Influence of V/Ni-doping on electrical properties and aging stability of ZnFe2O4-based NTC ceramics

Hao, Wenbin; Zhang, Hong; Gao, Caiyun; Li, Bicai; Ma, Zhiyuan; Li, Zhicheng

doi:10.1007/s10854-021-06316-4

Cited by 6 publications

(1 citation statement)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Current research studies on NTC thermistors are mainly focused on the introduction of Cu 2+ , Na + , Mn 3+ , Zn 2+ , or Fe 3+ ions into their structures to increase the B value and reduce the resistivity of the NTC material. − The NTC materials in these studies are mostly ceramic materials, which include spinel-type oxides and perovskite-type oxides. Although they have excellent thermal stabilities, such materials require high reaction temperatures and/or high pressures, which make their synthesis consume more time and high energy. , Further, the fabrication of inorganic NTC thin films is complicated and the fabricated thin films lack flexibility .…”

Section: Introductionmentioning

confidence: 99%

Water-Stable Hybrid Lead-Free Perovskite for Negative Temperature Coefficient Thermistors

Wang

et al. 2023

Inorg. Chem.

View full text Add to dashboard Cite

Negative temperature coefficient (NTC) thermistors feature higher sensitivities and faster response speeds and thereby have particular applications in many fields. However, current NTC thermistors are mostly based on inorganic ceramic materials, which show obvious drawbacks in material synthesis, property modulation, and flexible film fabrication. Herein, we report, for the first time, the promising application of an inorganic–organic hybrid NTC thermistor. A new lead-free hybrid iodo bismuthate [1,1′,1″-(benzene-1,3,5-triyl)tris(3-methyl-1H-imidazol-3-ium)]Bi2I9 [denoted as (Me3TMP)Bi2I9 ] was synthesized by a “double-free” strategy. (Me3TMP)Bi2I9 features a lead-free binuclear bismuth iodine anion charge compensated by a “classic hydrogen-bond-free” cation. (Me3TMP)Bi2I9 exhibits remarkable stability in water and UV light irradiation and shows the largest temperature sensitivity coefficient among all reported NTC materials. Theoretical calculation and detailed structural analysis disclose that the seriously distorted (BiI6) octahedra are responsible for the intriguing NTC effect for (Me3TMP)Bi2I9 .

show abstract