Secondary electron emission of tin and tin-lithium under low energy helium plasma exposure

Kvon, Vladimir; Oyarzábal, E.; Zoethout, E.; Martín-Rojo, A.B.; Morgan, T.W.; Tabarés, F.L.

doi:10.1016/j.nme.2017.09.005

Cited by 10 publications

(8 citation statements)

References 29 publications

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“…The reason that Li coverage increases at higher temperature is because Li may reduce the surface tension more effectively than Sn. 20,23 Notably, in the high-concentration Li-Sn system, the surface coverage of D is twice more than that of Sn, although the total number of Sn atoms is slightly larger than the number of D atoms.…”

Section: Resultsmentioning

confidence: 99%

“…However, the Li-Sn alloy has been investigated in a few experiments. [20][21][22][23][24] Therefore, it is of great help to utilize firstprinciples computational methods to provide fundamental insights into understanding liquid metals [25][26][27] and their interactions with hydrogen isotopes. [28][29][30][31] Experiments have found that hydrogen isotopes interact differently with liquid Li and liquid Sn.…”

Section: Introductionmentioning

confidence: 99%

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Retention and Recycling of Deuterium in Liquid Lithium-Tin Slab Studied by First-Principles Molecular Dynamics

Zheng,

Shen,

Chen

et al. 2020

Preprint

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Understanding the retention and recycling of hydrogen isotopes in liquid metal plasma-facing materials such as liquid Li, Sn, and Li-Sn are of fundamental importance in designing magnetically confined fusion reactors. We perform first-principles molecules dynamics simulations of liquid Li-Sn slab with inserted D atoms to provide microscopic insights into the interactions of D with Li-Sn liquid metal. We observe evaporation of D 2 and LiD molecules out of the Li-Sn slabs. With detailed analysis, we unveil a cooperative process of forming D 2 molecules in liquid Li-Sn, where Li atoms act as catalytic centers to trap a D atom before another D comes nearby to form a molecule, and the surplus charges are transferred from D 2 to nearby Sn atoms. Furthermore, we predict a temperature window in which D 2 molecules can escape to vacuum, while LiD molecules cannot.The above findings deepen our understanding of interactions between hydrogen isotopes and Li-Sn liquid metal.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Retention and Recycling of Deuterium in Liquid Lithium-Tin Slab Studied by First-Principles Molecular Dynamics

Zheng,

Shen,

Chen

et al. 2020

Preprint

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“…[56][57][58] Two minor peaks located at 484.3 eV (Sn 3d 5/2 ) and 493 eV (Sn 3d 3/2 ) correspond to the existence of metallic Sn/Sn-Li alloys within the SEI layer. [59][60][61][62][63] Additionally, the peaks located at 55.4 and 531.4 eV, which correspond to Li 1s (Figure S13a, Supporting Information) and O 1s (Figure S13b, Supporting Information), respectively, imply the existence of LiO, LiSn and SnO bond over the SEI layer (may include some Li 2 O). [64][65][66][67][68] The lack of signals in the S 2p region (shown in Figure S13c, Supporting Information) rules out the presence of sulfides (≈162 eV) or polysulfides on the surface of the anode [69] due to DMSO decomposition.…”

Section: Characterization Of Anodementioning

confidence: 99%

Novel Co‐Catalytic Activities of Solid and Liquid Phase Catalysts in High‐Rate Li‐Air Batteries

Zhang

Jaradat

Singh

et al. 2022

Advanced Energy Materials

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Li‐air batteries are considered strong candidates for the next‐generation energy storage systems designed for electrical transportation. However, low cyclability and current rates are two major drawbacks that hinder them from further realization. These issues necessitate the discovery of novel materials to significantly enhance the redox process of discharge products. In this study, a novel catalytic system comprised of tin sulfide (SnS) nanoflakes as a solid catalyst and tin iodide (SnI2) as a dual‐functional electrolyte additive is discovered. This system enables operating the battery at high current rates up to 10 000 mA g−1 (corresponding to 1 mA cm−2). The SnS catalyst shows outstanding catalytic activity for both oxygen reduction and evolution reactions compared to carbon, noble metals, and other transition metal dichalcogenides. It also exhibits good structural integrity at high rates. The computations indicate numerous possible oxygen reduction sites without oxygen dissociations on the SnS surface through solution mechanism that is likely responsible for the formation of Li2O2. The calculations also indicate that the role of the SnI2 is not only reacting with the lithium anode to provide protection but reducing the charge potential by promoting catalytic decomposition of the Li2O2. This work provides new novel additives for designing high‐rate Li‐air batteries.

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“…Even the recent SEY data measured under much better experimental conditions also show considerable discrepancies. 6–27 Therefore, it is very necessary to find a way to sort out more reliable data from the scattered experimental data. The central limit theorem guarantees that the statistical average of a large amount of data yields the true value with certain uncertainty.…”

Section: Introductionmentioning

confidence: 99%

Exploring the absolute yield curve of secondary electrons using machine learning methods

Mehnaz

Ding

2023

Phys. Chem. Chem. Phys.

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Secondary electron emission of tin and tin-lithium under low energy helium plasma exposure

Cited by 10 publications

References 29 publications

Retention and Recycling of Deuterium in Liquid Lithium-Tin Slab Studied by First-Principles Molecular Dynamics

Retention and Recycling of Deuterium in Liquid Lithium-Tin Slab Studied by First-Principles Molecular Dynamics

Novel Co‐Catalytic Activities of Solid and Liquid Phase Catalysts in High‐Rate Li‐Air Batteries

Exploring the absolute yield curve of secondary electrons using machine learning methods

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