Article
Chemistry, Physical
Andoni Choya, Beatriz de Rivas, Juan Ramon Gonzalez-Velasco, Jose Ignacio Gutierrez-Ortiz, Ruben Lopez-Fonseca
Summary: The study focuses on supported bimetallic Co-Ni catalysts for methane oxidation, showing that simultaneous incorporation of nickel and cobalt enhances redox properties and increases active lattice oxygen species, leading to improved reaction rates. The most active catalyst exhibited stability during prolonged operation but irreversible deactivation in the presence of water vapor.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Chris M. Marin, Eric J. Popczun, Thuy-Duong Nguyen-Phan, De Nyago Tafen, Dominic Alfonso, Iradwikanari Waluyo, Adrian Hunt, Douglas R. Kauffman
Summary: The dry reforming of methane (DRM) is a promising process for generating syngas while consuming CO2, but industrial applications have been limited due to the high temperatures required to prevent coke formation. Microwave-assisted DRM (MW-DRM) is a promising approach that can utilize excess renewable electrons to rapidly and selectively heat the catalyst bed. Catalyst doping studies have shown that the addition of oxophilic transition metals prevents over-reduction and stabilizes the perovskitic phases under reaction conditions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Andoni Choya, Beatriz de Rivas, Jose Ignacio Gutierrez-Ortiz, Ruben Lopez-Fonseca
Summary: This study found that bimetallic Ni catalysts exhibited better catalytic performance in the complete oxidation of methane compared to monometallic catalysts, mainly due to the good dispersion of Ni on the surface of Co-Al2O3 samples, facilitating the insertion of Ni2+ ions and increase in Co3+ species. The 5Ni/25Co catalyst showed the best performance, reducing the T50 value by 25 degrees C compared to monometallic catalysts.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Analytical
A. L. Yan, W. D. Wang, B. Q. Wang, X. C. Wang, J. P. Cheng
Summary: In this study, a new electrode material was designed and fabricated by depositing core-shell structured Co3O4@NiCo2O4 nanowire hybrid films on nickel foam. The hybrid film exhibited higher specific capacitance and smaller resistance, indicating great potential for energy storage.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Jun Yang, Lu Chen, Dongmin Cai, Hua Zhang, Jianxin Wang, Wanbing Guan
Summary: This study investigated the Sr segregation behavior in LSCF under compression to simulate the operating condition of LSCF electrode in an assembled SOC stack. The compression load was found to suppress the formation of SrO on the surface of LSCF, improving durability significantly. Furthermore, the type of materials (YSZ, GDC, and Pt) in contact with LSCF also influenced Sr segregation in LSCF, with compression inducing more SrO formation when in contact with YSZ compared to GDC and Pt.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Kai Guo, Fan Yang, Tianyao Weng, Jianguo Chen, Jiye Zhang, Jun Luo, Han Li, Guanghui Rao, Jingtai Zhao
Summary: Doping SrTiO3 with La and Sc can change its electrical transport properties and significantly increase the power factor. Additionally, excess Sc can suppress multifrequency phonon transport, leading to lower thermal conductivity and further optimization of thermal transport properties.
Article
Multidisciplinary Sciences
Matthias T. Agne, Shashwat Anand, G. Jeffrey Snyder
Summary: Atomic vibrations, represented by phonons, play a foundational role in describing the thermal behavior of materials. This study shows that the kinetic energy of atoms in a solid produces a phonon pressure, which leads to thermal expansion. Even harmonic solids exhibit some degree of anharmonicity. The harmonic estimation of the Gruneisen parameter is demonstrated, and a high-throughput lattice thermal conductivity model is developed based on this understanding.
