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Related Experiment Video

Updated: Jul 28, 2025

Epitaxial Nanostructured &#945;-Quartz Films on Silicon: From the Material to New Devices
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Atomic/Molecular Layer-Deposited Laminated Li2O-Lithicone Interfaces Enabling High-Performance Silicon Anodes.

Jiabin Fang1, Jianguo Li1, Lijun Qin1

  • 1Laboratory of Material Surface Engineering and Nanofabrication, Science and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Xi'an 710065, People's Republic of China.

ACS Applied Materials & Interfaces
|May 31, 2023
PubMed
Summary

Researchers developed a novel lithium-containing hybrid film using atomic layer deposition and molecular layer deposition for silicon anodes in lithium-ion batteries. This film enhances initial Coulombic efficiency and interfacial stability, improving battery performance and longevity.

Keywords:
Li-ion batteriesLi2O−lithicone hybrid filmatomic/molecular layer depositionlaminated interfacesilicon anodes

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Silicon anodes are promising for next-generation lithium-ion batteries due to high capacity.
  • Low initial Coulombic efficiency and poor interfacial stability hinder silicon anode performance.

Purpose of the Study:

  • To address limitations of silicon anodes by fabricating a protective hybrid film.
  • To improve initial Coulombic efficiency and interfacial stability of silicon anodes.

Main Methods:

  • Utilized atomic layer deposition (ALD) and molecular layer deposition (MLD) to create a Li2O-lithicone hybrid film.
  • Characterized interfacial components and analyzed stress relief using finite element modeling.
  • Investigated Li+ migration kinetics using galvanostatic intermittent titration and DFT calculations.

Main Results:

  • Achieved 91.2% initial Coulombic efficiency and sustained capacity over 646 mA h g-1 after 850 cycles.
  • Demonstrated enhanced interfacial stability and reduced stress in the silicon anode.
  • Observed fast Li+ migration kinetics facilitated by the hybrid film.

Conclusions:

  • The engineered lithium-based hybrid film significantly improves silicon anode performance.
  • ALD/MLD techniques offer precise control for advanced battery materials.
  • Understanding interfacial mechanisms is crucial for developing high-performance silicon anodes.