Article
Chemistry, Physical
Sajad Vafaeenezhad, Miguel A. Morales -Zapata, Amir Reza Hanifi, Miguel A. Laguna-Bercero, Partha Sarkar, Thomas H. Etsell
Summary: The electrochemical performance and stability of infiltrated praseodymium nickelate (PNO) as the cathode for solid oxide fuel cell (SOFC) applications was studied. The results showed that PNO infiltrated into gadolinium-doped ceria (GDC) scaffolds improved the oxygen reduction reaction and transformed into a phase with higher electrical conductivity and thermal stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
N. Manjunath, K. Santhy, B. Rajasekaran
Summary: A new approach using in-situ high-temperature X-ray diffraction (HT-XRD) was adopted to evaluate thermal mismatch induced by thermal expansion in substrate-coating contact pairs. The study investigated an atmospheric plasma sprayed (APS) Mn1.0Co1.9Fe0.1O4 (MCF) coating on Crofer 22 APU steel interconnect. In-situ HT-XRD was performed for both the substrate and coating from 25°C to 900°C, recording diffraction data to obtain lattice parameters and strain as a function of temperature. The findings showed that the coefficient of thermal expansion (CTE) of the MCF coating was slightly higher than the steel substrate, with no significant thermal expansion mismatch observed until 700°C. The increasing lattice strain indicated a strain-induced phase transformation of the MCF coating with temperature, supporting the self-healing phenomenon. The study discussed the merits of in-situ HT-XRD as a tool for optimizing operating temperature and measuring thermal mismatch in solid oxide fuel cell (SOFC) stacks.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Peiyi Lin, Xi Xu, Shoufu Yu, Yanru Yin, Martin Andersson, Lei Bi
Summary: The mismatch of the coefficients of thermal expansion between cathode and electrolyte is one of the challenges for high-performance proton-conducting solid oxide fuel cells. This study introduces the negative thermal expansion component YMO on the cathode to overcome this problem and improves cell performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Ceramics
Lulu Xie, Jianchao Lin, Xiaokang Zhong, Buke Dong, Rui Wang, Xiaoguang Zhu, Peng Tong, Wenhai Song, Yuping Sun
Summary: Negative thermal expansion (NTE) materials can be used to suppress thermal expansion and create composites with zero thermal expansion (ZTE). The composite of modified Cu2P2O7 and 2024Al exhibits ZTE effect, high thermal conductivity, and good machinability, indicating potential applications in high-precision electronics and optics.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Yongxiao Zhou, Chang Zhou, Yiming Wu, Qiqi Zhao, Linlin Fu, Chunyu Yu, Qiang Zhang, Gaohui Wu
Summary: In this study, multiphase Mn3Zn1-xSnxN (MnZnSnN) materials were used to inhibit the positive thermal expansion of AlSi, resulting in the development of a composite material mMnZnSnN/AlSi with near-zero thermal expansion and high thermal conductivity. The composite material exhibited near-zero thermal expansion in a wide temperature range, along with high thermal conductivity and high mechanical properties.
CERAMICS INTERNATIONAL
(2023)
Review
Engineering, Electrical & Electronic
Manojkumar Lokanathan, Palash Acharya, Abdelhamid Ouroua, Shannon M. Strank, Robert E. Hebner, Vaibhav Bahadur
Summary: Dielectric materials with high thermal conductivity have been the focus of research for enhancing performance in electronics packaging and thermal management. Recent developments in nanocomposite dielectric materials have shown promising results, but the assessment of their practical applications requires consideration of various thermal, mechanical, and electrical properties in addition to high TC.
