Infrared optical properties of SiO2 films on silicon substrate under different temperatures

Jiang, Yugang; Liu, Huasong; Bai, Jinlin; Yang, Xiao; Chen, Dan; He, Jiahuan; Wang, Lishuan; Liu, Dandan

doi:10.1117/1.oe.61.3.031204

Cited by 3 publications

(2 citation statements)

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“…Fourier-transform infrared spectroscopy (FTIR) (Figure S7b) shows distinct peaks corresponding to O−H (3445 cm −1 ), C−H (2928 cm −1 ), C−F (1253 cm −1 ), and Si−O−Si (1092 cm −1 ). 30 These are in line with the results from the Raman spectrum (Figure S7b), 31,32 suggesting the successful integration of −OH and −F groups into the Janus mesopore channels. Strong interaction between the Zn substrate and mesopore SiO 2 layer is further revealed by the Si−O−Zn bond located at 531 eV in the O 1s XPS spectra (Figure S8).…”

Section: Synthesis and Characterizations Of The Janus Msiosupporting

confidence: 83%

“…Meanwhile, a pore-to-pore distance of 4.71 nm, by small-angle X-ray scattering (SAXS, Figure S7a), is consistent with the TEM results. Fourier-transform infrared spectroscopy (FTIR) (Figure S7b) shows distinct peaks corresponding to O–H (3445 cm –1 ), C–H (2928 cm –1 ), C–F (1253 cm –1 ), and Si–O–Si (1092 cm –1 ) . These are in line with the results from the Raman spectrum (Figure S7b), , suggesting the successful integration of −OH and −F groups into the Janus mesopore channels.…”

Section: Resultsmentioning

confidence: 95%

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Tandem Chemistry with Janus Mesopores Accelerator for Efficient Aqueous Batteries

Wang,

Zhang,

Zhou

et al. 2024

J. Am. Chem. Soc.

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A reliable solid electrolyte interphase (SEI) on the metallic Zn anode is imperative for stable Zn-based aqueous batteries. However, the incompatible Zn-ion reduction processes, scilicet simultaneous adsorption (capture) and desolvation (repulsion) of Zn 2+ (H 2 O) 6 , raise kinetics and stability challenges for the design of SEI. Here, we demonstrate a tandem chemistry strategy to decouple and accelerate the concurrent adsorption and desolvation processes of the Zn 2+ cluster at the inner Helmholtz layer. An electrochemically assembled perforative mesopore SiO 2 interphase with tandem hydrophilic −OH and hydrophobic −F groups serves as a Janus mesopores accelerator to boost a fast and stable Zn 2+ reduction reaction. Combining in situ electrochemical digital holography, molecular dynamics simulations, and spectroscopic characterizations reveals that −OH groups capture Zn 2+ clusters from the bulk electrolyte and then −F groups repulse coordinated H 2 O molecules in the solvation shell to achieve the tandem ion reduction process. The resultant symmetric batteries exhibit reversible cycles over 8000 and 2000 h under high current densities of 4 and 10 mA cm −2 , respectively. The feasibility of the tandem chemistry is further evidenced in both Zn//VO 2 and Zn//I 2 batteries, and it might be universal to other aqueous metal-ion batteries.

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Section: Synthesis and Characterizations Of The Janus Msiosupporting

confidence: 83%