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Binner, Jon; Zhang, Y.

doi:10.1023/a:1006734100499

Cited by 107 publications

(37 citation statements)

References 8 publications

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“…As it is shown in Table , with increasing Si/P ratio, the contribution of the Si–N 4 species does not show obvious change for the three LiSiPON films, while the decrease of the Si–O–Li is counter‐balanced by the increase of the O x –Si–N y tetrahedron species. We did not find obvious peak related to SiO 2 (Si–O 4 tetrahedron), which should be positioned at above 103.0 eV .…”

Section: Resultsmentioning

confidence: 53%

Electrochemical properties and optical transmission of high Li⁺ conducting LiSiPON electrolyte films

Su¹,

Falgenhauer²,

Leichtweiß

et al. 2016

Physica Status Solidi (b)

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Lithium silicon phosphorus oxynitride (LiSiPON) thin films with different compositions have been prepared by RF magnetron sputtering in N2 by using three targets xLi2SiO3 · (1 − x) Li3PO4 with x = 0.1, 0.3, and 0.5. Compared with LiPON, the electrical properties of LiSiPON have been improved by introducing silicon. LiSiPON films deposited from the target 0.5Li2SiO3 · 0.5Li3PO4 yield the highest ionic conductivity of up to 9.7 × 10−6 S cm−1 with an activation energy of only 0.41 eV. The main mechanism for increasing ionic conductivity is the enhancement of carrier mobility. By DC polarization measurements the electronic partial conductivity was found at least seven orders of magnitude smaller than the ionic conductivity. Linear voltammetry results showed that the LiSiPON films are electrochemically stable in contact with stainless steel in the voltage range of 0–6 V. The substitution of silicon for phosphorus in the film evidenced from X‐ray photoelectron spectroscopy analysis indicated silicon in the film will create more abundant cross‐linking structures Si–O–P and (P, Si)–N < (P, Si), hence created more Li+ conducting paths which favored the higher mobility of lithium ions and larger ionic conductivity. The optical bandgap was found to decrease with increasing silicon content. We demonstrate that the prepared LiSiPON films with their larger ionic conductivity and low electronic conductivity may serve as an alternative to LiPON for applications in high energy density and high voltage lithium batteries.

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Section: Resultsmentioning

confidence: 53%

Electrochemical properties and optical transmission of high Li⁺ conducting LiSiPON electrolyte films

Su¹,

Falgenhauer²,

Leichtweiß

et al. 2016

Physica Status Solidi (b)

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“…However, for pristine Si NPs, the formation of surface SiÀ OH groups through a dissociative chemisorption process in ambient environment also results in negative surface charge. [16] Therefore, the combination of Ti 3 C 2 T x nanosheets and pristine Si NPs without APTES functionalization cannot afford a strong adhesion due to their repulsion. Here, it should be pointed out that only by the drip adding for NH 2 À Si NP suspension, rather than one-step direct mixing, ordered multilayer NH 2 À Si/Ti 3 C 2 T x hybrid with the crosslinking structure could be prepared with sufficient time to achieve the electrostatic attraction of two species completely.…”

Section: Resultsmentioning

confidence: 99%

A Hybrid Assembly of MXene with NH₂−Si Nanoparticles Boosting Lithium Storage Performance

Cui

Wang

et al. 2020

Chemistry An Asian Journal

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A facile hybrid assembly between Ti 3 C 2 T x MXene nanosheets and (3-aminopropyl) triethoxylsilane-modified Si nanoparticles (NH 2 À Si NPs) was developed to construct multilayer stacking of Ti 3 C 2 T x nanosheets with NH 2 À Si NPs assembling together (NH 2 À Si/Ti 3 C 2 T x ). NH 2 À Si/Ti 3 C 2 T x exhibits a significantly enhanced lithium storage performance compared to pristine Si, which is attributed to the robust crosslinking architecture and considerably improved electrical conductivity as well as shorter Li + diffusion pathways. The optimized NH 2 À Si/Ti 3 C 2 T x anode with Ti 3 C 2 T x : NH 2 À Si mass ratio of 4 : 1 displays an enhanced capacity (864 mAh g À 1 at 0.1 C) with robust capacity retention, which is significantly higher than those of NH 2 À Si NPs and Ti 3 C 2 T x anodes. Furthermore, this work demonstrates the important effect of the MXene-based electrode architecture on the electrochemical performance and can guide future work on designing high-performance Si/MXene hybrids for energy storage applications.