PROCEEDINGS OF THE IEEE
(2021)
Article
Chemistry, Physical
Jinghe Bai, Zhiying Han, Bu Lv, Xu Chen, Xiaofei Zhu, Defeng Zhou
Summary: BSFC cathode material was prepared using electrospinning and sol-gel methods, and the effect of sintering temperature on its properties was investigated. The results showed that low-temperature calcination improved the structure and performance of the fibers, with BSFC-F800 exhibiting lower resistance and higher power density at 700 degrees Celsius.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Jun Zhang, Christian Lenser, Niklas Russner, Andre Weber, Norbert H. Menzler, Olivier Guillon
Summary: This article reports on the fabrication of a cost-effective anode-supported solid oxide fuel cell (SOFC) using gadolinia-doped ceria (GDC) as the electrolyte. The results show that the cell exhibits low ohmic resistance and high power density at intermediate temperature, indicating its great potential for commercial applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Nuclear Science & Technology
Chiranjit Nandi, Santu Kaity, Dheeraj Jain, V. Grover, Amrit Prakash, P. G. Behere
Summary: The study demonstrated that the addition of MgO can improve the thermal conductivity of zirconia-based materials, making them potential target materials for minor actinides transmutation. By investigating the phase characterization and thermophysical properties of neodymium-substituted zirconia and its composites with MgO, the research provided valuable insights into the development of efficient target materials for nuclear applications.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Chenkai Qu, Lin Chen, Liang Lv, Yuncheng Wang, Xiaolan Ji, Haitao Yun, Chaoqun Su, Jing Feng
Summary: In this study, (Gd1-xYx)TaO4 ceramics were synthesized by solid-phase synthesis reaction and their properties were optimized by adjusting the ratio of Gd/Y. The ceramics exhibited low high-temperature thermal conductivity and high phase transition temperature, with thermal expansion coefficients comparable to yttria-stabilized zirconia. Controlling preferred orientation can minimize the thermal expansion mismatch when (Gd1-xYx)TaO4 coatings are used as thermal barrier coatings on different substrates.
JOURNAL OF ADVANCED CERAMICS
(2022)
Article
Materials Science, Ceramics
Aydan Gedik, Jonas Hesse, Stephan Kabelac
Summary: This study presents an easy applicable method for estimating the thermal conductivity of oxide ceramic samples in a high-temperature SOFC/SOEC system. Experimental investigation establishes a thermal conductivity map for various oxide ceramics in the temperature range of 700-900 degrees C. The method provides a rough estimation of thermal conductivity, with good agreement for 8YSZ compared to literature values.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
K. H. Tan, H. A. Rahman, M. S. Azami, U. A. Yusop, N. A. Baharuddin, M. I. Nor Ma'arof
Summary: This paper presents the development and characterization of a new composite cathode material BSCF-SDCC for low-temperature solid oxide fuel cell cathode application. The BSCF-SDCC composite cathode demonstrated excellent microstructural, chemical, and electrochemical properties. The composite cathode exhibited low polarization resistance and high conductivity, making it a promising candidate for low-temperature solid oxide fuel cell cathodes.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Chemical
Michele Gibelli, Giulio Cordaro, Alessandro Donazzi
Summary: In this study, symmetric electrolyte-supported YSZ cells infiltrated with LSF were prepared, characterized, and tested in the oxygen reduction reaction. The effects of calcination temperature and precursors load on the ORR activity were investigated, with optimal performance achieved at 750 degrees C and with LSF loads between 20% and 40%. Equivalent circuit analysis of the EIS results indicated that the reactivity at the LSF/gas interface is rate-determining.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Chemical
Mahesh S. Jadhav, Disna Sahane, Amit Verma, Sheela Singh
Summary: This study investigates the thermal stability and thermal expansion behavior of a dual-phase FeCoCrNi2Al HEA prepared by Mechanical Activated Synthesis and consolidated by hot pressing. The results show that the alloy remains stable at 1000 degrees C, with a linear increase in the coefficient of thermal expansion. A third-order polynomial equation was fitted to the experimental data for predicting the CTE of the alloy.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
D. Yu Kovalev, N. Yu Khomenko, S. P. Shilkin
Summary: The research investigated the thermal expansion of nano- and microcrystalline TiB2 using high-temperature X-ray diffraction, finding that the thermal expansion coefficient of nanocrystalline TiB2 is temperature-independent while that of microcrystalline TiB2 varies with temperature. This study has implications for the thermal expansion properties of TiB2.
CERAMICS INTERNATIONAL
(2022)
