Related Experiment Video
Updated: Oct 16, 2025
11:29
Novel 3D/VR Interactive Environment for MD Simulations, Visualization and Analysis
Published on: December 18, 2014
12.1K
Constructing 3D Interconnected Si/SiOx /C Nanorings from Polyhedral Oligomeric Silsesquioxane
Xieji Lin1, Xinjian Chen2, Fan Zhang2
1Country State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, No. 15 North Third Ring Road East, Chaoyang District, Beijing, 100029, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|October 15, 2021
Summary
Polyhedral oligomeric silsesquioxane (POSS) was used to create novel Si/SiOₓ/C nanorings. These nanorings show promise as anodes for lithium-ion batteries, especially at low temperatures.
Area of Science:
- Materials Science
- Nanotechnology
- Electrochemistry
Background:
- Polyhedral oligomeric silsesquioxane (POSS) are versatile organic/inorganic hybrid materials.
- POSS offers unique molecular symmetry for nanomaterial design.
- Developing advanced anode materials is crucial for high-performance lithium-ion batteries (LIBs).
Purpose of the Study:
- To fabricate 3D interconnected Si/SiOₓ/C nanorings (NRs) using a bottom-up strategy.
- To investigate the potential of these nanorings as anode materials for LIBs.
- To evaluate the electrochemical performance of Si/SiOₓ/C NRs, particularly at low temperatures.
Main Methods:
- A bottom-up fabrication strategy using dodecaphenyl cage silsesquioxane (T₁₂-Ph) as the building block.
- AlCl₃-assisted aluminothermic reduction to form Si/SiOₓ/C NRs.
- Characterization of nanoring structure, diameter (≈165 nm), and elemental distribution.
- Electrochemical testing of Si/SiOₓ/C NRs as LIB anodes.
Main Results:
- Successfully synthesized 3D interconnected Si/SiOₓ/C NRs with uniform diameter and elemental distribution.
- Si/SiOₓ/C NRs demonstrated superior high-rate capacity and good cycle stability in LIBs.
- Achieved a high reversible capacity of 517.9 mAh g⁻¹ at -70 °C, with ≈50% capacity retention compared to 25 °C.
Conclusions:
- The developed Si/SiOₓ/C NRs offer a novel structural design for carbon-based nanomaterials.
- POSS-derived nanorings present a promising avenue for advanced LIB anode applications.
- The material exhibits excellent low-temperature performance, broadening possibilities for POSS applications.