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“…[25] And the shoulder peak at 283.5 eV ascribed to the CÀ Si bond [26] has lower intensity than that for SiC surface, further verifying the elimination of Si species to produce a C-rich surface. For SiO 2 / SiC support surface, a respective intense peak at 103.5 eV in Si 2p line ( Figure 2c) and at 532.6 eV in O 1s line ( Figure 2d) attributes to SiÀ O bond in SiO 2 , [27,28] indicating the existence of silica surface after thermal treatment in air. For SiC and C/SiC surfaces, the peak at the binding energy of 102.0 eV is deemed as silicon oxocarbide [29] instead of SiÀ C bond.…”

Section: Structural Characterizations Of the Supportsmentioning

confidence: 98%

Tailoring the Surface Structure of Silicon Carbide Support for Copper Catalyzed Ethanol Dehydrogenation

2018

ChemCatChem

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The production of acetaldehyde through biomass‐derived ethanol dehydrogenation is a sustainable alternative compared to the fossil‐feedstock based process, for which Cu‐based catalysts are considered to be the most efficient. Herein, we modified the surface of silicon carbide (SiC) to alter the properties of the interface from SiO2‐rich to C‐rich, and we prepared a series of Cu‐supported catalysts (Cu/SiC, Cu/SiO2/SiC, and Cu/C/SiC) with the aim of insight into the effect of the interface structure and composition on catalytic dehydrogenation of ethanol. At 280 °C, the Cu/SiO2/SiC catalyst exhibits high ethanol conversion due to the excellent dispersion of Cu nanoparticles promoted by SiO2‐rich interface. In contrast, Cu nanoparticles dispersed on C/SiC shows somewhat lower activity but excellent acetaldehyde selectivity with trace amounts of by‐products under identical reaction conditions. This difference is attributed to the fast removal of acetaldehyde because of its low affinity for the relatively inert C‐rich interface (C/SiC). This work provides an in‐depth understanding of Cu−Si−C multi‐interfacial structure and the ethanol dehydrogenation behavior, which may shed light on the design of novel catalysts with tailored interfacial structures.

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Cited by 107 publications

References 8 publications

Electrochemical properties and optical transmission of high Li⁺ conducting LiSiPON electrolyte films

Electrochemical properties and optical transmission of high Li⁺ conducting LiSiPON electrolyte films

A Hybrid Assembly of MXene with NH₂−Si Nanoparticles Boosting Lithium Storage Performance

Tailoring the Surface Structure of Silicon Carbide Support for Copper Catalyzed Ethanol Dehydrogenation

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Untitled

Cited by 107 publications

References 8 publications

Electrochemical properties and optical transmission of high Li+ conducting LiSiPON electrolyte films

Electrochemical properties and optical transmission of high Li+ conducting LiSiPON electrolyte films

A Hybrid Assembly of MXene with NH2−Si Nanoparticles Boosting Lithium Storage Performance

Tailoring the Surface Structure of Silicon Carbide Support for Copper Catalyzed Ethanol Dehydrogenation

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Product

Resources

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Electrochemical properties and optical transmission of high Li⁺ conducting LiSiPON electrolyte films

Electrochemical properties and optical transmission of high Li⁺ conducting LiSiPON electrolyte films

A Hybrid Assembly of MXene with NH₂−Si Nanoparticles Boosting Lithium Storage Performance