Tailoring the Surface of Silicon Nanoparticles for Enhanced Chemical and Electrochemical Stability for Li-Ion Batteries

Nathan Neale, Gregory Pach, Gerard Carroll, Sisi Hian, Bin Hu, Ritu Sahore, Lu Zhang, Bin Zhao, Zhengcheng Zhang, Haihua Liu

Research output: Contribution to journalArticlepeer-review

18 Scopus Citations

Abstract

Organic monolayers of epoxy-containing oligo(ethylene oxide)s were grafted to the surface of silicon nanoparticles via a hydrosilylation reaction. The surface functional groups suppressed the chemical and electrochemical reactivity of the as-grown and lithiated silicon nanoparticles with high material utilization. A robust Si/electrolyte interphase was formed with the participation of the grafted organic groups with facilitated Li+ transfer and was further enforced by electrode integrity via the epoxy/poly(acrylic acid) (PAA) binder reaction. The improved cycling stability and post-test analysis indicate that surface functionalization on the Si particle level is a feasible approach to enabling a Si anode in high-energy-density lithium-ion batteries.

Original languageAmerican English
Pages (from-to)6176-6183
Number of pages8
JournalACS Applied Energy Materials
Volume2
Issue number9
DOIs
StatePublished - 23 Sep 2019

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.

NREL Publication Number

  • NREL/JA-5900-73521

Keywords

  • chemical/electrochemical stability
  • Coulombic efficiency
  • cycling stability
  • epoxy-containing oligo(ethylene oxide)s
  • SEI formation
  • Si nanoparticles
  • surface functionalization

Fingerprint

Dive into the research topics of 'Tailoring the Surface of Silicon Nanoparticles for Enhanced Chemical and Electrochemical Stability for Li-Ion Batteries'. Together they form a unique fingerprint.

Cite this