Effects of adding HPC to Si-alloy anode slurry of lithium secondary battery

Geunyoung Park, Mi Jung Ji, Sung Hun Jung, Byeong Kwon Ju, Byung Hyun Choi

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1 Citation (Scopus)

Abstract

This study was carried out to analyze the effects of adding hydroxypropyl cellulose (HPC) on the rheology and dispersibility of the slurry and battery characteristics when fabricating an anode slurry containing Si alloy as the active material, a water-based binder, and deionized water as the solvent. The addition of HPC resulted in a reduction in the viscosity and excellent dispersion in the slurry. In the battery, the adhesiveness of the electrode and current collector was improved, and the initial capacity, polarization resistance, and cycling performance were improved. In addition, the expansion in thickness decreased. This was because HPC suppressed coagulation by steric hindrance and simultaneously acted as a binder by being adsorbed on the particle surfaces of the Si alloy and Ketjen black.

Original languageEnglish
Pages (from-to)A488-A492
JournalJournal of the Electrochemical Society
Volume162
Issue number3
DOIs
Publication statusPublished - 2015

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ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

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