Article
Materials Science, Ceramics
Yuqiao Zhang, Hai Jun Cho, Kenyu Sugo, Masashi Mikami, Sungmin Woo, Myung-Chul Jung, Yao-Hua Zhuang, Bin Feng, Yu-Miin Sheu, Woosuck Shin, Woo Seok Choi, Myung Joon Han, Yuichi Ikuhara, Hiromichi Ohta
Summary: The study shows that the thermal conductivity of electron-doped SrTiO3 is lower than assumed, with the highest ZT exceeding 0.1 at room temperature. The impact of carrier concentration on thermal conductivity varies in different solid solutions, providing insights for the future design of electron-doped SrTiO3-based thermoelectric materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Ming Liu, Yuxin Sun, Jianbo Zhu, Chun Li, Fengkai Guo, Zihang Liu, Muchun Guo, Yuke Zhu, Xingyan Dong, Zhenhua Ge, Qian Zhang, Wei Cai, Jiehe Sui
Summary: This research shows that lattice strain can be used to adjust the defect concentration and optimize the electrical transport performance. Theoretical calculations demonstrate that lattice strain can effectively increase the formation energy of Ge vacancies, reducing carrier scattering and improving carrier mobility. Experimental results confirm that lattice strain obtained through high-energy ball milling combined with spark plasma sintering can reduce the concentration of Ge vacancies, leading to high carrier mobility. Additionally, carefully modulating the nominal content of Ge in Ge0.90Sb0.08Te alloy results in a high ZT of 2.0 at 723 K.
Article
Chemistry, Physical
Michal Mosialek, Malgorzata Zimowska, Dzmitry Kharytonau, Anna Komenda, Milosz Gorski, Marcel Krzan
Summary: This study aims to improve the performance of LSM cathodes in the low temperature range by adding YFC. The research found that the polarization resistance of the electrode increases with decreasing operating temperatures, and the LSM1 electrode has the lowest polarization resistance.
Article
Engineering, Environmental
Feng Guo, Jingwei Li, Yibo Zhang, Xiangguang Yang
Summary: A strategy of surface control of spinel by atomic layer deposition (ALD) technology was developed to enhance the water vapor tolerance of Pd/La-NiCo2O4 nanoboxes (NBs). The ALD-modification of lanthanum on the surface of NiCo2O4 NBs inhibited the accumulation of inactive hydroxyl groups/water, improving the Pd/La-NiCo2O4 NBs' water vapor tolerance at low temperatures. The embedding of Pd into the NiCo2O4 lattice significantly enhanced the catalyst activity of Pd/LaNiCo2O4 NBs for methane combustion at low temperatures.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Alexandros Safakas, Vasileios Ch. Kournoutis, Georgios Bampos, Symeon Bebelis
Summary: Perovskites are a promising alternative catalyst for oxidation reactions due to their lower cost and greater thermal stability. Increasing the Co/Fe ratio can enhance the catalytic activity for CO and propane oxidation, under both oxidative and stoichiometric conditions. The increase in Co content facilitates the formation of oxygen vacancies, improving the catalytic performance.
Article
Biochemistry & Molecular Biology
Teng-Hao-Bo Deng, Jie-Qian Chen, Ke-Rui Geng, Antony van der Ent, Ye-Tao Tang, Dian Wen, Xu Wang, Lei Li, Rui-Ying Du, Jean-Louis Morel, Rong-Liang Qiu
Summary: Hyperaccumulators have exceptional phloem translocation capability for heavy metals, with the mobility and accumulation of metals linked to their phloem mobility. The study highlights the importance of phloem translocation on metal accumulation in shoots in hyperaccumulators.
