Synthesis, structural and electrochemical properties of new ytterbium-doped langbeinite ceramics

Souamti, Ahmed; Kahlaoui, Massoud; Mohammed, Benmohamed; Lozano-Gorrı́n, A.D.; Chehimi, Dalila Ben Hassen

doi:10.1016/j.ceramint.2017.05.132

Cited by 16 publications

(2 citation statements)

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“…While at room temperature, langbeinite systems show cubic symmetry, there have been reports of lowering of the symmetry to tetragonal or orthorhombic for some langbeinite-type phases at low temperature, leading to polar crystals which show ferroelectric properties [5][6][7][8]. More recently, there has been interest in the potential use of these systems as Na ion conducting electrolytes, albeit with low conductivity observed [9]. Further interest has been generated in their potential use as electrodes for Na-ion batteries.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and structures of sodium containing K2-xNaxMg2(SO4)3 langbeinite phases

Trussov

Driscoll

Male

et al. 2019

Journal of Solid State Chemistry

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In this work we report a detailed structural study of the K2-xNaxMg2(SO4)3 series in order to evaluate the effect of Na incorporation on the structure. The results show that the cubic langbeinite structure is observed at room temperature for high Na levels; K2-xNaxMg2(SO4)3 (0 ≤ x ≤ 1.8). Increasing the Na content further, 1.8 < x ≤ 1.9, leads to significant structural distortions, with the observation of an enlarged orthorhombic cell. These latter systems resemble a highly distorted variant of the langbeinite structure, and this relationship is also illustrated by the fact that they transform to the cubic langbeinite structure at relatively low temperature (≈200°C). In conjunction with our prior studies on Na2Mg2(SO4)3 (complex monoclinic cell, which also transforms to langbeinite at elevated temperature), this work highlights the flexibility of the langbeinite structure to accommodate high levels of Na ions, thus offering another potential avenue to manipulate the properties of materials with this structuretype.

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Section: Introductionmentioning

confidence: 99%

Synthesis and structures of sodium containing K2-xNaxMg2(SO4)3 langbeinite phases

Trussov

Driscoll

Male

et al. 2019

Journal of Solid State Chemistry

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“…Hence the langbeinite structure is favoured for larger alkali cations such as K, Rb (Figure 1). [12] [Fig 1 here] Little literature exists with regards to the transition metal sulfate langbeinites, with most work focusing on the optical properties of the Mg system, K2Mg2(SO4)3, doped with rare earth metals [13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Investigation into the ability of langbeinite-type K2M2(SO4)3 (M = Mn, Fe, Co and Ni) materials to accommodate Na: The importance of the electronegativity of the framework cation

Driscoll

Slater

2020

Journal of Solid State Chemistry

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Spectroscopic investigations on vanthoffite ceramics partially doped with cobalt

Bejaoui

Souamti

Kahlaoui

et al. 2018

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Synthesis, structural and electrochemical properties of new ytterbium-doped langbeinite ceramics

Cited by 16 publications

References 50 publications

Synthesis and structures of sodium containing K2-xNaxMg2(SO4)3 langbeinite phases

Synthesis and structures of sodium containing K2-xNaxMg2(SO4)3 langbeinite phases

Investigation into the ability of langbeinite-type K2M2(SO4)3 (M = Mn, Fe, Co and Ni) materials to accommodate Na: The importance of the electronegativity of the framework cation

Spectroscopic investigations on vanthoffite ceramics partially doped with cobalt

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