Article
Materials Science, Multidisciplinary
Zhiqiang Dong, Jiaan Liu, Yonghua Wang, Da Song, Renzhong Cao, Xizhen Yang
Summary: Open-cell aluminum foams have unsatisfied sound absorption characteristic in the low-middle frequency range, but this can be improved by producing aluminum-polyurethane interpenetrating phase composite foams.
Article
Engineering, Electrical & Electronic
Shuyan Zhang, Hong Zhang, Senlin Leng, Yaqiong Wen, Hanxiao Wang, Zhicheng Li
Summary: A system of negative temperature coefficient (NTC) thermistors with adjustable room-temperature resistivity (rho(25)) and temperature sensitivity was fabricated using Sb/Ga co-doped SnO2 ceramics. The ceramics exhibited typical characteristics of NTC of resistivity and good electrical stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Zhilong Fu, Yaxin Wei, Yafei Liu, Bo Zhang, Aimin Chang
Summary: Improvements were made in the vacuum hot pressing process by replacing graphite foil with a platinum sheet, resulting in higher density and enhanced weak texture structure in pressure-sintered CaCeNbWO8 thermosensitive ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Engineering, Electrical & Electronic
Xiaohui Li, Xu Sang, Aimin Chang, Huimin Zhang
Summary: The study found that Nd doping has a significant impact on the microstructure and electrical properties of Ca1-xNdxCeNbWO8+delta ceramics, and the electrical properties of the compounds can be effectively adjusted by changing the doping concentration.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Physical
Chengjian Ma, Ning Li, Hong Gao, Jianxiang Ding
Summary: Novel Ni0.6CoMn1.4O4: x wt%Ag (NCMO: Ag-x) composite ceramics were successfully fabricated and their properties were investigated. The introduction of Ag nanoparticles improved the conductivity of the material and reduced the resistivity by decreasing grain boundary resistance and grain resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Composites
Chengbin Yu, Young Seok Song
Summary: A NTC thermistor with thermal sensing and control capabilities was manufactured using form stable phase change materials (PCMs). The incorporation of PCMs expanded the potential uses of the thermistor by providing a stable and continuous circuit. To prevent leakage, a graphene aerogel was employed as a supporting material. The PCM composite exhibited excellent thermal stability and could maintain the output current in the circuit, making it suitable for thermal controllable systems.
COMPOSITES COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Mingze Lu, Donglin He, Bo Zhang, Aimin Chang, Zhilong Fu
Summary: In this study, BaSnO3 + xCeO2 ceramics were synthesized by mixing BaSnO3 with CeO2. The addition of CeO2 improved the phase structure stability and high-temperature stability of the ceramics, reducing the aging coefficient. The resistivity decreased with the increase of CeO2 composition, making BaSnO3 + xCeO2 composites potential candidates for high-temperature NTC thermistor devices.
Article
Nanoscience & Nanotechnology
S. Sibilia, F. Bertocchi, S. Chiodini, F. Cristiano, L. Ferrigno, G. Giovinco, A. Maffucci
Summary: This paper investigates the temperature dependence of the electrical resistivity of low-cost commercial graphene-based strips, finding a linear trend and negative temperature coefficient in a wide temperature range. The derived analytical model of temperature-dependent resistivity is validated for heating applications using the graphene strips. These materials can potentially be used as thermistors in sensing or heating applications.
Article
Materials Science, Ceramics
Fang Guan, Ze-wei Dang, Yi-quan Wu, Xin Cheng, Shi-feng Huang
Summary: The novel sandwich-like structure proposed here for NTC thermistors demonstrates successful integration of LaCr0.7Fe0.3O3-NiMn2O4 supported composite ceramics with distinct electrical properties. X-ray diffraction analysis reveals the composition mainly consisting of orthorhombic perovskite LaCr0.7Fe0.3O3 and cubic spinel NiMn2O4 phases. The three layers exhibit good adhesion and high density, allowing for adjustment of electrical properties and improved thermal stability.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Yuyu Liu, Wenye Deng, Xianghui Chen, Yan Xue, Xuelian Bai, Huimin Zhang, Aimin Chang, Yongxin Xie
Summary: A series of novel high temperature negative temperature coefficient (NTC) composite ceramics have been fabricated by using the solid-state method. The composite ceramics exhibit excellent electrical properties and can be applied in high temperature and harsh environments.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Jie Gao, Shuai Xu, Muhammad Akbar, Chen Xia, Wenjing Dong, Chongqing Liu, Yuanjing Meng, Menghui Yuan, Baoyuan Wang, Xunying Wang
Summary: This research introduces a single-layer solid oxide fuel cell based on semiconductor-ionic conductor composite material, demonstrating high performance stability and greater tolerance for temperature changes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Polymer Science
Swatee Acharya, Lopamudra Swain, Bibhu Prasad Sahoo
Summary: Thermoplastic polyurethane/polypyrrole (TPU/PPy) dielectric composites film and lightweight foamyfilm were fabricated using simplified solvent casting and modified phase separation water immersion techniques. Chemical interaction and morphological investigations were analyzed through Raman spectroscopy and field emission scanning electron microscope (FESEM), respectively. The dielectric properties, including complex impedance, were determined over a wide range of frequencies and temperatures. The fabricated films exhibited low dielectric loss and can be used in energy storage and high-temperature sensing applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Zheqin Chen, Yongmin Xie, Jiaming Liu, Xiaocong Zhong, Zhifeng Xu, Ruixiang Wang
Summary: Layered LaNi0.6Fe0.4O3-delta (LNFO) was prepared via a modified sol-gel method using a carbon nanotube dispersion for pore formation. The prepared LNFO had expanded specific surface area and uniform pores, exhibiting superior electrochemical performance compared to bulk-LNFO prepared by conventional synthesis method. The catalyst stability was demonstrated through chronoamperometric test for over 7200 s.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Zhi Yang, Jian Zhang, Bingxue Wu, Xin Zhao, Xuanlin Lu, Yicheng Zhao, Yongdan Li
Summary: A cobalt-free composite cathode composed of La0.6Sr0.4FeO3-& delta; phase and La1.2Sr0.8NiO4+& delta; phase was synthesized using self-assembly technology. The composite cathode exhibited excellent oxygen activity, electrical conductivity, and ionic conductivity, leading to the lowest polarization resistances at 700 degrees C in oxygen and air. The one-pot synthesized nanocomposite is a promising cathode material for protonic ceramic fuel cells.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Sainan Chen, Jiacheng Jin, Han Chen, Lucun Guo
Summary: Experimental results show that the addition of 30 wt% LSCF into YBC leads to a decrease in polarization resistance, an increase in single cell output by 50% at 800 degrees C. The oxygen exchange capacity and conductivity of the YBC-LSCF composite material are greatly improved from 600 to 800 degrees C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
