. And due to relatively large lattice distortion, the thermal conductivity of the nanofiber is as low as 0.35 W.m <-1 >. K <-1 >, so that the nanofiber has a relatively good application prospect in wide fields.
本发明公开了一种铬酸稀土基高熵陶瓷导电纳米纤维及其制备方法和应用，所述纳米纤维具有下述化学通式：RECrO3，其中RE为稀土元素，所述稀土元素选自钐(Sm)、铕(Eu)、钆(Gd)、钬(Ho)、镱(Yb)中的至少一种。本发明提供的纳米纤维具有正交钙钛矿结构，由于纳米纤维的结构中最多有五种稀土元素，而稀土元素具有较为独特的电子层结构，引入高熵概念，即由于其热力学上的高熵效应，使材料具有一定的相稳定性，可以抑制Cr的挥发。且由于较大的晶格畸变，该纳米纤维热导率低至0.35W·m‑1·K‑1，使其在广大领域展现出较好的应用前景。
Chromic acid rare earth-based high-entropy ceramic conductive nanofiber as well as preparation method and application thereof
The invention discloses a chromic acid rare earth-based high-entropy ceramic conductive nanofiber and a preparation method and application thereof, the nanofiber has the following chemical general formula: RECrO3, RE is a rare earth element, and the rare earth element is selected from at least one of samarium (Sm), europium (Eu), gadolinium (Gd), holmium (Ho) and ytterbium (Yb). The nanofiber provided by the invention has an orthogonal perovskite structure, five rare earth elements are contained in the structure of the nanofiber at most, and the rare earth elements have a unique electronic layer structure, so that a high-entropy concept is introduced, namely, due to a high-entropy effect in thermodynamics, the material has certain phase stability, and volatilization of Cr can be inhibited. And due to relatively large lattice distortion, the thermal conductivity of the nanofiber is as low as 0.35 W.m <-1 >. K <-1 >, so that the nanofiber has a relatively good application prospect in wide fields.
本发明公开了一种铬酸稀土基高熵陶瓷导电纳米纤维及其制备方法和应用，所述纳米纤维具有下述化学通式：RECrO3，其中RE为稀土元素，所述稀土元素选自钐(Sm)、铕(Eu)、钆(Gd)、钬(Ho)、镱(Yb)中的至少一种。本发明提供的纳米纤维具有正交钙钛矿结构，由于纳米纤维的结构中最多有五种稀土元素，而稀土元素具有较为独特的电子层结构，引入高熵概念，即由于其热力学上的高熵效应，使材料具有一定的相稳定性，可以抑制Cr的挥发。且由于较大的晶格畸变，该纳米纤维热导率低至0.35W·m‑1·K‑1，使其在广大领域展现出较好的应用前景。
Chromic acid rare earth-based high-entropy ceramic conductive nanofiber as well as preparation method and application thereof
一种铬酸稀土基高熵陶瓷导电纳米纤维及其制备方法和应用
ZHAO WEIJUN (author) / YANG FAN (author) / CHEN HENG (author)
2023-10-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B82Y
Bestimmter Gebrauch oder bestimmte Anwendung von Nanostrukturen
,
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
/
D01F
Chemische Gesichtspunkte bei der Herstellung von produzierten Filamenten, Zwirnen, Fasern, Borsten oder Bändern
,
CHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
/
H01C
Widerstände
,
RESISTORS
/
H05K
PRINTED CIRCUITS
,
Gedruckte Schaltungen
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