Lithium (Li) metal solid-state batteries feature high energy density and improved safety and thus are recognized as promising alternatives to traditional Li-ion batteries. In practice, using Li metal anodes remains challenging because of the lack of a superionic solid electrolyte that has good stability against reduction decomposition at the anode side. Here, we propose a new electrolyte design with an antistructure (compared to conventional inorganic structures) to achieve intrinsic thermodynamic stability with a Li metal anode.
View Article and Find Full Text PDFSimultaneous study of magnetic and electrocatalytic properties of cobaltites under extreme conditions expands the understanding of physical and chemical processes proceeding in them with the possibility of their further practical application. Therefore, LaSrCoO (LSCO) nanopowders were synthesized at different annealing temperatures = 850-900 °C, and their multifunctional properties were studied comprehensively. As increases, the rhombohedral perovskite structure of the LSCO becomes more single-phase, whereas the average particle size and dispersion grow.
View Article and Find Full Text PDFPartial substitution of V by other transition metals in Na V (PO ) (NVP) can improve the electrochemical performance of NVP as a cathode for sodium-ion batteries (SIBs). Herein, phosphate Na-V-Mn-Ni-containing composites based on NASICON (Natrium Super Ionic Conductor)-type structure have been fabricated by sol-gel method. The synchrotron-based X-ray study, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) studies show that manganese/nickel combinations successfully substitute the vanadium in its site within certain limits.
View Article and Find Full Text PDFUkraine is actively denouncing and abandoning its Soviet legacy, with the legal process of decommunization being at the forefront of this process. However, despite Ukraine's ongoing judiciary reformation process amplified by the signing of the Association Agreement between Ukraine and the European Union, Ukraine's legal system still contains inherited Soviet legal deficiencies that allow for human rights violations. Some of the most glaring deficiencies relate to the rules and regulations for assigning and conducting forensic psychiatric examinations in cases of administrative offenses.
View Article and Find Full Text PDFJ Psychosoc Rehabil Ment Health
September 2022
Individual Placement and Support (IPS) is an evidence-based supported employment program that helps people with severe mental illness to achieve steady, meaningful employment in competitive mainstream jobs. The purpose of this study is to investigate the impact of Covid-19 restrictions on IPS service delivery in Northern Norway between March and October 2020. In Norway, IPS is in the early stages of full-scale implementation and is therefore potentially sensitive to external stressors such as the Covid-19 pandemic.
View Article and Find Full Text PDFProspects for the use of manganites in various areas of modern technologies require comprehensive studies of their physical and chemical properties. LaMnO (LMO) ceramics have been synthesized at an annealing temperature of 1150 °C with further post-annealing at 1250, 1350, and 1450 °C. As increases, the structure symmetry changes, and both the crystallite size and chemical defects increase.
View Article and Find Full Text PDFThe role of the Individual Placement and Support (IPS) employment specialist is a new type of occupation within mental healthcare. High turnover among employment specialists necessitates improvement in their recruitment and retention. One element that impacts retention is job satisfaction.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
December 2021
Single crystals of the langbeinite-type phosphates KNaTiFe(PO) and KNaTiFe(PO) were grown by crystallization from high-temperature self-fluxes in the system NaO-KO-PO-TiO-FeO using fixed molar ratios of (Na+K):P = 1.0, Ti:P = 0.20 and Na:K = 1.
View Article and Find Full Text PDFPhotocatalytic water disinfection has emerged as a promising approach for water purification. However, exploring efficient and rapid visible light driven materials for photocatalytic bacterial inactivation is still a challenging problem. Herein, red phosphorus/titanium oxide (TiO@RP) nanofibers were developed for effective water disinfection by a vacuum ampoule strategy.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
October 2020
Polycrystalline potassium nickel(II) hafnium(IV) tris-(orthophosphate), a langbeinite-type phosphate, was synthesized by a solid-state method. The three-dimensional framework of the title compound is built up from two types of [O] octa-hedra [the sites are occupied by Hf:Ni in ratios of 0.754 (8):0.
View Article and Find Full Text PDFThe evolution of high-performance and stable electrode materials for supercapacitors plays a vital role in the next generation of energy storage devices. In this work we present a simple method for preparing Bi(nanoparticles)/CNx(nanosheets) nanocomposites as electrode materials for supercapacitors, which were synthesized by thermally treating bismuth citrate and urea at 550-700 °C under an Ar atmosphere. According to physicochemical studies (XRD, SEM, TG-DTA, XPS, FTIR, and BET), a "smeared" bismuth formation or the formation of nanoparticles on the CNx surface of interwoven 2D-nanosheets at different calcination temperatures was observed.
View Article and Find Full Text PDFThere is wide interest in developing efficient, robust and low-cost electrode materials for the electrolysis of water to produce clean hydrogen fuel. It is especially important to improve the performance and durability of electrocatalysts for the OER. Here we have shown that the transformation of nanoparticle (n-NNP) and crystalline (c-NNP) forms of mixed phosphate Na4Ni3(PO4)2P2O7 in highly alkaline solutions occurs along various routes and provokes the generation of 2D Ni(OH)2 nanosheets or stable core(phosphate)-shell(Ni(OH)2) particles, respectively.
View Article and Find Full Text PDFManganites are multifunctional materials which are widely used in both technology and devices. In this article, new prospects of their use as nanoparticles for various types of applications are demonstrated. For that, the ferromagnetic nanopowder of LaSrMnO has been synthesized by the sol-gel method with a subsequent annealing at 700-900 °C.
View Article and Find Full Text PDFThe photoelectrochemical properties of scheelite-related MBiVMoO (M = Ca, Sr, x = 0.1 to 0.9) solid solutions deposited on conductive glass (coated with SnO, F-doped) have been investigated as photoanodes in photoelectrochemical (PEC) water splitting.
View Article and Find Full Text PDFIn this work, the hierarchical tin oxide nanoflowers have been successfully synthesized via a simple hydrothermal method followed by calcination. The as-obtained samples were investigated as a kind of gas sensing material candidate for methanol. A series of examinations has been performed to explore the structure, morphology, element composition, and gas sensing performance of as-synthesized product.
View Article and Find Full Text PDFBull Exp Biol Med
September 2013
An integrative systemic model of pharmacological reaction to a phytopreparation was created as a result of conceptual structurization of facts and formalization of causal relations. The use of the new methodological approach to the choice, primary screening, and profound studies of plants for prospective addition thereof to the list of officinal medicinal plants was studied. Use of modern information technologies makes it possible to minimize the labor and time consumption and to carry out automated search, studies of new plant objects, and creation on this base of drugs with scientifically valid therapeutic efficiency.
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