Article
Chemistry, Physical
Pengfei Zhou, Kaitong Sun, Shunping Ji, Zirui Zhao, Ying Fu, Junchao Xia, Si Wu, Yinghao Zhu, Kwun Nam Hui, Hai-Feng Li
Summary: As a typical solid-state electrolyte, Na1+xZr2SixP3-xO12 NASICONs provide a platform for solid-state batteries with higher safety and energy densities. Improving ionic conductivity and reducing interfacial resistance between electrolytes and cathode materials are crucial for higher-efficiency solid-state batteries, which usually require high craftsmanship and high-pressure equipment. This study introduces an effective additive, MgF2, in synthesizing NASICONs, resulting in electrolytes with improved performance and fewer defects.
MATERIALS TODAY ENERGY
(2023)
Article
Optics
K. V. Zotov, I. V. Grischenko, A. V. Konyashkin, O. A. Ryabushkin
Summary: We have proposed a method for measuring the low optical absorption coefficient of piezoelectric materials based on piezoelectric resonance laser calorimetry (PRLC). An RF oscillator circuit is used to track the piezoelectric resonance frequency during laser irradiation. The optical absorption coefficient of lithium triborate crystal under high-power IR laser irradiation was measured using the oscillator circuit and the conventional PRLC technique.
Article
Chemistry, Physical
Jannick Guschlbauer, Leszek Niedzicki, Litwin Jacob, Edyta Rzeszotarska, Damian Pociecha, Piotr Kaszynski
Summary: A new approach to anisotropic liquid electrolytes is explored using a non-ionic liquid crystalline host doped with a lithium salt. The concentration of the ionic additives does not significantly affect the stability of the mesophase, but expands the ion conducting channels. The conductivity and activation energy of the electrolyte vary with temperature and lithium ion concentration.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Multidisciplinary
Lei Zhang, Haiqi Gao, Shijun Xiao, Jinyu Li, Tianli Ma, Qian Wang, Wen Liu, Shi Wang
Summary: In this study, a composite solid-state polymer electrolyte based on ceramic nanowires was prepared through scandium-initiated in-situ ring-opening polymerization. The electrolyte exhibits good ionic conductivity and low interfacial resistance, enabling good interfacial contact between the components of the solid-state cells. The in-situ polymerization method used in this study provides a promising direction for advancing the development of high-performance CSEs.
ACS MATERIALS LETTERS
(2022)
Article
Materials Science, Ceramics
Alberto Lopez-Grande, Rajesh Dagupati, Pedro Galan del Sastre, Francisco Munoz
Summary: This study investigated the ionic conductivity and structure of lithium phosphate glasses by employing thermodynamic approaches and models such as the associated solutions model, weak electrolyte model, and Anderson and Stuart model. Results showed that these models could accurately predict experimental data, indicating their usefulness in understanding the properties of glasses.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
O. Kovalchuk, T. M. Kovalchuk, N. Tomasovicova, M. Timko, K. Zakutanska, D. Miakota, P. Kopcansky, O. F. Shevchuk, Y. Garbovskiy
Summary: Dispersing nanomaterials in liquid crystals can produce advanced materials with multifunctionality and tunability. The electrical and dielectric properties of liquid crystals are influenced by both cell thickness and nanoparticle concentration. The dielectric permittivity can be tuned by changing the nanoparticle concentration, while the electrical conductivity depends on both the cell thickness and nanoparticle concentration.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
S. A. Hashmi, Md. Yasir Bhat
Summary: Flexible and quasi-solid-state gel polymer electrolytes (GPEs) comprising plastic crystals have emerged as a new class of materials for energy storage applications. This study presents a novel composition of GPEs for supercapacitors, which consists of a flexible matrix of non-ionic plastic crystal and organic-ionic plastic crystal immobilized in a polymer. The GPE films demonstrate high ionic conductivity and wide electrochemical stability window, making them attractive as potential electrolytes for supercapacitors. The addition of Li-salt further improves the performance of supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Biochemistry & Molecular Biology
Viorel Circu, Constantin P. P. Ganea, Mihail Secu, Doina Manaila-Maximean, George Catalin Marinescu, Roua Gabriela Popescu, Iuliana Pasuk
Summary: Two neutral copper(I) halide complexes were prepared using benzoylthiourea (BTU) ligand in ethanol. These complexes displayed interesting properties such as 2D supramolecular structures, liquid crystalline behavior, emission, and 1D ionic conduction. The chemical structure was determined through various spectroscopic techniques while the mesomorphic behavior was analyzed using DSC, POM, and XRD. The complexes exhibited a hexagonal columnar mesophase over a wide temperature range and showed solid-state emission with high quantum yields. The liquid crystal phases also facilitated anhydrous proton conduction provided by hydrogen-bonding networks.
