ChemInform Abstract: Novel Fast Ion Conductors of the Type MI 3MIIICl6 (MI: Li, Na, Ag; MIII: In, Y).

Steiner, H.‐J.; Lutz, H. D.

doi:10.1002/chin.199239014

Cited by 2 publications

(5 citation statements)

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“…To shed light on the influence of substituting Y with In, the Li 3 Y 1– x In x Cl 6 substitution series was synthesized in steps of x = 0.1 using a high-temperature solid-state synthesis route. The reaction temperature was varied from 550 to 280 °C based on the thermal stability of the product . X-ray powder diffraction analyses (Figure a) show that the solid-state synthesis yields almost pure samples of the Li 3 Y 1– x In x Cl 6 solid solution series. LiCl was found as a minor impurity (3–5 wt %) in all synthesized samples except for Li 3 YCl 6 .…”

Section: Resultsmentioning

confidence: 99%

“…Ampules were heated to the desired temperature with a heating rate of 100 °C h −1 . Since Li 3 InCl 6 has an incongruent melting point of 444 °C, 42 the synthesis temperature had to be lowered with increasing indium content. The reactions were performed at 550 °C (Li 3 YCl 6 ), 450 °C (Li 3 Y 1−x In x Cl 6 , 0.1 ≤ x ≤ 0.7), 400 °C (Li 3 Y 0.2 In 0.8 Cl 6 ), and 280 °C (Li 3 Y 1−x In x Cl 6 , 0.9 ≤ x ≤ 1).…”

Section: Methodsmentioning

confidence: 99%

“…The reaction temperature was varied from 550 to 280 °C based on the thermal stability of the product. 42 X-ray powder diffraction analyses (Figure 3a) show that the solid-state synthesis yields almost pure samples of the Li 3 Y 1−x In x Cl 6 solid solution series.…”

Section: Phase Evolution In LI 3 Y 1−x Inmentioning

confidence: 99%

“…In contrast, Li 3 InCl 6 , Li 3 ScCl 6 , and Li 3 M Br 6 with M = Sm–Lu adopt a ccp-type of the halide anion framework and a monoclinic structure with C 2/ m space group. , In the case of Li 3 InCl 6 , indium is known to occupy In(1) (Wyckoff 2 a ) and In(2)/Li(4) (Wyckoff 4 g ) sites in the (001) plane. Recent work on monoclinic Li 3 HoBr 6– x I x substitution series shows that cation-site disorder in (001) plane strongly influences the lithium-ion dynamics .…”

Section: Introductionmentioning

confidence: 99%

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Exploring Layered Disorder in Lithium-Ion-Conducting Li₃Y_1–xIn_xCl₆

Banik,

Samanta,

Helm

et al. 2024

Inorg. Chem.

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Li 3 Y 1−x In x Cl 6 undergoes a phase transition from trigonal to monoclinic via an intermediate orthorhombic phase. Although the trigonal yttrium containing the end member phase, Li 3 YCl 6 , synthesized by a mechanochemical route, is known to exhibit stacking fault disorder, not much is known about the monoclinic phases of the serial composition Li 3 Y 1−x In x Cl 6 . This work aims to shed light on the influence of the indium substitution on the phase evolution, along with the evolution of stacking fault disorder using X-ray and neutron powder diffraction together with solid-state nuclear magnetic resonance spectroscopy, studying the lithium-ion diffusion. Although Li 3 Y 1−x In x Cl 6 with x ≤ 0.1 exhibits an ordered trigonal structure like Li 3 YCl 6 , a large degree of stacking fault disorder is observed in the monoclinic phases for the x ≥ 0.3 compositions. The stacking fault disorder materializes as a crystallographic intergrowth of faultless domains with staggered layers stacked in a uniform layer stacking, along with faulted domains with randomized staggered layer stacking. This work shows how structurally complex even the "simple" series of solid solutions can be in this class of halide-based lithium-ion conductors, as apparent from difficulties in finding a consistent structural descriptor for the ionic transport.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Phase Evolution In LI 3 Y 1−x Inmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Exploring Layered Disorder in Lithium-Ion-Conducting Li₃Y_1–xIn_xCl₆

Banik,

Samanta,

Helm

et al. 2024

Inorg. Chem.

