Preparation and electrochemical properties of Si@C/CNTs composites derived from crosslinked chitosan

Yang, Yuhang; Zhang, Xian; Cheng, Zihao; Wen, Zihui; Yu, Jiage; Wang, Feng; Ding, Yu

doi:10.1016/j.jallcom.2022.165212

Cited by 5 publications

(3 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The additional Ar purification by passing gas flow through active metal (Zr, Ti, Mg etc) shavings could prevent the issue. Second, the screening the AlF molecules and dissipation its kinetic energy by impacting with inert argon causes the suppression of reaction (6). Consequently, in conditions of aluminum monofluoride deficiency, the following reaction (11) can take place.…”

Section: 2gas-phase Synthesismentioning

confidence: 99%

“…The other approach to increase the stability of silicon-based anode materials is the use of nanosized structures, since the increase in volume during lithiation of nanoparticles with a size within 1 μm is reduced compared to larger particles [3,4]. Nanostructures able to withstand the strain caused by a change in the volume of silicon anodes upon introducing lithium without deteriorating the electrochemical properties of the electrode include nanowires [5][6][7][8][9][10][11], nanofibers [12][13][14][15], nanotubes [12,[14][15][16][17][18] and thin films [19 -26].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Silicon Whiskers Extraction From Silica by Novel Simple Technology

Kudyakova

Vagizova

Шишкин

2023

Silicon

View full text Add to dashboard Cite

Si dendrites and whiskers were obtained by interaction of gaseous AlF with SiO2 during transport chemical reaction, using Al, AlF3 and SiO2 as starting materials. The dependence of the reaction yield on such technological parameters as temperature, transport gas flow-rate, reactor chamber pressure and molar ratio of the initial compounds was determined. The thermodynamic simulation of processes in reaction chamber was performed by the HSC Chemistry program using HSC-Reaction and HSC-Gibbs modules. Reaction products were characterized by X-ray powder diffraction and scanning electron microscopy. Obtained Si crystallizes as dendrites and whiskers with diameters varying in 100 nm -24 μm range. The obtained data shows perspectives for adaptation of the proposed technology for production of Si anode material; moreover, the mechanism of proposed synthesis method can be improved for one-stage production of Si/C composite by using CO2 in process as C source as well as development of a novel CO2 utilization technology.

show abstract

Section: 2gas-phase Synthesismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Silicon Whiskers Extraction From Silica by Novel Simple Technology

Kudyakova

Vagizova

Шишкин

2023

Silicon

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

High purity silicon whiskers extraction from silica by novel simple technology

Kudyakova

Vagizova

Шишкин

2022

Preprint

View full text Add to dashboard Cite

Si dendrites and whiskers were obtained by interaction of gaseous AlF with SiO2 during transport chemical reaction, using Al, AlF3 and SiO2 as starting materials. The dependence of the reaction yield on such technological parameters as temperature, transport gas flow-rate, reactor chamber pressure and molar ratio of the initial compounds was determined. The thermodynamic simulation of processes in reaction chamber was performed by the HSC Chemistry program using HSC-Reaction and HSC-Gibbs modules. Reaction products were characterized by X-ray powder diffraction and scanning electron microscopy. Obtained Si crystallizes as dendrites and whiskers with diameters varying in 100 nm – 24 µm range. The obtained data shows perspectives for adaptation of the proposed technology for production of Si anode material; moreover, the mechanism of proposed synthesis method can be improved for one-stage production of Si/C composite by using CO2 in process as C source as well as development of a novel CO2 utilization technology.

show abstract