Fast ionic conductivity and crystal structure of spinel-type Li2 − xMn1 − xMxCl4 (M = Ga, In)

Lutz, H. D.; Steiner, H.‐J.; Wickel, Ch.

doi:10.1016/s0167-2738(96)00592-9

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…Another interesting class of materials recently reemerged is the rare-earth halides Li 3 MX 6 (M = Y, Er, La; X = Cl, Br, I) [362,[412][413][414][415][416][417][418]. While these materials were investigated in the early 1990s [419][420][421][422][423][424], only the application of ball-milling has led to the recently achieved high ionic conductivities, likely related to an underlying structural disorder [362,412,418].…”

Section: New and Upcoming Materials Classesmentioning

confidence: 99%

Materials design of ionic conductors for solid state batteries

et al. 2020

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A rapidly approaching theoretical limit of Li-ion batteries pushes the desire for next-generation energy storage devices [1]. One of the promising candidates is the all-solid-state battery with inorganic solid ion conductors. By replacing the currently employed liquid electrolyte, this battery architecture is thought to pave the way for a significant enhancement in the energy density with a Li-metal anode, as well as increase the battery safety [1][2][3][4]. The superior thermal stability of solid electrolytes enables operation without cooling, leading to a further gain in energy density when it comes to the device integration. Utilization of Na-ions may even enhance environmental friendliness. The solid ionic conductor performs the function of the separator, as well as the electrolyte in the electrode composites. Therefore, when replacing the liquid-solid interfacial contact that already proves cumbersome in today's lithium-ion batteries, solid-solid interfaces will show different degradation kinetics [5,6]. Although the diffusion kinetics in electrode materials matters in practice [7], as only one type of charge carrier is available effectively leading to cation transference numbers of unity, fast-charging seems possible due to minute cell polarization at high currents [8]. However, instability of the ionic conductors towards the electrodes makes protection concepts necessary [9][10][11][12]. While the interfacial stability and battery architecture are still open questions in the field, high ionic conductivity is paramount for all-solid-state battery operation [2,13]. Conductivities at room temperature above 1 mS cm −1 are typically considered to be sufficient for building research-based devices, whereas likely higher conductivities >10 mS cm −1 will be needed for high energy densities with thick electrode configurations and fast charging/discharging [14].The process of ionic conduction in solids has received attention over decades due to the possible application of oxide ion conductors in sensors and fuel cells and cation conductors in batteries, for instance as electrode materials [15][16][17][18][19][20]. The understanding of lithium and sodium solid-state ionic conductors grew when Na β″alumina, the NASICON (Na SuperIonic CONductor), and LISICON (Li SuperIonic CONductor) structures were found [21][22][23]. However, grain boundaries and mechanical brittleness of these materials have limited the

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Section: New and Upcoming Materials Classesmentioning

confidence: 99%

Materials design of ionic conductors for solid state batteries

et al. 2020

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“…x B x Si 1-x O 4 [2], Pb 5 (P x As 1-x O4) 3 Cl [3] and Sr x Ca 1-x CO 3 [4]. Group information in crystal structure of [(NH 4 ) 1-x Rb x ] 3 H(SO 4 ) 2 [5], Mg x Zn 3-x BPO 7 , Ce x Pr 1-x O 2-δ [6] and Li 2-x Mn 1-x M x Cl 4 (M=Ga,In) were determined with Infrared (IR) and Raman spectroscopy [7]. The crystal cell symmetry of YMn 1-x (Cu 3/4 Mo 1/4 ) x O 3 [8] were determined by selected area electron diffraction.…”

Section: Introductionmentioning

confidence: 99%

The Study on Thermal Properties of Solid Solution (K, NH<sub>4</sub>)Cl

Yuan

et al. 2011

AMR

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Solid solutions with different compositions, mNH4Cl·KCl and NH4Cl·nKCl (m，n≥1), were prepared by the constant speed cooling method. The thermal stability of the solid solutions was determined by TG-DTA. The results show that mNH4Cl·KCl crystals change its crystal form at 180°C, decompose into ammonia and hydrogen chloride gas at 330°C, melt at 790°C, and finally evaporate at around 820°C. Its evaporation temperature increases with the increasing of potassium chloride content in the samples. The Solid solution of NH4Cl·nKCl decomposes to ammonia and hydrogen chloride gas at 230°C, melts at 790°C, and evaporates at 800°C. The continuous specific heat curve of the solid solution (NH4, K)Cl were also determined. These data provide a theoretical basis for further research on solid solution properties.

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Universität Siegen

2017

Geschichte Der Anorganischen Chemie

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Fast ionic conductivity and crystal structure of spinel-type Li2 − xMn1 − xMxCl4 (M = Ga, In)

Cited by 4 publications

References 12 publications

Materials design of ionic conductors for solid state batteries

Materials design of ionic conductors for solid state batteries

The Study on Thermal Properties of Solid Solution (K, NH<sub>4</sub>)Cl

Universität Siegen

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