Crystal structures and ionic conductivity in Li2OHX (X = Cl, Br) antiperovskites

Koedtruad, Anucha; Patiño, Midori Amano; Ichikawa, Noriya; Kan, Daisuke; Shimakawa, Yuichi

doi:10.1016/j.jssc.2020.121263

Cited by 30 publications

(42 citation statements)

References 19 publications

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“…This activation energy is similar to that of Li 2 OHBr (0.55 eV). 24 We note again that the Li vacancies are introduced in the Li1 and Li3 sites and that the rock-salt type LiBr layer is rigid. This implies that Li-ion hopping conduction through the vacant sites are conned within the two-dimensional double antiperovskite layers.…”

Section: Resultsmentioning

confidence: 76%

“…The obtained conductivity at 30 C is 1.27 Â 10 À7 S cm À1 , which is comparable to that of the simple antiperovskite Li 2 -OHBr (1.33 Â 10 À7 S cm À1 ). 24 A DC polarization measurement at the same temperature (Fig. S4 †) reveals that the electronic conductivity is of the order of 10 À11 S cm À1 , which is about four orders of magnitude lower than the total conductivity.…”

Section: Resultsmentioning

confidence: 94%

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Ruddlesden–Popper phases of lithium-hydroxide-halide antiperovskites: two dimensional Li-ion conductors

et al. 2020

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Section: Resultsmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 94%

Ruddlesden–Popper phases of lithium-hydroxide-halide antiperovskites: two dimensional Li-ion conductors

et al. 2020

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“…Compared to lithium oxyhalide SSEs, the pure phase of lithium halide hydroxide SSEs is easier to be experimentally obtained by facile solid-state sintering. 30 And theoretical calculations also demonstrated that the formation energy of Li 2 OHCl from LiOH + LiCl is significantly lower than that of Li 3 OCl. 65 However, the calculated value of formation energy of Li 2 OHCl is positive, meaning that Li 2 OHCl is also thermodynamically unstable.…”

Section: Phase Stabilitymentioning

confidence: 94%

“…Moreover, Li 2 OHCl exhibits an orthorhombic phase at low temperature and transforms into a cubic structure when heated to around 40 C, 30,32,34 accompanied with the enhanced ionic conductivity by two orders of magnitude. It indicates that a high-symmetry structure facilitates Li + motion in LiRAPs.…”

Section: Phase Stabilitymentioning

confidence: 99%

Anti‐perovskite materials for energy storage batteries

Deng

Chen

et al. 2021

InfoMat

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Anti-perovskites X 3 BA, as the electrically inverted derivatives of perovskites ABX 3 , have attracted tremendous attention for their good performances in multiple disciplines, especially in energy storage batteries. The Li/Na-rich antiperovskite (LiRAP/NaRAP) solid-state electrolytes (SSEs) typically show high ionic conductivities and high chemical/electrochemical stability toward the Li-metal anode, illustrating their great potential for applications in the Limetal batteries (LMBs) using nonaqueous liquid electrolyte or all-solid-state electrolyte. The antiperovskites have been studied as artificial solid electrolyte interphase for Li-metal anode protection, film SSEs for thin-film batteries, and low melting temperature solid electrolyte enabling melt-infiltration for the manufacture of all-solid-state lithium batteries. Transition metal-doped LiRAPs as cathodes have demonstrated a high discharge specific capacity and good rate capability in the Li-ion batteries (LIBs). Additionally, the underlying scientific principles in antiperovskites with flexible structural features have also been extensively studied. In this review, we comprehensively summarize the development, structural design, ionic conductivity and ion transportation mechanism, chemical/electrochemical stability, and applications of some antiperovskite materials in energy storage batteries. The perspective for enhancing the performance of the antiperovskites is also provided as a guide for future development and applications in energy storage. K E Y W O R D S antiperovskite, chemical and electrochemical stability, energy storage, solid-state electrolyte Zhi Deng and Dixing Ni contributed equally to this work.

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“…Later, the proton-rich derivatives Li 2 OHX (X = Cl, Br, I) have also been synthesized and showed higher purity and milder synthesis process ( Hood et al, 2016 ; Li et al, 2016 ; Xiao et al, 2021 ). The Li 2 OHX (X = Cl, Br, I) electrolytes possess high lithium content and a similar crystal structure to Li 3 OX but with higher phase stability and can be prepared from low-price starting materials ( Hood et al, 2016 ; Li et al, 2016 ; Koedtruad et al, 2020 ; Lu et al, 2020 ; Deng et al, 2021 ; Guo et al, 2021 ). They have also displayed remarkable chemical and electrochemical stabilities toward lithium metals even at elevated temperatures ( Guo et al, 2021 ; Lai et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Optimized Interfaces in Anti-Perovskite Electrolyte-Based Solid-State Lithium Metal Batteries for Enhanced Performance

Zhu

et al. 2021

Front. Chem.

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Solid-state lithium metal batteries have attracted broad interest as a promising energy storage technology because of the high energy density and enhanced safety that are highly desired in the markets of consumer electronics and electric vehicles. However, there are still many challenges before the practical application of the new battery. One of the major challenges is the poor interface between lithium metal electrodes and solid electrolytes, which eventually lead to the exceptionally high internal resistance of the cells and limited output. The interface issue arises largely due to the poor contact between solid and solid, and the mechanical/electrochemical instability of the interface. In this work, an in situ “welding” strategy is developed to address the interfacial issue in solid-state batteries. Microliter-level of liquid electrolyte is transformed into an organic–inorganic composite buffer layer, offering a flexible and stable interface and promoting enhanced electrochemical performance. Symmetric lithium–metal batteries with the new interface demonstrate good cycling performance for 400 h and withstand the current density of 0.4 mA cm−2. Full batteries developed with lithium–metal anode and LiFePO4 cathode also demonstrate significantly improved cycling endurance and capacity retention.

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Crystal structures and ionic conductivity in Li2OHX (X = Cl, Br) antiperovskites

Cited by 30 publications

References 19 publications

Ruddlesden–Popper phases of lithium-hydroxide-halide antiperovskites: two dimensional Li-ion conductors

Ruddlesden–Popper phases of lithium-hydroxide-halide antiperovskites: two dimensional Li-ion conductors

Anti‐perovskite materials for energy storage batteries

Optimized Interfaces in Anti-Perovskite Electrolyte-Based Solid-State Lithium Metal Batteries for Enhanced Performance

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