Article
Multidisciplinary Sciences
Daiwei Wang, Li-Ji Jhang, Rong Kou, Meng Liao, Shiyao Zheng, Heng Jiang, Pei Shi, Guo-Xing Li, Kui Meng, Donghai Wang
Summary: This paper proposes a low-density inorganic solid-state electrolyte to improve the sulfur utilization and performance of solid-state lithium-sulfur batteries.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Divya Vijayan, Annamma John, Jijimon K. Thomas, Sam Solomon
Summary: The synthesis and characterization of Terbium Samarium Zirconate (TbSmZr2O7) is reported for the first time. XRD analysis and Raman spectroscopy revealed that the synthesized powder and sintered sample of TbSmZr2O7 have a defect-fluorite structure with Fm3m space group. TEM analysis showed that the powder particles have a size range between 3 nm and 9 nm. TbSmZr2O7 exhibits photoluminescence with excitation bands at 270 nm and 313 nm and emission bands at 364 nm and 400 nm, indicating an indirect allowed mechanism of optical transition.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Nianqiao Liu, Wei Zheng, Ruijia Sun, Xiuling Li, Xiaoyin Xie, Liangling Wang, Yuhai Zhang
Summary: This study activated dual-band emission in the visible and NIR region through a co-doping strategy, boosting the total photoluminescence quantum yield of both bands. The observation of long-lasting afterglow and photochromism in the NIR band was significant, as well as the potential application of transparent crystals in designing a light-storage battery free of reabsorption.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Physical
Yue Huang, Ruiming Qiu, Wenchao Lian, Libin Lei, Tong Liu, Jihao Zhang, Yao Wang, Jianping Liu, Jin Huang, Fanglin Chen
Summary: This review summarizes five methods for determining the electrical conduction properties of mixed ionic-electronic conducting (MIEC) oxides and discusses their modifications considering electrode polarization and operation conditions. The application of these methods in assessing the conduction properties of triple ionic-electronic conducting (TIEC) oxides is highlighted, and the reliability and applicability of these methods are elaborated and compared.
JOURNAL OF POWER SOURCES
(2022)
Article
Physics, Applied
Tingfang Yan, Songyi Han, Xiaomeng Wu, Di Jia, Yuhua Chen, Wensheng Tian, Yongmin Wu, Lei Zhu, Weiping Tang
Summary: This study demonstrates that the ultrathin interfacial layer composed of PEO and EC is an effective approach to enhance the performance of solid-state batteries, by reducing interfacial impedance, improving stability, and facilitating the formation of SEI.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Sylwia Ciastek-Iskrzycka, Jacek Szczytko, Hirosato Monobe, Damian Pociecha, Marcin Jasinski, Piotr Kaszynski
Summary: A series of bent-core paramagnetic ionic liquid crystals containing the N-methylimidazolium group were prepared and their mesogenic, magnetic, and ion conductive properties were investigated. The ion pairs form fluid smectic phases above 100 degrees C, with ion conductivity ranging from 10(-5) to 10(-8) S cm(-1). Magnetic susceptibility measurements revealed liquid-like molecular arrangement in the paramagnetic layers.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Erik van Heumen, Xuanbo Feng, Silvia Cassanelli, Linda Neubrand, Lennart de Jager, Maarten Berben, Yingkai Huang, Takeshi Kondo, Tsunehiro Takeuchi, Jan Zaanen
Summary: Unlocking the mystery of the strange metal state has become a focal point of high-Tc research. This state represents a novel phase of matter and has been detected using various probes. Our optical data of the low-Tc cuprate superconductor provides insights into this phase and shows that the strange metal signatures persist throughout the phase diagram. The temperature dependence of the optical conductivity is determined by the Drude parameters.
