Lithium Ion Conduction in Oxides

Cussen, Edmund J.

doi:10.1002/9780470686072.ch3

Cited by 3 publications

(1 citation statement)

References 185 publications

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“…The known instances include chiral chains of edge-sharing, distorted MnO 4 tetrahedra observed in several alkali metal manganates. , In these compounds, the tetrahedra are metal-centered, in contrast with the oxygen-centered tetrahedra in 1 and 2 . As indicated by Pauling’s third rule, edge-sharing is unusual in general for tetrahedra because of the short separations that result between the like-charged atoms at the tetrahedral centers . This polyhedral pattern is more readily realized in basic lead compounds because of the large Pb 2+ diameter.…”

Section: Resultsmentioning

confidence: 99%

Helical _∞¹[Pb₂O] Chains in Polymorphs of Pb₂O(C₆H₅COO)₂

Easterday

Dedon

Zeller

et al. 2014

Crystal Growth & Design

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Three new lead oxide benzoates have been prepared solvothermally. In two polymorphs, 1 and 2, of Pb 2 O(C 6 H 5 COO) 2 , distorted Pb 4 O tetrahedra share edges to form helical ∞ 1 [Pb 2 O] chains. Unprecedented among Pb 4 O-based structures, these motifs may be viewed as double helices of lead atoms surrounding the central oxygen atoms. Both right-and left-handed helices are included in each structure. Formation of the polymorphs was controlled through variation in synthetic conditions. Polymorph 1 crystallizes in the achiral, polar space group Fdd2. Polymorph 2, in P2 1 , is a rare example of a kryptoracemate in which crystallographically independent chains of both chiralities occur in the asymmetric unit. This second polymorph is both chiral and polar, and the pseudosymmetric relationship between the helices has been examined. In Pb 4 O(C 6 H 5 COO) 6 (3), discrete Pb 4 O tetrahedra are bridged by benzoate ligands to form a one-dimensional hybrid structure. The compounds have been further characterized via IR spectroscopy, elemental analysis, and thermogravimetric analysis. Measurement of the second-harmonic generating activity of 1 and 2 corroborates the crystallographic findings of noncentrosymmetry.

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Section: Resultsmentioning

confidence: 99%

Helical _∞¹[Pb₂O] Chains in Polymorphs of Pb₂O(C₆H₅COO)₂

Easterday

Dedon

Zeller

et al. 2014

Crystal Growth & Design

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Formation Mechanism of Amorphous Li₄GeO₄ Nanoparticles Synthesized by Induction Thermal Plasma for All-Solid-State Batteries

et al. 2023

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Induction thermal plasma as an advanced synthesis method for amorphous nanoparticles attracts a lot of attention. Amorphous Li4GeO4 nanoparticles were synthesized by induction thermal plasma with different Li/Ge molar ratios and quenching gas flow rates. Transmission electron microscopy, X-ray diffraction, and Raman spectroscopy were conducted to understand the product morphology and chemical composition. The formation mechanism was investigated according to experimental results and thermodynamic analysis. The topological order of prepared nanoparticles was discussed in the short range and intermediate range based on O–Ge–O and Ge–O–Ge angle distributions, respectively. An enhanced amorphous degree of Li4GeO4 and a fraction of high-temperature-phase γ-Li4GeO4 were obtained in high Ge content and quenching rate conditions. The amorphous Li4GeO4 degree achieved around 65% with 10 L/min quenching gas injection. However, excessive Ge content and quenching rate also result in byproduct Li2GeO3 formation. The above results indicate that amorphous Li4GeO4 nanoparticles can be efficiently synthesized by induction thermal plasma with an appropriate Li/Ge molar ratio and quenching rate.

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Deep hydration of an Li_7–3xLa₃Zr₂ M ^III _xO₁₂ solid-state electrolyte material: a case study on Al- and Ga-stabilized LLZO

Redhammer¹,

Tippelt²,

Rettenwander³

2021

Acta Crystallogr C

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Single crystals of an Li-stuffed, Al- and Ga-stabilized garnet-type solid-state electrolyte material, Li7La3Zr2O12 (LLZO), have been analysed using single-crystal X-ray diffraction to determine the pristine structural state immediately after synthesis via ceramic sintering techniques. Hydrothermal treatment at 150 °C for 28 d induces a phase transition in the Al-stabilized compound from the commonly observed cubic Ia\overline{3}d structure to the acentric I\overline{4}3d subtype. LiI ions at the interstitial octahedrally (4 + 2-fold) coordinated 48e site are most easily extracted and AlIII ions order onto the tetrahedral 12a site. Deep hydration induces a distinct depletion of LiI at this site, while the second tetrahedral site, 12b, suffers only minor LiI loss. Charge balance is maintained by the incorporation of HI, which is bonded to an O atom. Hydration of Ga-stabilized LLZO induces similar effects, with complete depletion of LiI at the 48e site. The LiI/HI exchange not only leads to a distinct increase in the unit-cell size, but also alters some bonding topology, which is discussed here.

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Lithium Ion Conduction in Oxides

Cited by 3 publications

References 185 publications

Helical _∞¹[Pb₂O] Chains in Polymorphs of Pb₂O(C₆H₅COO)₂

Helical _∞¹[Pb₂O] Chains in Polymorphs of Pb₂O(C₆H₅COO)₂

Formation Mechanism of Amorphous Li₄GeO₄ Nanoparticles Synthesized by Induction Thermal Plasma for All-Solid-State Batteries

Deep hydration of an Li_7–3xLa₃Zr₂ M ^III _xO₁₂ solid-state electrolyte material: a case study on Al- and Ga-stabilized LLZO

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Lithium Ion Conduction in Oxides

Cited by 3 publications

References 185 publications

Helical ∞1[Pb2O] Chains in Polymorphs of Pb2O(C6H5COO)2

Helical ∞1[Pb2O] Chains in Polymorphs of Pb2O(C6H5COO)2

Formation Mechanism of Amorphous Li4GeO4 Nanoparticles Synthesized by Induction Thermal Plasma for All-Solid-State Batteries

Deep hydration of an Li7–3x La3Zr2 M III x O12 solid-state electrolyte material: a case study on Al- and Ga-stabilized LLZO

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Helical _∞¹[Pb₂O] Chains in Polymorphs of Pb₂O(C₆H₅COO)₂

Helical _∞¹[Pb₂O] Chains in Polymorphs of Pb₂O(C₆H₅COO)₂

Formation Mechanism of Amorphous Li₄GeO₄ Nanoparticles Synthesized by Induction Thermal Plasma for All-Solid-State Batteries

Deep hydration of an Li_7–3xLa₃Zr₂ M ^III _xO₁₂ solid-state electrolyte material: a case study on Al- and Ga-stabilized LLZO