In-situ synthesis of MoSi2 coating on molybdenum substrate by electro-deoxidation of a SiO2 layer in molten salt

Dai, Lei; Yu, Yao; Zhou, Huizhu; Yan, X. Y.; Zhu, Jing; Li, Yuehua

doi:10.1016/j.ceramint.2015.07.164

Cited by 15 publications

(7 citation statements)

References 23 publications

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“…[73] Jiao et al prepared intermetallic TiSi alloys by electro-deoxidation in molten CaCl 2 at 900 °C. [74] Moreover, Si/ TiSi 2 heteronanostructures prepared by electrolysis show promising Li-storage performance when used as LIB anodes. [73,75] At a charge/discharge rate of up to 8400 mA g À 1 , the Si/TiSi 2 anodes show a specific capacity of > 1000 mAh g À 1 and a slight capacity attenuation of 0.1 % per cycle during 20 th -100th cycles.…”

Section: Other Methodsmentioning

confidence: 99%

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Microstructure Engineered Silicon Alloy Anodes for Lithium‐Ion Batteries: Advances and Challenges

Zheng

Sun

Liu

et al. 2022

Batteries & Supercaps

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Due to the high theoretical lithium storage capacity and moderate voltage platform, silicon is expected to substitute graphite and serves as the most promising anode material for lithium-ion batteries (LIBs). However, substantial volume change during cycling subjects the silicon anode to electrode pulverization and conductive network damage, extensively limiting its commercial purpose. Strategies, such as alloying, nano-crystallization, and compositing, are developed against these problems. This review introduces the attractive alloying modification method and summarizes the recent advances in microstructureengineered silicon alloy anodes for LIBs. The electrochemical performances of silicon alloy anodes with various morphologies, such as nanoparticles, nanowires, two-dimensional layered structures, porous structures, and thin films, are discussed in detail. The challenges for the commercial application of silicon alloy anodes are elaborated in the end. This review provides a comprehensive overview and concerns of microstructure-engineered silicon alloy anodes for potential applications in LIBs.

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Section: Other Methodsmentioning

confidence: 99%

“…Jiao et al. prepared intermetallic TiSi alloys by electro‐deoxidation in molten CaCl 2 at 900 °C [74] . Moreover, Si/TiSi 2 heteronanostructures prepared by electrolysis show promising Li‐storage performance when used as LIB anodes [73,75] .…”

Section: Synthesis Of Silicon‐based Alloysmentioning

confidence: 99%

Microstructure Engineered Silicon Alloy Anodes for Lithium‐Ion Batteries: Advances and Challenges

Zheng

Sun

Liu

et al. 2022

Batteries & Supercaps

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“…Some research groups also explored the MSS in the NaCl–CaCl 2 molten salt to synthesize ZrSi/ZrC nanocomposites . It could also be possible to synthesize silicide coating on metal substrate by electrodeposition in molten salt. , …”

Section: Other Nanomaterials Synthesized By the Mss Methodsmentioning

confidence: 99%

“…289 It could also be possible to synthesize silicide coating on metal substrate by electrodeposition in molten salt. 290,291 5.6. Chalcogenides.…”

Section: Leonard Et Al Synthesized Several Tmc Nanowires Such Asmentioning

confidence: 99%

Recent Developments on Molten Salt Synthesis of Inorganic Nanomaterials: A Review

2021

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A wide range of inorganic nanomaterials with many fascinating properties and application potentials in widespread fields may be synthesized by wet chemical synthetic routes. To achieve scientific and commercial viability of nanomaterials with uniformity and scalability, it is necessary to develop efficient and cost-effective, preferably sustainable, methods. The molten salt synthesis (MSS) method is one such bottom-up technique to fabricate a wide variety of inorganic nanomaterials with tunable size, morphology, and surface characteristics. It is also environmentally friendly, cost-effective, simple to operate, easy to scale, and generalizable, etc. This review gives a critical overview on this emerging and rapidly developing method for making defect free nanomaterials in well-defined texture, surface, and morphology at a relatively low formation temperature. We have discussed its different aspects, including the role of molten salts, the choice of molten salts, the electrochemical aspects, some advanced modifications of the conventional MSS technique, and their implications. To show the most recent development on MSS synthesized inorganic nanomaterials, this review only encompasses the studies reported over the last six years (2015−2020). We have summarized technologically important and emerging families of inorganic nanomaterials such as metal oxides, fluorides, nitrides, silicides, chalcogenides, oxohalides, borides, and carbides. Finally, a few perspectives for the MSS method are highlighted. It is expected that this review will further attract scientists to explore the MSS method in making size-and shape-tunable nanomaterials.

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“…At present, the commonly-used coating preparation methods for Mo and Mo alloys mainly include slurry sintering, 27,28 pack cementation, 12,29 plasma spraying, 30 chemical vapor deposition, 31,32 and molten salt method. [33][34][35] Compared with other methods, molten salt method has the advantages of simple process, low cost, excellent metallurgical bonding with substrate material, high efficiency and deposition rate. 36,37 Molten salt method takes halides, carbonates, and nitrates of alkali and alkaline earth metals as the reaction medium.…”

mentioning

confidence: 99%

Effect of Reaction Temperature on the Molten Salt Electrodeposition of Silicide Coating on Molybdenum Substrate and its Oxidation Behavior

Zhang,

Wang,

Wang

et al. 2023

J. Electrochem. Soc.

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Silicide coatings were successfully prepared on Mo substrates using NaCl-KCl-NaF molten salt as the reaction medium and K2SiF6 as the silicon source. The electrochemical reduction mechanism of Si(IV) was studied by cyclic voltammetry and chronoamperometry technology. The effect of reaction temperature on the phase composition, microstructure, and growth kinetics of the electrodeposited coatings were investigated in detail. The long-term oxidation behaviors of Mo and MoSi2-coated Mo samples at 873 K were also compared. The results revealed that the electrodeposition of silicide coatings was closely related to the reaction temperature. Dense and coherent single-layer MoSi2 coatings could be obtained at 1023 and 1073 K, while double-layer coatings with inner MoSi2 layer and outer Si layer could be obtained at 1123 K. Under the same electrodeposition time, the overall thickness of the silicide coatings increased with the reaction temperature. Moreover, long-term oxidation tests at 873 K proved that MoSi2 coatings could effectively prevent the Mo substrate from pest oxidation. The mass gain of the MoSi2-coated Mo sample was only 0.46 wt.% after 500 h of oxidation, which could be attributed to the formation of the continuous SiO2 protective layer.

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In-situ synthesis of MoSi2 coating on molybdenum substrate by electro-deoxidation of a SiO2 layer in molten salt

Cited by 15 publications

References 23 publications

Microstructure Engineered Silicon Alloy Anodes for Lithium‐Ion Batteries: Advances and Challenges

Microstructure Engineered Silicon Alloy Anodes for Lithium‐Ion Batteries: Advances and Challenges

Recent Developments on Molten Salt Synthesis of Inorganic Nanomaterials: A Review

Effect of Reaction Temperature on the Molten Salt Electrodeposition of Silicide Coating on Molybdenum Substrate and its Oxidation Behavior

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