A comparison of the transport properties of lithium-stuffed garnets and the conventional phases Li3Ln3Te2O12

Cussen, Edmund J.; Yip, Thomas W. S.; O'Neill, Gemma; O’Callaghan, Michael P.

doi:10.1016/j.jssc.2010.12.021

Cited by 45 publications

(35 citation statements)

References 22 publications

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“…The dodecahedron of LaO 8 are larger than octahedrons of ZrO 6 , hence, the cell parameter decreases with the increase in the size of doped pentavalent ions. The variation trend of the cell parameter with the change of radius of pentavalent doped ion is similar to the found of Cussen in garnet . On the other hand, the bond length of M‐Li2 becomes larger with the increase of bond length of M–O.…”

Section: Resultssupporting

confidence: 82%

Dual regulation of Li⁺ migration of Li_6.4La₃Zr_1.4M_0.6O₁₂ (M = Sb, Ta, Nb) by bottleneck size and bond length of M−O

et al. 2019

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Bottleneck size is the minimum Li+ migration channel of Li7La3Zr2O12 (LLZO) and it greatly influences the Li+ conductivity. Doping different elements on the Zr site of LLZO can adjust the bottleneck size and improve the Li+ conductivity. However, the regulation mechanism is not clear. In this work, Li6.4La3Zr1.4M0.6O12 (M = Sb, Ta, Nb) has been prepared and the bottleneck size has been adjusted by doping different pentavalent ions. The results manifest that the cell parameter and bottleneck size decrease with the rise of the radius of doped pentavalent ions. This is because larger pentavalent ion leads to larger bond length of M–O, and weaker covalent component between M5+ and O2‐, corresponding, the formal charge on the M5+ become larger, and the bond length of La–O slightly decreases due to the coulomb repulsion between La3+ and M5+ increase. While, the activation energy drop firstly and then rise with the rise of bottleneck size because of the migration of Li+ not only relate to the size of the migration channel but also to the strength of M–O covalent bonding. The bottleneck size and bond length of M–O synergistically affect the migration of Li+.

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Section: Resultssupporting

confidence: 82%

Dual regulation of Li⁺ migration of Li_6.4La₃Zr_1.4M_0.6O₁₂ (M = Sb, Ta, Nb) by bottleneck size and bond length of M−O

et al. 2019

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“…[2] A somewhat unusual family of garnets which contain lithium have recently begun to attract attention for their potential application in Li-ion batteries. [10,11,12,13,14,15] In these compounds, the lithium atoms occupy a variety of sites with an adjustable number per formula unit, to balance the charge. [16] It is important to note that, by convention, the formulas of Lithium-containing garnets are not written in the typical A-B-C order, but are written C-A-B, with the tetrahedrally-coordinated atom first, and the octahedrally coordinated atom last: e.g.…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties of lithium-containing rare earth garnets Li₃RE₃Te₂O₁₂ (RE = Y, Pr, Nd, Sm-Lu)

Cevallos

Guo

Cava

2018

Mater. Res. Express

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The synthesis, structural description, temperature dependent magnetic susceptibilities and field dependent magnetizations of a series of rare earth garnets of the form Li3RE3Te2O12 (RE = Y, La, Pr, Nd, Sm-Lu) are reported. The structure of Li3Dy3Te2O12 is refined from powder X-ray diffraction data. The field dependent magnetizations saturate for some of the members by 9 Tesla at 2 K. Of particular interest for further study in this family is the behavior of the Pr, Tb, Dy and Yb garnets.

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“…tivity data of published research efforts will shed light on the structural limitation of this class of materials and hopefully inspire more researchers to focus on exploring novel lithium conducting solid electrolytes. 11 However, for a high ionic conductivity a higher lithium content is needed, which is achieved in the Li-"stuffed" garnet compositions. 5,7 The crystal structure of the initially reported composition Li 5 13,14 have suggested a displacement of the Li + , away from 48g towards the Wyckoff position 96h.…”

Section: Introductionmentioning

confidence: 99%

Structural limitations for optimizing garnet-type solid electrolytes: a perspective

Zeier

2014

Dalton Trans.

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Lithium ion batteries exhibit the highest energy densities of all battery types and are therefore an important technology for energy storage in every day life. Today's commercially available batteries employ organic polymer lithium conducting electrolytes, leading to multiple challenges and safety issues such as poor chemical stability, leakage and flammability. The next generation lithium ion batteries, namely all solid-state batteries, can overcome these limitations through employing a ceramic Li + conducting electrolyte. In the past decade, there has been a major focus on the structural and ionic transport properties of lithium-conducting garnets, and the extensive research efforts have led to a thorough understanding of the structure-property relationships in this class of materials. However, further improvement seems difficult due to structural limitations. The purpose of this Perspective article is to provide a brief structural overview of Li conducting garnets and the structural influence on the optimization of Li-ionic conductivities.

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A comparison of the transport properties of lithium-stuffed garnets and the conventional phases Li3Ln3Te2O12

Cited by 45 publications

References 22 publications

Dual regulation of Li⁺ migration of Li_6.4La₃Zr_1.4M_0.6O₁₂ (M = Sb, Ta, Nb) by bottleneck size and bond length of M−O

Dual regulation of Li⁺ migration of Li_6.4La₃Zr_1.4M_0.6O₁₂ (M = Sb, Ta, Nb) by bottleneck size and bond length of M−O

Magnetic properties of lithium-containing rare earth garnets Li₃RE₃Te₂O₁₂ (RE = Y, Pr, Nd, Sm-Lu)

Structural limitations for optimizing garnet-type solid electrolytes: a perspective

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A comparison of the transport properties of lithium-stuffed garnets and the conventional phases Li3Ln3Te2O12

Cited by 45 publications

References 22 publications

Dual regulation of Li+ migration of Li6.4La3Zr1.4M0.6O12 (M = Sb, Ta, Nb) by bottleneck size and bond length of M−O

Dual regulation of Li+ migration of Li6.4La3Zr1.4M0.6O12 (M = Sb, Ta, Nb) by bottleneck size and bond length of M−O

Magnetic properties of lithium-containing rare earth garnets Li3RE3Te2O12 (RE = Y, Pr, Nd, Sm-Lu)

Structural limitations for optimizing garnet-type solid electrolytes: a perspective

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Dual regulation of Li⁺ migration of Li_6.4La₃Zr_1.4M_0.6O₁₂ (M = Sb, Ta, Nb) by bottleneck size and bond length of M−O

Dual regulation of Li⁺ migration of Li_6.4La₃Zr_1.4M_0.6O₁₂ (M = Sb, Ta, Nb) by bottleneck size and bond length of M−O

Magnetic properties of lithium-containing rare earth garnets Li₃RE₃Te₂O₁₂ (RE = Y, Pr, Nd, Sm-Lu)