Article
Materials Science, Multidisciplinary
Changjing Fu, Qiang Ma, Qibing Wu, Zaifang Yuan, Zhanqiang Wu, Jun He, Xuewei Li
Summary: In this study, a bifunctional oxygen electrocatalyst based on LSCF was designed and synthesized, which exhibited more surface oxygen vacancies and catalytically active sites for efficient oxygen reduction and evolution reactions. The integration of silver nanoparticles and graphene provided a fast pathway for electron transfer and mass diffusion. The flexible Zn-air battery with Ag/LSCF@graphene as the cathodic catalyst displayed high power density, large specific capacity, and superior charge/discharge stability.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
A. Nikonov, N. B. Pavzderin, V. R. Khrustov, I. Semenova, K. Demidova, K. A. Kuterbekov, K. Zh Bekmyrza, S. N. Nurakov, T. A. Koketay, O. Gyrdasova
Summary: The new cathode materials Pr1-xSrxFe1-yCoyO3 for SOFC were synthesized through a high-temperature method and showed increased chemical activity with higher Sr and Co concentrations, leading to higher polarization resistance when in contact with YSZ electrolyte. However, the interaction with GDC electrolyte was minimal. The thermal expansion of the materials and their conductivity also varied with Sr and Co content.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
B. R. Sudireddy, P. Blennow, K. Agersted, K. V. Hansen, M. B. Mogensen
SOLID STATE IONICS
(2019)
Article
Electrochemistry
X. Sun, P. V. Hendriksen, M. B. Mogensen, M. Chen
Review
Chemistry, Physical
Mogens B. Mogensen
CURRENT OPINION IN ELECTROCHEMISTRY
(2020)
Review
Multidisciplinary Sciences
A. Hauch, R. Kungas, P. Blennow, A. B. Hansen, J. B. Hansen, B. V. Mathiesen, M. B. Mogensen
Article
Electrochemistry
Mogens B. Mogensen, Ming Chen, Henrik Lund Frandsen, Christopher Graves, Anne Hauch, Peter Vang Hendriksen, Torben Jacobsen, Soren Hojgaard Jensen, Theis Loye Skafte, Xiufu Sun
Summary: The degradation mechanism of Ni-YSZ electrodes in SOCs is complex and contradictory, characterized by loss of electrical contact between Ni particles and migration of Ni in the most active part. These issues are significant obstacles to the commercialization of SOC systems.
Article
Chemistry, Physical
Dordije Tripkovic, Jiayue Wang, Rainer Kungas, Mogens Bjerg Mogensen, Bilge Yildiz, Peter Vang Hendriksen
CHEMISTRY OF MATERIALS
(2022)
Review
Chemistry, Physical
Elena Marzia Sala, Nicola Mazzanti, Mogens Bjerg Mogensen, Christodoulos Chatzichristodoulou
Summary: This review article critically discusses the phenomena and mechanisms of CO2 electrochemical reduction over ceria surfaces, and explores the methods to accelerate the reaction steps by tuning ceria properties and defect chemistry. The article summarizes the impact of these factors on the energy landscape of the reaction and carbon deposition suppression, and proposes new directions for further research and optimization of ceria as a highly efficient catalyst.
SOLID STATE IONICS
(2022)
Article
Chemistry, Physical
Theis Loye Skafte, Omid Babaie Rizvandi, Anne Lyck Smitshuysen, Henrik Lund Frandsen, Jens Valdemar Thorvald Hogh, Anne Hauch, Soren Knudsen Kaer, Samuel Simon Araya, Christopher Graves, Mogens Bjerg Mogensen, Soren Hojgaard Jensen
Summary: A novel operation method is proposed to alleviate temperature variations and minimize degradation caused by impurities and nickel migration in SOEC technology. By rapidly switching between electrolysis mode and fuel cell mode, a flat thermal profile is obtained, enabling increased SOEC stack and module size and extended lifetime.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Bartlomiej Lemieszek, Justyna Ignaczak, Bartosz Kamecki, Jakub Karczewski, Mogens Bjerg Mogensen, Sebastian Molin, Piotr Jasinski
Summary: This article presents the electrolytic deposition of thin Rare Earth coatings on Crofer 22 APU stainless steel substrates for high temperature applications. The deposition of coatings based on yttrium, gadolinium, lanthanum, and cerium nitrates is discussed. The high temperature corrosion properties of surface-modified steels were examined using thermogravimetry and electrical resistivity measurements. The results showed that the use of RE element oxide layers reduced the growth of oxide scale, and coatings based on Y and Gd oxides exhibited the best corrosion protection properties. Electrical measurements showed that the surface-modified samples had lower resistance than the uncoated sample.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Elena Marzia Sala, Nicola Mazzanti, Francesco M. Chiabrera, Simone Sanna, Mogens B. Mogensen, Peter V. Hendriksen, Zhongtao Ma, Soren B. Simonsen, Christodoulos Chatzichristodoulou
