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Related Experiment Video

Updated: Feb 2, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

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Published on: November 11, 2013

Surface-Functionalized Silicon Nanoparticles as Anode Material for Lithium-Ion Battery.

Sisi Jiang¹, Bin Hu, Ritu Sahore

¹Department of Chemistry , University of Tennessee , Knoxville , Tennessee 37996 , United States.

ACS Applied Materials & Interfaces

|November 29, 2018

Summary

Epoxy functionalization of silicon nanoparticles (SiNPs) via silanization improves battery performance and anode adhesion. This enhancement stems from increased electrolyte stability and covalent bonding with binders.

Keywords:

epoxy-functionalized surface lithium-ion battery nanosilicon particles silanization reaction silicon anode surface modification

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Area of Science:

Materials Science
Electrochemistry
Nanotechnology

Background:

Silicon nanoparticles (SiNPs) are promising anode materials for lithium-ion batteries due to their high theoretical capacity.
However, SiNPs suffer from poor cycling stability and volume expansion issues, limiting their practical application.

Purpose of the Study:

To enhance the electrochemical performance and mechanical stability of silicon nanoparticle anodes.
To investigate the effect of surface epoxy functionalization on SiNP properties and battery performance.

Main Methods:

Silanization reaction to attach epoxy groups to SiNP surfaces using functional silanes.
Fabrication of anode laminates using epoxy-functionalized SiNPs and polyacrylic acid binder.
Electrochemical testing and post-test analysis of anode performance and properties.

Main Results:

Epoxy-functionalized SiNPs exhibited significantly improved cell performance compared to pristine SiNPs.
Enhanced stability with the electrolyte was observed for epoxy-SiNPs.
Covalent bonding between epoxy groups and the binder improved anode adhesion strength and integrity.

Conclusions:

Surface epoxy functionalization is an effective strategy to improve silicon nanoparticle anode performance.
The enhanced properties are attributed to improved electrolyte compatibility and binder interaction.
Epoxy-functionalized SiNPs offer a pathway towards more stable and high-performance silicon-based batteries.