Importing Tin Nanoparticles into Biomass‐Derived Silicon Oxycarbides with High‐Rate Cycling Capability Based on Supercritical Fluid Technology

Shi, Cheng; Huang, Hui; Xia, Yang; Yu, Jiage; Fang, Ruyi; Liang, Chao; Zhang, Jun; Gan, Yongping; Zhang, Wenkui

doi:10.1002/chem.201900786

Cited by 15 publications

(10 citation statements)

References 58 publications

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“…Figure 1A shows the XRD patterns of different SiOC samples prepared from three kinds of silicone. For all samples, a broad peak located around 22° and a weak peak of carbon was observed at 44°, indicating the successful synthesis of amorphous SiOC materials 17 . The morphologies of different SiOC samples were characterized by SEM, as shown in Figure 1B–D.…”

Section: Resultsmentioning

confidence: 88%

“…For all samples, a broad peak located around 22 • and a weak peak of carbon was observed at 44 • , indicating the successful synthesis of amorphous SiOC materials. 17 The morphologies of different SiOC samples were characterized by SEM, as shown in Figure 1B-D. It could be seen that the sizes of the particles ranged from 1 to 100 μm and the distributions of particles were not uniform.…”

Section: Resultsmentioning

confidence: 99%

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Electrochemical performance of SiOC anodes prepared by a different silicone

Zhang

Chen

Wei

et al. 2022

Int J Applied Ceramic Tech

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SiOC is one of the most promising anodes for lithium-ion batteries, which shows the good structural stability and high capacity comparing to commercial graphite anode. In this paper, different SiOC anodes (SiOC-217, SiOC-H44, and SiOC-MK) were prepared from polymer precursors with different side groups (phenyl, methyl-phenyl, methyl) to investigate the effects of free carbon on the electrochemical performance of SiOC anodes. The results of X-ray photoelectron spectroscopy presented that SiOC was composed by different SiO x C 4−x units and free carbon phase. The initial discharge capacity of SiOC-217 was 742.67 mA h g −1 .After 100 cycles, the reversible capacity of SiOC-217 reached 450.65 mA h g −1 at 0.2 C, indicating a capacity retention rate of 60.68%. After cycling at high current densities, SiOC-217 exhibited a high discharge capacity of 592.88 mA h g −1 at 0.1 C. SiOC-217 exhibited excellent electrochemical performance due to the high content of free carbon phase. Furthermore, the high contents of SiO 2 C 2 and SiO 3 C units further enhanced the improvement of electrochemical performance.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Electrochemical performance of SiOC anodes prepared by a different silicone

Zhang

Chen

Wei

et al. 2022

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

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“…This result, which is in good agreement with the CV analysis, also described the process of the action of Li ions in the SiO network. [ 30 ] The Coulombic efficiency of SiOC‐3 in the first cycle is 73.8%, which is rarely found in materials with polysiloxane as the precursor. [ 31 ] Only when it is compounded with other carbon materials, ICE of SiOC anodes can achieve exceed 70%, but such modification still sacrifices the specific capacity of the active material.…”

Section: Resultsmentioning

confidence: 99%

SiOC Phase Control and Carbon Nanoribbon Growth by Introducing Oxygen at Atom Level for Lithium‐Ion Batteries

Zheng

Shi

et al. 2022

Small Methods

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Poor intrinsic conductivity and the presence of irreversible lithiation phase affect the electrochemical performance of silicon oxycarbide anode materials. Even though it can be improved by increasing free carbon content or composition, scarification of reversible capacity and initial Coulombic efficiency (ICE) remain as challenge. Here, polycarbosilane (PCS) with alternating distribution of silicon and carbon atoms is employed as precursor of SiOC ceramics. Air oxidation cross‐linking is used to regulate the content of oxygen and carbon elements in PCS at atom level, so as to explore a solution to improve the intrinsic conductivity and reversible lithium phase content of SiOC ceramics. This strategy provides extremely excellent rate capability, areal/volumetric capacity, and ICE. This is also the first concept for feasible precursor structure design to control the SiOC glass phase and regulate the growth of C nanoribbon that can improve the intrinsic conductivity and reversible capacity of SiOC ceramic anode materials.

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“…Table 5 summarizes different nanomaterial types synthesized using the supercritical fluid and their applications. Breviscapine-loaded mesoporus silica nanoparticles 177 nm Spherical shape Drug delivery for cardiovascular diseases [197] Microbeads and nanoliposomes 1 µm (microbeads), 0.2 µm (nanoliposomes) Spherical shape Transporters for the delivery of a variety of drugs [200] Silicon oxycarbides (SiOC) 2-200 nm Irregular surface Improved electrochemical properties for Lithium storage materials [201] pH-responsive doxycycline-loaded chitosan nanoparticles 120-250 nm Spherical shape Improved adsorption properties for Chemotherapy [198] NUFS™-erlotinib nanoparticles 220-250 nm Round shape NUFS™-erlotinib more effectively prevents epidermal growth factor receptor (EGFR) signaling and inhibits the proliferation of the non-small cell lung cancer A549 cell line.…”

Section: Supercritical Fluid Synthesismentioning

confidence: 99%

Nanoparticle and Nanostructure Synthesis and Controlled Growth Methods

et al. 2022

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Nanomaterials are materials with one or more nanoscale dimensions (internal or external) (i.e., 1 to 100 nm). The nanomaterial shape, size, porosity, surface chemistry, and composition are controlled at the nanoscale, and this offers interesting properties compared with bulk materials. This review describes how nanomaterials are classified, their fabrication, functionalization techniques, and growth-controlled mechanisms. First, the history of nanomaterials is summarized and then the different classification methods, based on their dimensionality (0–3D), composition (carbon, inorganic, organic, and hybrids), origin (natural, incidental, engineered, bioinspired), crystal phase (single phase, multiphase), and dispersion state (dispersed or aggregated), are presented. Then, the synthesis methods are discussed and classified in function of the starting material (bottom-up and top-down), reaction phase (gas, plasma, liquid, and solid), and nature of the dispersing forces (mechanical, physical, chemical, physicochemical, and biological). Finally, the challenges in synthesizing nanomaterials for research and commercial use are highlighted.

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Importing Tin Nanoparticles into Biomass‐Derived Silicon Oxycarbides with High‐Rate Cycling Capability Based on Supercritical Fluid Technology

Cited by 15 publications

References 58 publications

Electrochemical performance of SiOC anodes prepared by a different silicone

Electrochemical performance of SiOC anodes prepared by a different silicone

SiOC Phase Control and Carbon Nanoribbon Growth by Introducing Oxygen at Atom Level for Lithium‐Ion Batteries

Nanoparticle and Nanostructure Synthesis and Controlled Growth Methods

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