Summary: Ceria (CeO2) shows great potential in reducing CO2 emissions and developing efficient and durable fuel electrodes for SOECs, due to its promising electrocatalytic properties and ability to tolerate impurities.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Yousef Alizad Farzin, Mogens Bjerg Mogensen, Henrik Lund Frandsen
Summary: Ni migrates from cermet fuel electrodes in SOECs at high overpotentials, prompting interest in alternative electrode materials. Ni-free perovskites with mixed ionic and electronic conductivity are being developed as substitutes for Ni-YSZ- or Ni-CGO-cermet fuel electrodes. However, some perovskite electrodes exhibit poor electrocatalytic activity during steam electrolysis.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Dordije Tripkovic, Rainer Kungas, Mogens Bjerg Mogensen, Peter Vang Hendriksen
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Review
Green & Sustainable Science & Technology
M. B. Mogensen, M. Chen, H. L. Frandsen, C. Graves, J. B. Hansen, K. Hansen, A. Hauch, T. Jacobsen, S. H. Jensen, T. L. Skafte, X. Sun
Article
Chemistry, Physical
Dordije Tripkovic, Rainer Kungas, Mogens Bjerg Mogensen, Peter Vang Hendriksen
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Electrochemistry
Filippo Fenini, Kent Kammer Hansen, Mogens Bjerg Mogensen
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2019)
Article
Chemistry, Inorganic & Nuclear
Caleb J. Bennett, Helen E. A. Brand, Alexander K. L. Yuen, Maria K. Nicholas, Brendan J. Kennedy
Summary: The temperature dependence of the crystal structure of Potassium Hexaiodoplatinate(IV) between 80 and 500 K is studied. Different crystal structures are observed at different temperatures, including monoclinic, tetragonal, and cubic structures. Accurate determination of the structures of K2PtI6 is important for further theoretical and practical research.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Zhuo Zeng, Jiangfu Zheng, Xiaoming Li, Changzheng Fan, Rongying Zeng, Wenqing Tang
Summary: An efficient method for phosphate removal from wastewater is urgently needed due to the environmental issue caused by excessive phosphorus. In this study, calcium aluminum layered double hydroxides (CaAl-LDHs) and six amino acid intercalated calcium aluminum layered double hydroxides (CaAl-amino acid-LDHs) were prepared and compared for their phosphate adsorption performance. L-Aspartic acid intercalated calcium aluminum layered double hydroxides (CaAl-Asp-LDHs) exhibited the highest phosphate adsorption capacity and faster removal rate compared to CaAl-LDHs. The phosphate adsorption mechanism on CaAl-Asp-LDHs involved electrostatic attraction, hydrogen bonds, complexation, and ion exchange. This environmentally friendly material shows promising potential for efficient phosphate removal from aquatic environments.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Rouzbeh Aghaei Hakkak, Thomas Schleid
Summary: The novel guanidinium hydro-closo-borates with [BnHn]2- (n = 10 and 12) anions were successfully synthesized via direct reaction. The crystal structures exhibit hydrogen bonding interactions and have the potential to facilitate H2 generation.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Liqiang Ma, Pengpeng Wei, Jingfang Li, Liye Liang, Guangming Li
Summary: A novel catalyst, H4PVMo2W9O40@rht-MOF-1, was developed using a one-pot hydrothermal method. It exhibited high efficiency and reusability in esterification reactions.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Liudmila A. Gorelova, Valentiva A. Yukhno, Maria G. Krzhizhanovskaya, Oleg S. Vereshchagin
Summary: Two new Ga-Ge disordered feldspar-related compounds were successfully synthesized using melt crystallization methods. Their stability and thermal expansion properties were studied under high-temperature conditions. The results showed that both compounds are stable within the studied temperature range and exhibit anisotropic thermal expansion.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Seifeddine Bdey, Nesrine Boussadoune, Francois Allard, Jacques Huot, Gabriel Antonius, Noura Fakhar Bourguiba, Pedro Nunez
