%0 Journal Article
%K lithium
%K lithium compounds
%K manganese compounds
%K polymers
%K secondary cells
%A Guoying Chen
%A Thomas J Richardson
%B Journal of Electrochemical Society
%D 2010
%G eng
%N 6
%P A735-A740
%R 10.1149/1.3392370
%T Overcharge Protection for 4 V Lithium Batteries at High Rates and Low Temperatures
%V 157
%X <p>Overcharge protection for 4 V Li<sub>1.05</sub>Mn<sub>1.95</sub>O<sub>4</sub>/lithium cells at charging rates in excess of 1 mA/cm<sup>2</sup> (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.</p>