X-ray Photoelectron Spectroscopy Study of Optical Waveguide Glasses

Kibel, Martyn H.; Leech, Patrick W.

doi:10.1002/(sici)1096-9918(19960916)24:9<605::aid-sia161>3.0.co;2-k

Cited by 55 publications

(22 citation statements)

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“…; 46 the O 1s spectra show the corresponding SiO 2 peak (533 eV). 47 The Si 2p and O 1s spectra at OCV and 0.8 V show minimal changes, which suggests that the native oxide layer remains intact, consistent with our XRR results. The small amount of Li and F present at the surface at 0.8 V is attributed to residual electrolyte even after DMC washing 48 and the formation of organic SEI, as well as possibly small amounts of electrolyte decomposition.…”

Section: Linear Sweep Voltammetrysupporting

confidence: 84%

Solid Electrolyte Interphase on Native Oxide-Terminated Silicon Anodes for Li-Ion Batteries

Cao

Abate

Sivonxay

et al. 2019

Joule

225

173

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The solid electrolyte interphase (SEI) is a passivation layer naturally formed on battery electrodes. It protects electrodes and electrolytes from degradation and dictates charging time capabilities and lifetime. Despite its importance, it remains a poorly understood battery component. This study provides novel insights into the formation, morphology, and composition of the SEI on Si anodes through a multi-modal approach. The findings show a layered SEI and the ion and electron conductivities, as well as their relation to performance, are discussed.

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Section: Linear Sweep Voltammetrysupporting

confidence: 84%

Solid Electrolyte Interphase on Native Oxide-Terminated Silicon Anodes for Li-Ion Batteries

Cao

Abate

Sivonxay

et al. 2019

Joule

225

173

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“…The peak at about 533 eV represents the H 2 O adsorbed on the catalyst surface. In samples 1 and 2, as shown in Figure 5C, the component of O 1s at~532.4 eV represents SiO 2 on the SiC particle surface, and the peak of O 1s at~533.0 eV denotes SiO 2 [38]. The high ratio of SiO 2 /SiC can be observed in the O/Si atomic ratio in Table I.…”

Section: Comprehensive Characterizationmentioning

confidence: 92%

Study on CuO-CeO₂/SiC catalysts in the sulfur-iodine cycle for hydrogen production

Zhang

Zhou

et al. 2016

Int. J. Energy Res.

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Summary The structure and activity of ceria–copper oxides supported on nanometer silicon carbide (nano‐SiC) particles for sulfuric acid decomposition were studied. The promoting activities and stabilities of CuO–CeO2 complex oxides loaded on nano‐SiC grains were prominently higher than those of CuO–CeO2 without carriers, especially at <800 °C. The results of X‐ray diffraction (XRD), transmission electron microscopy (TEM), and high resolution transmission electron microscopy (HRTEM) showed that copper‐cerium composite oxides grains were well dispersed and fixed on the surface of SiC particle, and the average sizes of CuO–CeO2 complex oxides carried by SiC particles were considerably smaller than those of CuO–CeO2 without carriers. Based on the analysis of HRTEM images, X‐ray photoelectron spectroscopy (XPS) spectra, and infrared radiation (IR) pattern, the majority of SiC surfaces were converted to SiO2 layers, in which CeO2 grains immobilized by coordination bonding Ce–O–Si bridges. From the temperature programmed reduction (TPR) patterns, compared with those of CuO–CeO2 without carrier, the reduction temperature of CuO to Cu2O in CuO–CeO2/SiC catalysts was lowered, especially at (Ce + Cu)/SiC atomic ratio of 5 mol.%. The catalysts also showed relatively high activities at 727 °C for 20 h of continuous operation. A mechanism of SO3 decomposition on CuO–CeO2/SiC was proposed according to the characterization results. Copyright © 2016 John Wiley & Sons, Ltd.

