Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1500257 | Scripta Materialia | 2011 | 4 Pages |
Abstract
Damage that occurs on graphite electrode surfaces during electrochemical cycling, simulating lithium-ion battery conditions, was observed in-situ using a digital microscope. Microscopical evidence revealed particle removal during the de-lithiation stage that continued until the potential difference, exerted on graphite, reduced beyond a critical value. The rate of graphite particle loss increased at a lower voltage scan rate. Experiments, initiating from the peak voltage, promoted formation of a surface film on graphite which reduced graphite degradation during the course of lithiation.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Sandeep Bhattacharya, A. Reza Riahi, Ahmet T. Alpas,