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21 Result(s)

within I. A. Stenina Remove this filter Inorganic Chemistry Remove this filter Materials Science, general Remove this filter

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  1. No Access

    Article

    Synthesis of NASICON-Type Lithium Zirconium Phosphate

    The chemical transformations involved in the synthesis of the NASICON-type compound LiZr2(PO4)3 were studied by thermogravimetry and x-ray diffraction. The results demonstrate that, during heat treatment of a 3Zr...

    I. A. Stenina, Yu. A. Velikodnyi, V. A. Ketsko, A. B. Yaroslavtsev in Inorganic Materials (2004)

  2. No Access

    Article

    Ionic conduction in a grafted layer of organosilicate materials based on the mesostructured silicates MCM-41 and SBA-15

    Mesostructured silicate materials with different pore sizes and grafted sulfonic groups have been synthesized and characterized by thermal analysis, IR spectroscopy, and impedance spectroscopy. The results ind...

    I. A. Stenina, I. V. Ponomarenko, A. G. Veresov, S. D. Kirik… in Inorganic Materials (2007)

  3. No Access

    Article

    Synthesis and ionic conductivity of silver magnesium zirconium molybdates

    The silver magnesium zirconium molybdate Ag4Mg2Zr(MoO4), undoped and aliovalently doped with yttrium and aluminum, has been characterized by impedance spectroscopy, X-ray diffraction, and IR spectroscopy. The mat...

    A. A. Il’ina, I. A. Stenina, G. V. Lysanova, A. B. Yaroslavtsev in Inorganic Materials (2009)

  4. No Access

    Article

    Phase transitions of the NASICON-type mixed phosphates LiM2(PO4)3 (M = Ti, Zr) and LiInNb(PO4)3

    The structural phase transitions of LiTi2(PO4)3, LiInNb(PO4)3, and LiZr2(PO4)3 have been studied by X-ray diffraction, impedance spectroscopy, 7Li NMR spectroscopy, and calorimetry. The results indicate that, as ...

    I. Yu. Pinus, A. R. Shaikhlislamova, I. A. Stenina, N. A. Zhuravlev… in Inorganic Materials (2009)

  5. No Access

    Article

    Microstructure and ion transport in Li1 + x Ti2 − x M x (PO4)3 (M = Cr, Fe, Al) NASICON-type materials

    Li1 + x Ti2 − x M x (PO4)3 (M = Cr, Fe, Al) NASICON-type materials have been prepared by the Pechini process and solid-state reactions and charact...

    A. I. Svitan’ko, S. A. Novikova, I. A. Stenina, V. A. Skopets… in Inorganic Materials (2014)

  6. No Access

    Article

    Catalytic properties of composite materials based on mesoporous silica and zirconium hydrogen phosphate

    We have synthesized composite materials based on SBA-15 mesoporous silica and zirconium phosphate. The materials have been characterized by scanning electron microscopy, transmission electron microscopy, induc...

    I. A. Stenina, A. B. Il’in, S. D. Kirik, N. A. Zhilyaeva… in Inorganic Materials (2014)

  7. No Access

    Article

    Synthesis and ionic conductivity of Li4Ti5O12

    Lithium titanate, Li4Ti5O12, has been synthesized by the Pechini process, citrate route, and EDTA-citrate route at various final annealing temperatures. The materials obtained have been characterized by scanning ...

    I. A. Stenina, A. B. Il’in, A. B. Yaroslavtsev in Inorganic Materials (2015)

  8. No Access

    Article

    Effect of particle size on the conductive and electrochemical properties of Li2ZnTi3O8

    We have studied the effect of final annealing temperature on the formation of lithium zinc titanate, its electrical conductivity, and its electrochemical performance. Li2ZnTi3O8 has been shown to form in a wide r...

    P. A. Nikiforova, I. A. Stenina, T. L. Kulova, A. M. Skundin… in Inorganic Materials (2016)

  9. No Access

    Article

    Low- and intermediate-temperature proton-conducting electrolytes

    We consider the main achievements and problems in the field of proton-conducting solid electrolytes. Because of the extremely small proton radius, mechanisms of proton transport differ drastically from those f...

    I. A. Stenina, A. B. Yaroslavtsev in Inorganic Materials (2017)

  10. No Access

    Article

    High-temperature and composite proton-conducting electrolytes

    This paper presents a continuation of a review of research on proton-conducting solid electrolytes. We consider high-temperature proton-conducting materials based on mixed oxides of polyvalent elements whose s...

    I. A. Stenina, A. B. Yaroslavtsev in Inorganic Materials (2017)

  11. No Access

    Article

    Electrochemical properties of Li4Ti5O12/C and Li4Ti5O12/C/Ag nanomaterials

    We have prepared and characterized lithium titanate-based anode materials, Li4Ti5O12/C and Li4Ti5O12/C/Ag, using polyvinylidene fluoride as a carbon source. The formation of such materials has been shown to be ac...

