Adsorption and thermal decomposition of H2S on Si()

Lai, Ying‐Huang; Yeh, Chuin Tih; Lin, Yi; Hung, Wei Hsiu

doi:10.1016/s0039-6028(02)02208-2

Cited by 24 publications

(27 citation statements)

References 20 publications

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“…This feature did not change with annealing, indicating a similarly strong interaction between the two elements in both cases. While there is no direct support from literature, here we speculate that the reason of the enhanced Plasmon loss appeared in samples 2–4 is attributed to the interaction of Si with S. While it was not possible to find similar study to show interaction of Si and S, there were few studies that show possible reaction between silicon and sulfur 41 42 43 44 . The morphology investigated by SEM and pore size distribution investigated by Brunauer, Emmett and Teller (BET) were determined for the electrode before and after the SHT process, shown in Supplementary Figs 6 and 7 , respectively.…”

Section: Resultscontrasting

confidence: 50%

Evidence of covalent synergy in silicon–sulfur–graphene yielding highly efficient and long-life lithium-ion batteries

et al. 2015

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Silicon has the potential to revolutionize the energy storage capacities of lithium-ion batteries to meet the ever increasing power demands of next generation technologies. To avoid the operational stability problems of silicon-based anodes, we propose synergistic physicochemical alteration of electrode structures during their design. This capitalizes on covalent interaction of Si nanoparticles with sulfur-doped graphene and with cyclized polyacrylonitrile to provide a robust nanoarchitecture. This hierarchical structure stabilized the solid electrolyte interphase leading to superior reversible capacity of over 1,000 mAh g−1 for 2,275 cycles at 2 A g−1. Furthermore, the nanoarchitectured design lowered the contact of the electrolyte to the electrode leading to not only high coulombic efficiency of 99.9% but also maintaining high stability even with high electrode loading associated with 3.4 mAh cm−2. The excellent performance combined with the simplistic, scalable and non-hazardous approach render the process as a very promising candidate for Li-ion battery technology.

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Section: Resultscontrasting

confidence: 50%

Evidence of covalent synergy in silicon–sulfur–graphene yielding highly efficient and long-life lithium-ion batteries

et al. 2015

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“…On the other hand, the theoretical predictions of the present work have been confirmed partially for some authors [3,4,12,13,17]. For instance, it is well known from these experimental studies that an elevated content of hydrogen sulfide in the mixture yields a drop of the surface coverage of 0 H .…”

Section: Resultssupporting

confidence: 84%

“…Nelen et al [13] and Lai et al [17] have supported spectroscopic experimental evidence of this chemical dissociation, using metals in contact with a sour ambient composed basically by 2 H S and operating at room temperature or lower than it.…”

Section: H Smentioning

confidence: 89%

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Heterogeneous Decomposition of a Hydrogen Sulfide-Methane Sour Mixture Flowing in a Rectangular Channel

Martínez¹,

Méndez²,

Treviño³

2008

TOCENGJ

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Abstract:In this work, we analyze the heterogeneous conversion process of hydrogen sulfide acid, H 2 S , to atomic hydrogen, H 0 , in a binary gas mixture composed by the above acid component and methane gas. We consider that the sour mixture flows in a horizontal rectangular channel under a laminar, hydrodynamically fully-developed flow regime and the decomposition process takes place on the internal walls of the channel made by iron. The heterogeneous chemical activity on the metallic walls is conducted by a reactive scheme based on four reactions: one adsorption, two electrochemical, and an exothermic reaction needed to complete the conversion process. The longitudinal profiles of the species H 2 S and H 0 on the surfaces of the channel as functions of the nondimensional parameters involved in the present model, are shown. In addition, the surface coverages of the chemical products HS , H + and H 0 , together with the surface coverage of the vacancies derived from the chemical and electrochemical reactions are presented.

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“…It should be noted that the S concentration at the interface decreased with increasing annealing temperature from 600 to 700 °C. This is because S desorbed from the interface at high temperatures above 700 °C as reported previously . The S concentration at the interface increased with increasing H 2 S annealing temperature below 600 °C .…”

Section: Resultssupporting

confidence: 77%

Novel field‐effect passivation for nanostructured Si solar cells using interfacial sulfur incorporation

Kim

Song

Park

et al. 2017

Progress in Photovoltaics

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Surface passivation of a nanostructured Si solar cells plays a crucial role in collecting photogenerated carriers by mitigating carrier recombination at surface defect sites. Interface modification by additional sulfur (S) incorporation is proposed to enhance the field‐effect passivation performance. Here, we report that simple annealing in a H2S ambient induced additional negative fixed charges at the interface between atomic‐layer‐deposited Al2O3 and nanostructured Si. Annealing at various temperatures allowed us to control the S concentration and the fixed charge density. The optimized S incorporation at the interface significantly enhanced the negative fixed charge density and the minority carrier lifetime up to ~5.9 × 1012 cm−2 and ~780 μs, respectively. As a result, the internal quantum efficiency was nearly two times higher in the blue response region than that of control cells without S incorporation. Copyright © 2017 John Wiley & Sons, Ltd.

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Adsorption and thermal decomposition of H2S on Si()

Cited by 24 publications

References 20 publications

Evidence of covalent synergy in silicon–sulfur–graphene yielding highly efficient and long-life lithium-ion batteries

Evidence of covalent synergy in silicon–sulfur–graphene yielding highly efficient and long-life lithium-ion batteries

Heterogeneous Decomposition of a Hydrogen Sulfide-Methane Sour Mixture Flowing in a Rectangular Channel

Novel field‐effect passivation for nanostructured Si solar cells using interfacial sulfur incorporation

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