Overcharge Protection for 4 V Lithium Batteries at High Rates and Low Temperatures

Publication Type

Journal Article

Abstract

Overcharge protection for 4 V Li1.05Mn1.95O4/lithium cells at charging rates in excess of 1 mA/cm2 (3C) and at temperatures of as low as −20°C was achieved using a bilayer separator coated with two electroactive polymers. High rate and low temperature overcharge protection and discharge performance were improved by employing a design in which the polymer-coated portion of the separator is in parallel with the cell rather than between the electrodes. The effects of different membrane supports for the electroactive polymers were also examined.

Journal

Journal of Electrochemical Society

Volume

157

Year of Publication

2010
A735

Issue

6

Pagination

A735-A740