Improved electrical and thermal properties of silicon oxycarbide/spodumene composites

Mazo, M. Alejandra; Caballero, A. C.; Rubio, Juan

doi:10.1016/j.jeurceramsoc.2023.04.028

Cited by 5 publications

(3 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Continuous graphene length, including tortuosity ( L eq ) [ 57 ], the average distance between defects ( L D ) [ 55 ], and 3D-ordering of the graphene layers (Δ W 2 D −1 ) [ 53 ] are other less common parameters. These Raman parameters have started appearing in recent literature for SiOC-derived materials [ 20 , 58 , 59 , 60 , 61 ]. However, to the best of our knowledge, it is the first time that these parameters have been employed in SiOC-CD materials.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 6 indicates the Raman spectra of (a) SiOC and (b) SiOC-DC materials, respectively, pyrolyzed at different temperatures. Following the same criteria employed in previous work [ 58 ], a single Lorentz fitting was performed over the Raman spectra, and the calculated derived parameters are shown in Table 3 . The values included in Table 3 are the position (cm −1 ), full width at half intensity ( W ) (cm −1 ) of the D, G, and 2D bands; L a (nm); L eq (nm); L D (nm); ∆ W 2 D −1 (cm); and the I 2 D / I G ratio.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Highly Porous Carbon Materials Derived from Silicon Oxycarbides and Effect of the Pyrolysis Temperature on Their Electrochemical Response

Merida,

Colomer,

Rubio

et al. 2023

IJMS

Self Cite

View full text Add to dashboard Cite

The design of a material porous microstructure with interconnected micro-meso-macropores is a key issue for the successful development of carbon-derived materials for supercapacitor applications. Another important issue is the nature of these carbon materials. For those reasons, in this study, novel hierarchical micro-meso-macroporous silicon oxycarbide-derived carbon (SiOC-DC) was obtained via chlorine etching of carbon-enriched SiOC prepared via pyrolysis (1100–1400 °C) of sol-gel triethoxysilane/dimethyldiphenysiloxane hybrids. In addition, and for the first time, non-conventional Raman parameters combined with the analysis of their microstructural characteristics were considered to establish their relationships with their electrochemical response. The sample pyrolyzed at 1100 °C showed planar and less-defective carbon domains together with the largest specific surface area (SSA) and the highest volume of micro-meso-macropores, which upgraded their electrochemical response. This sample has the highest specific capacitance (Cs = 101 Fg−1 (0.2 Ag−1)), energy (Ed = 12–7 Wh−1 kg−1), and power densities (Pd = 0.32–35 kw kg−1), showing a good capacitance retention ratio up to 98% after 10,000 charge–discharge cycles at 0.5 Ag−1. At a pyrolysis temperature ≥ 1200 °C, the carbon domains were highly ordered and tortuous with a high degree of interconnection. However, SSA and pore volumes (micro-meso-macropores) were significantly reduced and downgraded the Cs, Ed, and Pd values.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Highly Porous Carbon Materials Derived from Silicon Oxycarbides and Effect of the Pyrolysis Temperature on Their Electrochemical Response

Merida,

Colomer,

Rubio

et al. 2023

IJMS

Self Cite

View full text Add to dashboard Cite

show abstract

“…SiOC thin films can be integrated into semiconductor devices and electronic components. 16 The controlled deposition process ensures uniformity, and the optimized hydrogen flow rate contributes to the film's structural and electrical properties. This makes the coating suitable for applications in microelectronics and semiconductor manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Effect of hydrogen flow rate on properties of silicon oxycarbide thin films via hot wire chemical vapor deposition

Garcia Balderas,

Morales Ruiz,

Rosendo Andres

et al. 2024

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

This study explores the impact of hydrogen flow as a carrier gas on silicon oxycarbide thin films produced via hot wire chemical vapor deposition (HWCVD) using tetraethyl orthosilicate as a precursor. Systematically varying the hydrogen flow rates, the influence on thin film composition, microstructure, and optical properties is investigated. Employing diverse characterization techniques, such as X‐ray diffraction, field‐emission scanning electron microscopy (FE‐SEM), energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared (FTIR), X‐ray photoelectron spectroscopy (XPS), ellipsometry, and photoluminescence (PL) spectroscopy, it is revealed that there is a correlation between hydrogen flow rate and thin film elemental composition. Higher hydrogen flow rates result in increased silicon content and reduced contributions of oxygen and carbon. FE‐SEM images show agglomerates with improved homogeneity at higher flow rates. FTIR spectra highlight distinctive vibrational modes, including Si–H bonds. XPS confirms the emergence of Si–H bonds at elevated hydrogen flow rates. Ellipsometry indicates increased thickness and refractive index. PL spectra exhibit a broadband across the visible spectrum, influenced by hydrogen‐related defects and electronic transitions. This study provides findings for optimizing HWCVD parameters to tailor thin films for specific applications, emphasizing the important role of hydrogen flow as a carrier gas.

show abstract

Achieving high electrothermal and mechanical performance for Graphene/Poly(hexamethylene terephthalamide) composite films via interfacial engineering with two-dimensional polyarylamide nanosheets

Zhou,

He,

Yang

et al. 2025

Carbon

View full text Add to dashboard Cite

Improved electrical and thermal properties of silicon oxycarbide/spodumene composites

Cited by 5 publications

References 65 publications

Highly Porous Carbon Materials Derived from Silicon Oxycarbides and Effect of the Pyrolysis Temperature on Their Electrochemical Response

Highly Porous Carbon Materials Derived from Silicon Oxycarbides and Effect of the Pyrolysis Temperature on Their Electrochemical Response

Effect of hydrogen flow rate on properties of silicon oxycarbide thin films via hot wire chemical vapor deposition

Achieving high electrothermal and mechanical performance for Graphene/Poly(hexamethylene terephthalamide) composite films via interfacial engineering with two-dimensional polyarylamide nanosheets

Contact Info

Product

Resources

About