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Leonidova ON, Leonidov IA, Patrakeev MV, Samigullina RF. Sodium Ion Transport and Phase Transition in the Vanadate Na3ErV2O8 with Glaserite Type Structure. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622060122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kellerman DG, Tyutyunnik AP, Medvedeva NI, Chufarov AY, Fortes AD, Gibbs AS, Tarakina NV, Kalinkin MO, Zhuravlev NA, Leonidova ON. New Li-Mg phosphates with a 3D framework: experimental and ab initio calculations. Dalton Trans 2020; 49:10069-10083. [PMID: 32658230 DOI: 10.1039/d0dt01963a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new lithium-magnesium phosphates LiMg6(PO4)3(P2O7) and Li(Mg5.62Sc0.19Li0.19)(PO4)3(P2O7) were synthesized by a solid-phase method. Using high-resolution time-of-flight neutron powder diffraction (TOF NPD) and X-ray powder diffraction (XRPD), we established that these phosphates have a Pnma orthorhombic structure with the cell parameters a = 9.14664(5) Å, b = 18.83773(8) Å, c = 8.27450(4) Å, and V = 1425.71(1) Å3 and a = 9.14516(5) Å, b = 18.84222(9) Å, c = 8.28204(4) Å, and V = 1427.12(1) Å3, respectively. The crystal structures can be described by stacking of the [Mg6O18]∞ or [Mg5.62Sc0.19Li0.19O18]∞ wavy layers, which are parallel to the (100) direction and interconnected through PO4 tetrahedra and P2O7 groups to form a 3D-framework. The Li atoms are located in large tunnels formed in a 3D lattice, which contributes to lithium diffusion. AC impedance spectroscopy analysis shows that LiMg6(PO4)3(P2O7) and Li(Mg5.62Sc0.19Li0.19)(PO4)3(P2O7) have a Li ion conductivity of 3.6 × 10-4 S cm-1 and 1.7 × 10-4 S cm-1 at 950 °C, with an activation energy of 1.28 eV and 1.55 eV, respectively. NMR MAS studies confirmed the coexistence of pyro- and orthogroups in the structure of both phases and two lithium positions in Li(Mg5.62Sc0.19Li0.19)(PO4)3(P2O7). The first-principles method was used to study the electronic structure and stability of the two phases. The calculated formation enthalpies demonstrated that Sc is a stabilizing impurity in LiMg6(PO4)3(P2O7), while a strong destabilization of olivine LiMgPO4 is observed upon doping with Sc. This explains the failure to synthesize Sc-doped olivine. The new phosphate LiMg6(PO4)3(P2O7) is a dielectric with a band gap of 5.35 eV, which decreases to 4.85 eV due to the appearance of a localized Sc 3d peak upon doping with Sc. These findings are consistent with the results obtained by UV-Vis spectroscopy. The new phase may be a good optical matrix similar to LiMgPO4.
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Affiliation(s)
- D G Kellerman
- Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, 91, Pervomaiskaya st., 620990 Ekaterinburg, Russia.
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Markov AA, Chesnokov KY, Patrakeev MV, Leonidov IA, Chukin AV, Leonidova ON, Kozhevnikov VL. Oxygen non-stoichiometry and mixed conductivity of La0.5Sr0.5Fe1–x Mn x O3–δ. J Solid State Electrochem 2015. [DOI: 10.1007/s10008-015-3027-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Belik AA, Izumi F, Ikeda T, Lazoryak BI, Morozov VA, Malakho AP, Stefanovich SY, Grebenev VV, Shelmenkova OV, Kamiyama T, Oikawa K, Leonidov IA, Leonidova ON, Davydov SA. Structural Changes and Phase Transitions in Whitlockite-Like Phosphates. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426500212245] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- A. A. Belik
- a Advanced Materials Laboratory , National Institute for Materials Science , 1-1 Namiki, Tsukuba, Ibaraki , 305-0044 , Japan
| | - F. Izumi
- a Advanced Materials Laboratory , National Institute for Materials Science , 1-1 Namiki, Tsukuba, Ibaraki , 305-0044 , Japan
| | - T. Ikeda
- a Advanced Materials Laboratory , National Institute for Materials Science , 1-1 Namiki, Tsukuba, Ibaraki , 305-0044 , Japan
| | - B. I. Lazoryak
- b Department of Chemistry , Moscow State University , Moscow , 119899 , Russia
| | - V. A. Morozov
- b Department of Chemistry , Moscow State University , Moscow , 119899 , Russia
| | - A. P. Malakho
- b Department of Chemistry , Moscow State University , Moscow , 119899 , Russia
| | - S. Yu. Stefanovich
- b Department of Chemistry , Moscow State University , Moscow , 119899 , Russia
| | - V. V. Grebenev
- b Department of Chemistry , Moscow State University , Moscow , 119899 , Russia
| | - O. V. Shelmenkova
- b Department of Chemistry , Moscow State University , Moscow , 119899 , Russia
| | - T. Kamiyama
- c Institute of Materials Structure Science , KEK, 1-1 Oho, Tsukuba, Ibaraki , 305-0801 , Japan
| | - K. Oikawa
- c Institute of Materials Structure Science , KEK, 1-1 Oho, Tsukuba, Ibaraki , 305-0801 , Japan
| | - I. A. Leonidov
- d Institute of Solid State Chemistry , Pervomayskaia 91, Yekaterinburg , 620219 , Russia
| | - O. N. Leonidova
- d Institute of Solid State Chemistry , Pervomayskaia 91, Yekaterinburg , 620219 , Russia
| | - S. A. Davydov
- e Institute of Metal Physics , Kovalevskaya 18, Yekaterinburg , 620219 , Russia
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Leonidov IA, Baklanova IV, Perelyaeva LA, Leonidova ON, Samigullina RF, Kozhevnikov VL. The effect of divalent cations on the structural parameters, phase transitions, and electrical conductivity of oxygen conductors based on LaGaO3. Dokl Chem 2009. [DOI: 10.1134/s0012500809080047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Denisova TA, Maksimova LG, Leonidova ON, Melkozerova MA, Zhuravlev NA, Polyakov EV. Lithium chloride sorption by zinc hexacyanoferrate(II) from a nonaqueous medium. RUSS J INORG CHEM+ 2009. [DOI: 10.1134/s0036023609050015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Denisova TA, Maksimova LG, Polyakov EV, Zhuravlev NA, Kovyazina SA, Leonidova ON, Khabibulin DF, Yur’eva EI. Metatitanic acid: Synthesis and properties. RUSS J INORG CHEM+ 2006. [DOI: 10.1134/s0036023606050019] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Leonidov IA, Leonidova ON, Samigullina RF, Patrakeev MV. Structural Aspects of Lithium Transfer in Solid Electrolytes Li2xZn2-3xTi1+xO4(0.33≤ x≤ 0.67). J STRUCT CHEM+ 2004. [DOI: 10.1023/b:jory.0000048876.52874.3b] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kovyazina SA, Perelyaeva LA, Leonidova ON, Leonidov IA, Ivanovskii AL. High-temperature Raman spectroscopy and phase transformations in phosphates and vanadates Ca3 − 3x Nd2x (AO4)2 (A = P, V; 0 ≤ x ≤ 0.14). CRYSTALLOGR REP+ 2004. [DOI: 10.1134/1.1690418] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Lazoryak BI, Belik AA, Stefanovich SY, Morozov VA, Malakho AP, Baryshnikova OV, Leonidov IA, Leonidova ON. Doklady Physical Chemistry 2002; 384:144-148. [DOI: 10.1023/a:1016063602815] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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