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“…Based on the splitting peak at ∼16°and the different positions of ( 111) and ( 121) reflections compared to those of ( 101) and ( 121) reflections for the trigonal structure, SS-Li 3−3x Y 1+x Cl 6 (x > 0) can be indexed into the orthorhombic structure (Pnma space group). 43 The orthorhombic phase exists as a solid solution in a narrow Li-deficient region (0 < x < 0.17), and an impurity phase (YCl 3 ) starts to appear in SS-Li 3−3x Y 1+x Cl 6 with x ≥ 0.17. All samples show similar morphologies, consisting of agglomerated secondary particles made up of small primary particles several hundred nanometers in size (Figure S1).…”

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confidence: 99%

Halide Superionic Conductors for All-Solid-State Batteries: Effects of Synthesis and Composition on Lithium-Ion Conductivity

Yang,

Kim,

Chen

2024

ACS Energy Lett.

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Owing to their high-voltage stabilities, halide superionic conductors such as Li 3 YCl 6 recently emerged as promising solid electrolyte (SE) materials for all-solid-state batteries (ASSBs). It has been shown that by either introducing off-stoichiometry in solid-state (SS) synthesis or using a mechanochemical (MC) synthesis method the ionic conductivities of Li 3−3x Y 1+x Cl 6 can increase up to an order of magnitude. The underlying mechanism, however, is unclear. In the present study, we adopt a hopping frequency analysis method of impedance spectra to reveal the correlations in stoichiometry, crystal structure, synthesis conditions, Li + carrier concentrations, hopping migration barriers, and ionic conductivity. We show that unlike the conventional Li 3 YCl 6 made by SS synthesis, mobile Li + carriers in the defect-containing SS-Li 3−3x Y 1+x Cl 6 (0 < x < 0.17) and MC-Li 3−3x Y 1+x Cl 6 are generated with an activation energy and their concentration is dependent on temperature. Higher ionic conductivities in these samples arise from a combination of a higher Li + carrier concentration and lower migration energy barriers. A new off-stoichiometric halide (Li 2.61 Y 1.13 Cl 6 ) with the highest ionic conductivity (0.47 mS cm −1 ) in the series is discovered, which delivers exceptional cycling performance (∼90% capacity retention after 1000 cycles) in ASSB cells equipped with an uncoated high-energy LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NMC811) cathode. This work sheds light on the thermal activation process that releases trapped Li + ions in defect-containing halides and provides guidance for the future development of superionic conductors for all-solid-state batteries.

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ChemInform Abstract: Novel Fast Ion Conductors of the Type MI 3MIIICl6 (MI: Li, Na, Ag; MIII: In, Y).

Cited by 2 publications

References 1 publication

Exploring Layered Disorder in Lithium-Ion-Conducting Li₃Y_1–xIn_xCl₆

Exploring Layered Disorder in Lithium-Ion-Conducting Li₃Y_1–xIn_xCl₆

Halide Superionic Conductors for All-Solid-State Batteries: Effects of Synthesis and Composition on Lithium-Ion Conductivity

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ChemInform Abstract: Novel Fast Ion Conductors of the Type MI 3MIIICl6 (MI: Li, Na, Ag; MIII: In, Y).

Cited by 2 publications

References 1 publication

Exploring Layered Disorder in Lithium-Ion-Conducting Li3Y1–xInxCl6

Exploring Layered Disorder in Lithium-Ion-Conducting Li3Y1–xInxCl6

Halide Superionic Conductors for All-Solid-State Batteries: Effects of Synthesis and Composition on Lithium-Ion Conductivity

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Exploring Layered Disorder in Lithium-Ion-Conducting Li₃Y_1–xIn_xCl₆

Exploring Layered Disorder in Lithium-Ion-Conducting Li₃Y_1–xIn_xCl₆