Enhanced high-temperature cycle-life of mesophase graphite anode with styrene-butadiene rubber/carboxymethyl cellulose binder
Journal
ECS Electrochemistry Letters
Journal Volume
1
Journal Issue
6
Pages
A80-A82
Date Issued
2012
Author(s)
Abstract
Small (micron)-sized mesophase graphite (SMG) is combined with either styrene-butadiene rubber/carboxymethyl cellulose (SBR/CMC) or polyvinylidene difluoride (PVDF) binder to constitute the anodes for high-power Li-ion batteries. The binder effects on the electrochemical performance of the SMG/LiFePO4 18650-battery are evaluated. Using SBR/CMC binder reduces the first-cycle irreversible capacity loss and most surprisingly enhances the high-temperature (55?C) cycle-life of the battery. Surface analyzes suggest that the enhancements are consistent with reduced formation of the solid-electrolyte-interphase (SEI) layer on graphite anode, indicating that composition of binder can have significant influence on SEI formation on anode. ? 2012 The Electrochemical Society.
Type
journal article