Ink-jet printed new core@shell ceramic for high stability NTC thermistors

被引：3
|
作者：
Li, Haibing [1 ,2 ]
Zhang, Huimin [1 ]
Li, Feng [2 ]
Chang, Aimin [1 ]
Zhuo, Hua [2 ]
机构：
[1] Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Xinjiang Key Lab Elect Informat Mat & Devices, 40-1 South Beijing Rd, Urumqi 830011, Peoples R China
[2] State Market Regulat Technol Innovat Ctr Asia Ener, Xinjiang Uygur Autonomous Reg Res Inst Measurement, 188 East Hebei Rd, Urumqi 830011, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2023年 / 49卷 / 12期
关键词：
Core@shell structure; Ceramic thermistors; Ink-jet printing method; Electrical property; ELECTRICAL-PROPERTIES; MICROSTRUCTURE;
D O I：
10.1016/j.ceramint.2023.03.216
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Mn1.95Co0.21Ni0.84O4-core@LaMnO3-shell microbeads were in-situ processed by an ink-jet printing method. The composition of the LaMnO3 on the electrical properties compared with the only core Mn1.95Co0.21Ni0.84O4 (MCN) ceramic were studied. X-ray diffraction analysis showed that the ceramics were composed mainly of cubic spinel NiMn2O4 with rhombohedral perovskite LaMnO3 phase. The X-ray photoelectron spectroscopy (XPS) results explained the ion migration occurred in the composite materials. These ceramics had negative temper ature coefficients and B25/50 and Ea values of 1456-5972 K and 0.0814-0.5148 eV, respectively. Moreover, the aging coefficients (oR/R) of the bilayer core@shell structure ceramics were <0.51%, which is much lower than that of uncoated Mn1.95Co0.21Ni0.84O4 microbeads (4.1%). The grain boundaries were verified to dominate important role in the electrical property of the Mn1.95Co0.21Ni0.84O4-core@LaMnO3-shell ceramics.
引用
收藏
页码：20832 / 20838
页数：7
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