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“…The detected peak maxima of the Si 2p peaks are in the upper range, as usually observed for SiO 2 and silicates. [62,63] Notably, in all materials the broad halfwidth of the Si 2p element spectra indicates a variation of bonding states of the silicabased material, thus demonstrating different electron densi- 29 Si NMR spectrum of the hybrid materials such as F shows signals at d = À94 ppm (Q 2 ), d = À100 ppm (Q 3 ), and d = À109 ppm (Q 4 ) ( Figure 11). The signals for Q 2/3 are indicative of an incompletely condensed silicon oxide phase (SiÀOH or Si(OH) 2 moieties) and the Q 4 signal is typical for fully condensed SiO 2 .…”

Section: Oxidation Reactionsmentioning

confidence: 99%

Tin Oxide Nanoparticles and SnO₂/SiO₂ Hybrid Materials by Twin Polymerization Using Tin(IV) Alkoxides

et al. 2013

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Twin polymerization was used to prepare composite materials composed of SnO2 nanoparticles entrapped in a polymer matrix. Novel, well‐defined tin‐containing molecular precursors, so‐called twin monomers, were synthesized by transesterification starting from Sn(OR)4 (R=tBu, tAm) to give Sn(OCH2C4H3O)4 (1), [Sn(OCH2C4H3S)4⋅HOCH2C4H3S]2 (2), [Sn(OCH2‐2‐OCH3C6H4)4⋅HOCH2‐2‐OCH3C6H4]2 (3), [Sn(OCH2‐2,4‐(OCH3)2C6H3)4⋅HOCH2‐2,4‐(OCH3)2C6H3]2 (4), 2,2′‐spirobi[4H‐1,3,2‐benzodioxastannine] (5), 2,2′‐spirobi[6‐methylbenzo(4H‐1,3,2)‐dioxastannine] (6), and 2,2′‐spirobi[6‐methoxybenzo(4H‐1,3,2)dioxastannine] (7). 13C and 119Sn NMR spectroscopy in the solid state and in solution as well as IR spectroscopy and elemental analysis were used to characterize the tin alkoxides. The molecular structures of compounds 2 and 3 were determined by single‐crystal X‐ray diffraction analysis. The moisture sensitivity of the tin(IV) alkoxides was demonstrated by the formation of the tin oxocluster [Sn3(μ3‐O)(μ2‐OH)(μ2‐OCH2C4H3S)3(OCH2C4H3S)6(HOCH2C4H3S)]2 (2 a), a hydrolysis product of compound 2. Polymerization reactions in the melt (for 1 and 5) and in solution (for 2–4) resulted in cross‐linked nanocomposites of the type polymer/SnO2. Subsequent oxidation of the composites gave SnO2 with BET surface areas up to 178 m2 g−1. Simultaneous twin polymerization of compounds 5–7 with the silicon derivative 2,2′‐spirobi[4H‐1,3,2‐benzodioxasiline] resulted in the formation of polymer/SnO2/SiO2 hybrid materials. Oxidation gave porous materials with SnO2 nanoparticles embedded in a silica network with BET surface areas up to 378 m2 g−1. The silica acts as a crystal growth inhibitor, which prevents sintering of the SnO2 nanoparticles 20–32 nm in size.

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X-ray Photoelectron Spectroscopy Study of Optical Waveguide Glasses

Cited by 55 publications

References 0 publications

Solid Electrolyte Interphase on Native Oxide-Terminated Silicon Anodes for Li-Ion Batteries

Solid Electrolyte Interphase on Native Oxide-Terminated Silicon Anodes for Li-Ion Batteries

Study on CuO-CeO₂/SiC catalysts in the sulfur-iodine cycle for hydrogen production

Tin Oxide Nanoparticles and SnO₂/SiO₂ Hybrid Materials by Twin Polymerization Using Tin(IV) Alkoxides

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X-ray Photoelectron Spectroscopy Study of Optical Waveguide Glasses

Cited by 55 publications

References 0 publications

Solid Electrolyte Interphase on Native Oxide-Terminated Silicon Anodes for Li-Ion Batteries

Solid Electrolyte Interphase on Native Oxide-Terminated Silicon Anodes for Li-Ion Batteries

Study on CuO-CeO2/SiC catalysts in the sulfur-iodine cycle for hydrogen production

Tin Oxide Nanoparticles and SnO2/SiO2 Hybrid Materials by Twin Polymerization Using Tin(IV) Alkoxides

Contact Info

Product

Resources

About

Study on CuO-CeO₂/SiC catalysts in the sulfur-iodine cycle for hydrogen production

Tin Oxide Nanoparticles and SnO₂/SiO₂ Hybrid Materials by Twin Polymerization Using Tin(IV) Alkoxides