    I. A. Stenina, A. N. Sobolev, A. A. Kuz’mina, T. L. Kulova… in Inorganic Materials (2017)

  12. No Access

    Article

    Surface modification of zirconia with acid groups

    We have studied the effect of surface modification with acids and subsequent heat treatment on the properties of hydrous zirconia. It has been shown that surface modification with phosphate and sulfate groups ...

    D. V. Golubenko, P. A. Yurova, Yu. A. Karavanova, I. A. Stenina in Inorganic Materials (2017)

  13. No Access

    Article

    Synthesis, Structure, IR-Spectroscopic Characterization, and Ionic Conductivity of Mg0.5Zr2(AsO4)x(PO4)3 − x

    Mg0.5Zr2(AsO4)x(PO4)3 − x arsenate phosphates have been prepared by a sol–gel process and characterized by X-ray diffraction, IR spectroscopy, and impedance spectroscopy. The results indicate the formation of a c...

    V. I. Pet’kov, A. S. Shipilov, E. Yu. Borovikova, A. M. Kovalskii… in Inorganic Materials (2018)

  14. No Access

    Article

    Effect of the Carbon Source on the Electrochemical Properties of Li4Ti5O12/C Composites Prepared by Solid-State Synthesis

    Li4Ti5O12/C composite anode materials have been prepared by solid-state reactions using lithium- or titanium-containing reagents (lithium lactate, acetate, and acetylacetonate or titanium oxyacetylacetonate) not ...

    I. A. Stenina, A. N. Sobolev, A. A. Kuz’mina, T. L. Kulova… in Inorganic Materials (2019)

  15. No Access

    Article

    Cathode Materials Based on Lithium Iron Phosphate/PEDOT Composites for Lithium-Ion Batteries

    Composites based on LiFePO4/C and poly(3,4-ethylenedioxythiophene) (LiFePO4/C/PEDOT) have been prepared via in situ oxidative EDOT polymerization or mechanical mixing of LiFePO4/C with presynthesized PEDOT partic...

    V. V. Ozerova, I. A. Stenina, A. A. Kuz’mina, T. L. Kulova… in Inorganic Materials (2020)

  16. No Access

    Article

    Influence of Mechanical Processing and the Procedure Used to Introduce a Carbon Material on the Electrochemical Properties of Li4Ti5O12/C Composites

    Li4Ti5O12/C anode materials of different particle size have been prepared by a sol–gel process, followed by mechanical processing in a planetary mill. Carbon was introduced both by an in situ process and by mecha...

    I. A. Stenina, A. N. Sobolev, A. A. Kuz’mina, T. L. Kulova… in Inorganic Materials (2020)

  17. No Access

    Article

    LiFePO4/Carbon Nanomaterial Composites for Cathodes of High-Power Lithium Ion Batteries

    Using a simple and technological approach, we have fabricated composites based on a lithium iron phosphate (LFP) with the olivine structure and a carbon coating containing 5–10% carbon nanotubes (CNTs) or nano...

    I. A. Stenina, P. V. Minakova, T. L. Kulova, A. V. Desyatov… in Inorganic Materials (2021)

  18. No Access

    Article

    Synthesis and Ionic Conductivity of Lithium Titanium Phosphate-Based Solid Electrolytes

    The processes occurring during the solid-state synthesis of germanium-doped lithium titanium phosphate have been studied. The formation of LiTi2 – xGex(PO4)3 has been shown to proceed through the titanium pyropho...

    E. A. Kurzina, I. A. Stenina, A. Dalvi, A. B. Yaroslavtsev in Inorganic Materials (2021)

  19. No Access

    Article

    Phase Formation and Ionic Conductivity of Na1 + 2xZnxZr2 – x(PO4)3 Phosphates

    Na1 + 2xZnxZr2 – x(PO4)3 phosphates have been prepared by a sol–gel process followed by heat treatment. A limited series (0 ≤ x ≤ 0.4) of solid solutions with the NASICON structure has been obtained in the system...

    V. Yu. Bedin, O. V. Kazachiner, E. A. Asabina, V. I. Pet’kov… in Inorganic Materials (2022)

  20. No Access

    Article

    Effect of High-Molecular-Weight Carbon Sources on the Electrochemical Properties of Li4Ti5O12/C Composite Materials

    Lithium titanate-based (Li4Ti5O12/C) composite anode materials have been synthesized by a sol–gel process with the use of high-molecular-weight compounds (polystyrene, polyethylene glycol, or polyvinylidene fluor...

    I. A. Stenina, A. N. Sobolev, T. L. Kulova, A. B. Yaroslavtsev in Inorganic Materials (2022)

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