Article
Materials Science, Multidisciplinary
Dmitrii Semenok, Ivan A. Troyan, Anna G. Ivanova, Alexander G. Kvashnin, Ivan A. Kruglov, Michael Hanfland, Andrey Sadakov, Oleg A. Sobolevskiy, Kirill S. Pervakov, Igor S. Lyubutin, Konstantin Glazyrin, Nico Giordano, Denis N. Karimov, Alexander L. Vasiliev, Ryosuke Akashi, Vladimir M. Pudalov, Artem R. Oganov
Summary: Through high-pressure synthesis, a series of lanthanum-yttrium ternary hydrides were discovered, including novel compounds such as cubic hexahydride (La,Y)H6 and decahydrides (La,Y) H-10 with high critical temperature and magnetic field. The critical current density in (La,Y)H-10 is comparable to that of commercial superconducting wires. These findings represent the first examples of ternary high-Tc superconducting hydrides and demonstrate a new method for stabilizing hydrides.
Article
Crystallography
Denis N. Karimov, Dmitry S. Lisovenko, Anna G. Ivanova, Vadim V. Grebenev, Pavel A. Popov, Natalya L. Sizova
Summary: Bulk c-oriented CeF3 single crystals were successfully grown using the vertical Bridgman technique in a fluorinating atmosphere. The anisotropy of mechanical, thermal, and electrophysical properties were studied for the first time, with maximum values observed in the [0001] direction. The Vickers and Berkovich microhardnesses for different crystallographic planes were investigated, showing higher values for Berkovich and a decrease with increasing load for the hardest plane.
Article
Crystallography
Irina I. Buchinskaya, Denis N. Karimov, Nikolay I. Sorokin
Summary: The study investigates the concentration dependence of electrical conductivity in La1-yBayF3-y single crystals, revealing a refined composition of the ionic conductivity maximum for solid electrolytes. The analysis of electrophysical data for tysonite-type solid electrolytes suggests a weak influence of ionic radii on the maximum conductivity composition.
Article
Crystallography
N. Sorokin, D. N. Karimov, N. A. Ivanovskaya
Summary: Crystals of fluorite solid solution Sr1 - xTbxF2 + (x) were grown using the Bridgman technique from melts with initial compositions x(0) = 0.05, 0.12, and 0.15. The distribution of components along the crystal length was studied, and effective impurity-distribution coefficients were calculated within the Pfann model. The position of the temperature maximum in the melting curves of the solid solution was refined, demonstrating the applicability of the developed technique for nondestructive control of crystal composition.
CRYSTALLOGRAPHY REPORTS
(2021)
Article
Crystallography
N. Sorokin, A. E. Angervaks, P. P. Fedorov
Summary: The study focused on the influence of additive coloring on the electrical conductivity of CaF2 crystals used in photolithography optics, showing a significant increase in crystal conductivity after coloring due to mobile anion vacancies. Ionic conductivity reached 1.5 x 10(-7) S/cm at 573 K, exceeding the intrinsic electrical conductivity of the initial crystal by a factor of 2 x 10(3).
CRYSTALLOGRAPHY REPORTS
(2021)
Article
Chemistry, Inorganic & Nuclear
Victoria G. Grossman, Maxim S. Molokeev, Jibzema G. Bazarova, Bair G. Bazarov, Nikolay Sorokin
Summary: Thallium scandium hafnium molybdate and thallium scandium zirconium molybdate crystallize in trigonal symmetry with the space group R (3) over barc. The crystal structures were obtained by Rietveld method, and the ionic conductivities were measured at different temperatures. The results showed that the molybdates have different ionic conductivities at 773K, with activation energies of 0.8 eV and 0.3 eV respectively.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Crystallography
Aleksander V. Koshelev, Natalia A. Arkharova, Kirill V. Khaydukov, Mir Saeed Seyed Dorraji, Denis N. Karimov, Vera V. Klechkovskaya
Summary: BaY2F8 nanoparticles doped with Yb3+ and Er3+ ions were successfully synthesized by high-energy ball-milling. These nanoparticles have great potential in nanophotonics and biotechnology.
