Advances in Molten Salt Synthesis of Non‐oxide Materials

Li, Shaolong; Song, Jianxun; Che, Yusi; Jiao, Shuqiang; He, Jilin; Yang, Bin

doi:10.1002/eem2.12339

Cited by 23 publications

(21 citation statements)

References 126 publications

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“…Besides oxygenated species, molten salts have also been used for about ten years as versatile reaction media to synthesise various metal non-oxides. An exhaustive list of non-oxide nanomaterials has been delivered recently by Gupta and Mao 6 and by Li et al 191 Hence, below we discuss the chemical concepts underlying the ease or difficulty to perform the synthesis of the different families of materials currently accessible. We highlight the advantages and disadvantages of molten salts for these families of materials compared to more common synthesis processes, and we provide also some most recent advances in each of these families.…”

Section: Molten Salts: Focus On Nanomaterials Synthesismentioning

confidence: 99%

Geoinspired syntheses of materials and nanomaterials

et al. 2022

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Section: Molten Salts: Focus On Nanomaterials Synthesismentioning

confidence: 99%

Geoinspired syntheses of materials and nanomaterials

et al. 2022

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“…45−49 Compared to CVD, which usually requires high temperature to vaporize the solid precursors into molecules, the chemical bonds can be easily destabilized due to the strong polarizing force provided by molten salt, allowing for chemical reactions to occur at relatively reduced temperatures. 42,43 For RE materials, REOCl (RE = La−Nd, Sm−Gd) is the stable species in the LiCl−KCl eutectic system 50−53 and LaOCl microplates have been obtained using the salt-assisted method. 54,55 However, the thickness of these plates was over hundreds of nanometers, hindering their application in 2D electronic devices.…”

Section: Introductionmentioning

confidence: 99%

General Approach for Two-Dimensional Rare-Earth Oxyhalides with High Gate Dielectric Performance

et al. 2023

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Two-dimensional (2D) rare-earth oxyhalides (REOXs) with novel properties offer fascinating opportunities for fundamental research and applications. The preparation of 2D REOX nanoflakes and heterostructures is crucial for revealing their intrinsic properties and realizing high-performance devices. However, it is still a great challenge to fabricate 2D REOX using a general approach. Herein, we design a facile strategy to prepare 2D LnOCl (Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy) nanoflakes using the molten salt method assisted by the substrate. A dual-driving mechanism was proposed in which the lateral growth could be guaranteed by the quasi-layered structure of LnOCl and the interaction between the nanoflakes and the substrate. Furthermore, this strategy has also been successfully applied for block-by-block epitaxial growth of diverse lateral heterostructures and superlattice. More significantly, the high performance of MoS2 field-effect transistors with LaOCl nanoflake as the gate dielectric was demonstrated, exhibiting competitive device characteristics of high on/off ratios up to 107 and low subthreshold swings down to 77.1 mV dec–1. This work offers a deep understanding of the growth of 2D REOX and heterostructures, shedding new light on the potential applications in future electronic devices.

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“…Oxides or even multi-component ores and graphite powders can be used as raw materials to synthesize MAX phase powders by molten salt electrolysis. Molten salt as an ionic solvent facilitates the mass transfer and nucleation/growth processes, resulting in finer and more homogeneous particle products (Liu et al, 2013;Li et al, 2021;Li et al, 2022). Up until now, some MAX phases (V 2 AlC, Ti 3 AlC 2 , V 4 AlC 3 , Cr 2 AlC, etc.)…”

Section: Introductionmentioning

confidence: 99%

Molten salt electrosynthesis of Cr2GeC nanoparticles as anode materials for lithium-ion batteries

et al. 2023

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The two-dimensional MAX phases with compositional diversity are promising functional materials for electrochemical energy storage. Herein, we report the facile preparation of the Cr2GeC MAX phase from oxides/C precursors by the molten salt electrolysis method at a moderate temperature of 700°C. The electrosynthesis mechanism has been systematically investigated, and the results show that the synthesis of the Cr2GeC MAX phase involves electro-separation and in situ alloying processes. The as-prepared Cr2GeC MAX phase with a typical layered structure shows the uniform morphology of nanoparticles. As a proof of concept, Cr2GeC nanoparticles are investigated as anode materials for lithium-ion batteries, which deliver a good capacity of 177.4 mAh g−1 at 0.2 C and excellent cycling performance. The lithium-storage mechanism of the Cr2GeC MAX phase has been discussed based on density functional theory (DFT) calculations. This study may provide important support and complement to the tailored electrosynthesis of MAX phases toward high-performance energy storage applications.

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Advances in Molten Salt Synthesis of Non‐oxide Materials

Cited by 23 publications

References 126 publications

Geoinspired syntheses of materials and nanomaterials

Geoinspired syntheses of materials and nanomaterials

General Approach for Two-Dimensional Rare-Earth Oxyhalides with High Gate Dielectric Performance

Molten salt electrosynthesis of Cr2GeC nanoparticles as anode materials for lithium-ion batteries

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