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Schipporeit, Sebastian; Mergel, Dieter

doi:10.1002/jrs.5453

Cited by 2 publications

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“…The peaks at 300, 520, and 960 cm −1 are associated with the vibration bands of polycrystalline Si. [38] All the specimens exhibit a carbon D-band signal at ≈1345 cm −1 and a carbon G-band signal at ≈1595 cm −1 . [39] The former is related to imperfect carbon bonding and the latter results from the Raman-allowed in-plane vibration of sp 2 carbon.…”

Section: Resultsmentioning

confidence: 91%

Supercritical CO₂‐Assisted SiO_x/Carbon Multi‐Layer Coating on Si Anode for Lithium‐Ion Batteries

Hernandha

Rath

Umesh

et al. 2021

Adv Funct Materials

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Supercritical CO2 (SCCO2), characterized by gas‐like diffusivity, low surface tension, and excellent mass transfer properties, is applied to create a SiOx/carbon multi‐layer coating on Si particles. Interaction of SCCO2 with Si produces a continuous SiOx layer, which can buffer Si volume change during lithiation/delithiation. In addition, a conformal carbon film is deposited around the Si@SiOx core. Compared to the carbon film produced via a conventional wet‐chemical method, the SCCO2‐deposited carbon has significantly fewer oxygen‐containing functional groups and thus higher electronic conductivity. Three types of carbon precursors, namely, glucose, sucrose, and citric acid, in the SCCO2 syntheses are compared. An eco‐friendly, cost‐effective, and scalable SCCO2 process is thus developed for the single‐step production of a unique Si@SiOx@C anode for Li‐ion batteries. The sample prepared using the glucose precursor shows the highest tap density, the lowest charge transfer resistance, and the best Li+ transport kinetics among the electrodes, resulting in a high specific capacity of 918 mAh g−1 at 5 A g−1. After 300 charge–discharge cycles, the electrode retains its integrity and the accumulation of the solid electrolyte interphase is low. The great potential of the proposed SCCO2 synthesis and composite anode for Li‐ion battery applications is demonstrated.

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Section: Resultsmentioning

confidence: 91%

Supercritical CO₂‐Assisted SiO_x/Carbon Multi‐Layer Coating on Si Anode for Lithium‐Ion Batteries

Hernandha

Rath

Umesh

et al. 2021

Adv Funct Materials

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“…Kumar et al used Raman scattering to study the influence of substrate on molecular order for self‐assembled adlayers of CoPc and FePc (metal phthalocyanine) thin films of about 50 nm thickness on technolically relevant substrates such as SiOx/Si, indium tin oxide, and polycrystalline gold . Schipporeit and Mergel studied the spectral decomposition of Raman spectra of mixed‐phase TiO 2 thin films on Si and silicate substrates …”

Section: Solid‐state Studiesmentioning

confidence: 99%

Recent advances in linear and nonlinear Raman spectroscopy. Part XIII

Nafie

2019

J Raman Spectroscopy

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This article is an overview of advances in Raman spectroscopy published in 2018 in the Journal of Raman Spectroscopy (JRS) and, in addition, trends over the past decade across journals that have published papers important to the field of Raman spectroscopy. The trends are based on statistical data of article counts obtained from Clarivate Analytic's Web of Science Core Collection byyear and by subfield of Raman spectroscopy. Coverage is provided for presentations involving Raman spectroscopy at four international conferences this published in JRS in 2018 are highlighted and arragned by topics at the frontier of Raman spectroscopy. Based on these data, presentations, and publications, it is clear that Raman spectroscopy continues as an expanding field of research across a wide range of novel disciplines and applications that provide sensitive photonic information at the molecular level.KEYWORDS advances in Raman spectroscopy, applications of Raman spectroscopy, developments in Raman spectroscopy, review

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Abstract: The back cover image, by Sebastian Schipporeit et al., is based on the Research Article Spectral decomposition of Raman spectra of mixed‐phase TiO2 thin films on Si and silicate substrates, https://doi.org/10.1002/jrs.5369.

Cited by 2 publications

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Supercritical CO₂‐Assisted SiO_x/Carbon Multi‐Layer Coating on Si Anode for Lithium‐Ion Batteries

Supercritical CO₂‐Assisted SiO_x/Carbon Multi‐Layer Coating on Si Anode for Lithium‐Ion Batteries

Recent advances in linear and nonlinear Raman spectroscopy. Part XIII

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Cover Image

Abstract: The back cover image, by Sebastian Schipporeit et al., is based on the Research Article Spectral decomposition of Raman spectra of mixed‐phase TiO2 thin films on Si and silicate substrates, https://doi.org/10.1002/jrs.5369.

Cited by 2 publications

References 0 publications

Supercritical CO2‐Assisted SiOx/Carbon Multi‐Layer Coating on Si Anode for Lithium‐Ion Batteries

Supercritical CO2‐Assisted SiOx/Carbon Multi‐Layer Coating on Si Anode for Lithium‐Ion Batteries

Recent advances in linear and nonlinear Raman spectroscopy. Part XIII

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Supercritical CO₂‐Assisted SiO_x/Carbon Multi‐Layer Coating on Si Anode for Lithium‐Ion Batteries

Supercritical CO₂‐Assisted SiO_x/Carbon Multi‐Layer Coating on Si Anode for Lithium‐Ion Batteries