Summary: The structure of a novel arsenate compound Na3Al3(AsO4)4 has been determined using X-ray diffraction. The crystal exhibits a monoclinic space group with suitable pathways for Na+ ion migration. The accuracy of the structural model was confirmed using various validation tools and density functional theory calculations.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Amit Kumar Atri, Ujwal Manhas, Sumit Singh, Irfan Qadir, Shikha Sharma, Preteek Sharma, Devinder Singh
Summary: This study synthesizes new oxygen deficient triple layered Ruddlesden-Popper (RP) phases via sol-gel method and investigates the effects of Cr3+ doping on their structural, optical, magnetic, and photocatalytic properties. The experimental results demonstrate that Cr3+ doping alters the interactions and leads to excellent photocatalytic performance in some phases.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Dat Le Thanh, Amandine Guiet, Emmanuelle Suard, Romain Berthelot
Summary: In this study, FeNb11O29 powder samples were prepared using a microwave-assisted solid-state synthesis method for the first time. The samples obtained rapidly from submicrometric oxide precursors showed enhanced cycling performance, possibly due to the easier ionic diffusion occurring in the smaller particles.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Raimund Ziegler, Felix R. S. Purtscher, Thomas S. Hofer, Gunter Heymann, Hubert Huppertz
Summary: We have successfully synthesized a new tellurium borate crystal under high-pressure and high-temperature conditions. The crystal structure and theoretical calculations have been thoroughly discussed.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Subhendu Jana, Eric A. Gabilondo, Paul A. Maggard
Summary: This study reports the synthesis and characterization of two previously unknown multinary selenides, Ba8Hf2Se11(Se-2) and Ba9Hf3Se14(Se-2), which display unique structures and optoelectronic properties competitive with existing perovskite-type chalcogenides.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Fei Ruan, Chonggui Lei, Fenglong Zhang, Jinxiao Bao, Fen Zhou, Min Xie, Pengfei Xu, Jianquan Gao
Summary: Studying the diffusion properties of hydrogen is important for designing new proton conductors. In the past, the chemical diffusion coefficient of hydrogen in proton conductors was usually obtained through a manual calculation method, resulting in difficulty in controlling the calculation accuracy. To address this issue, a mathematical algorithm and C language computer program were developed to calculate the chemical diffusion coefficient based on Fick's second law and Romberg numerical integral. The algorithm showed high precision and powerful computing function, and has the potential to replace the manual calculation method in calculating the chemical diffusion coefficient for hydrogen in proton conductors.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Deepika Shanubhogue, Suraj Mangavati, Ashok Rao, Ru-Ting Tsao, Yung-Kang Kuo
Summary: In this study, the effect of Y doping at the Sn-site on the structural, electrical, and low-temperature thermoelectric properties of the Cu2SnSe3 system is investigated. Y-doped compounds Cu2Sn1-xYxSe3 show reduced electrical resistivity, enhanced power factor, and decreased thermal conductivity, resulting in higher ZT values.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Wei Hong, Min Qing, Xun He, Lei Wang, Yu Pu, Qiyu Li, Zhimin He, Qin Dong, Rong Li, Xinglong Gou
Summary: This study developed a simple method to prepare SnS2 nanosheets and assembled them with MXene to form SnS2/MXene. The composite material exhibited abundant active sites, superior electron/ion transfer kinetics, and a unique 2D interlayer structure, resulting in high specific capacity, outstanding rate capability, and excellent cycling stability, with potential applications in LIBs.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Heng-Yu Ruan, Xue-Qian Wu, Tian-Yu Zhang, Yi Yuan, Le Wang, Ya-Pan Wu, Qing-Wen Han, Ruan Chi, Dong-Sheng Li
Summary: Two isostructural metalorganic frameworks (MOFs), CTGU-36-Co and CTGU-36-Ni, were synthesized, and CTGU-36-Ni demonstrated high activity as a molecular electrocatalyst for the methanol oxidation reaction.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Rachid Fakhreddine, Ali Ouasri, Abderrahim Aatiq
Summary: This paper reports the synthesis, structure, and spectroscopic studies of three novel metal orthophosphate salts. The structures of these compounds were refined using X-ray powder diffraction data. The infrared and Raman analysis revealed their symmetries and the UV-visible investigation determined their optical properties.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)