Article
Chemistry, Inorganic & Nuclear
B. P. Sobolev
Summary: The full quasi-system (QS), composed of 15 rare earth element RF3 combinations, is a useful tool for studying the chemical interactions and properties of rare earth trifluorides.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Physical
Uygun V. Valiev, Denis N. Karimov, Chong-Geng Ma, Odiljon Z. Sultonov, Vasiliy O. Pelenovich
Summary: This study investigates the optical and magneto-optical characteristics of KTb3F10 crystals in the transition region of D-5(4) -> F-7(6) electron configuration. The constructed optical transition models and determined energy levels of Stark sublevels shed light on the behavior of Tb3+ ions within the crystal environment. The experimental results are in good agreement with theoretical predictions, revealing the spectral features of the Tb3+ ion multiplets.
Article
Materials Science, Multidisciplinary
David Vojna, Denis N. Karimov, Anna G. Ivanova, Pavel A. Popov, Hikaru Kumai, Ryo Yasuhara, Ondrej Slezak, Martin Smrz, Tomas Mocek
Summary: The latest research emphasizes the advantages of using crystalline media with negative optical anisotropy parameter (OAP) for Faraday devices. These media eliminate the degrading impact of thermal-stress-induced birefringence in high power light operations. The successful growth of OAP-negative fluoride crystals (KDF and NDF) and their material properties have been characterized, demonstrating the transparency at mid-IR wavelengths and sufficient Verdet constant for practical implementation.
Article
Materials Science, Composites
Irina I. Buchinskaya, Natalia A. Arkharova, Anna G. Ivanova, Nikolay I. Sorokin, Denis N. Karimov
Summary: Multiphase fluoride polycrystalline eutectics pRF(3) x qMF(2) were synthesized from the MF2-RF3 binary systems and studied for their phase composition, morphology, and fluorine ionic conductivity. The eutectic composites consist of saturated fluorite-type solid solutions and tysonite-type ones with microsized growth blocks and fine lamellar structure. The ionic conductivity values of these composites are determined by the phase composition and reach 10(-3)-10(-2) S/cm at 500 K.
JOURNAL OF COMPOSITES SCIENCE
(2023)
Article
Physics, Condensed Matter
Irina I. Buchinskaya, Ivan O. Goryachuk, Nikolay I. Sorokin, Victor I. Sokolov, Denis N. Karimov
Summary: Crystals based on alkaline earth metal difluorides were grown from melt using the vertical directional crystallization technique, expanding the range of optical matrices. These crystals exhibit various composition-dependent optical and electrical properties, making them potentially useful for high-density optical materials and low-temperature ionic conductors.
Article
Chemistry, Multidisciplinary
Aleksandr V. Koshelev, Vadim V. Grebenev, Natalia A. Arkharova, Andrey A. Shiryaev, Denis N. Karimov
Summary: A study demonstrates the fabrication of photoluminescent fluoride nanoparticles NaYF4 doped with rare-earth ions using high-energy ball milling. The raw materials used were melt-grown bulk cubic crystal Na0.40Y0.480Yb0.108Er0.012F2.2 and composite Na0.55Y0.360Yb0.081Er0.009F2.10. After milling, single-phase β-NaYF4:Yb,Er nanoparticles with intense green fluorescence were produced, showing potential applications in biomedicine and nanophotonics. The optimized methodology of high-energy milling has great potential for scalable and reproducible production of β-NaYF4 nanoparticles for industrial and scientific applications.
Article
Chemistry, Multidisciplinary
Boris P. Sobolev, Elena A. Sulyanova
Summary: This paper discusses the classification and polymorphic transformation of PmF3 in LnF(3), and through modeling and experimental research, reveals the hidden polymorphic transformation and giant negative thermal expansion effect of PmF3 in SS B LnF(3).
Article
Chemistry, Multidisciplinary
Elena A. Sulyanova, Boris P. Sobolev
Summary: A universal cluster model (UCM) of a defect structure in nanostructured nonstoichiometric crystals (NNCs) was developed and applied to fluorite-type NNCs. The UCM provides insights into the relationship between cluster structure and properties of NNCs, and has potential applications in quantum electronics and optics.
