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The Energy Technologies Area (ETA) is unique in translating fundamental scientific discoveries into scalable technology adoption. Our approach combines an understanding of the marketplace and the role of state and federal regulation and policies. ETA's research drives real-world, practical results that affect and improve the everyday lives of Americans and those across the globe. Saving energy and battling the Climate Crisis are key to the foundation of our research, which is driven by technoeconomic analysis and in-lab experimentation and discovery.

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

Publication Type

Journal Article

Authors

Chen, Guoying, Thomas J Richardson

DOI

10.1149/1.3392370

Abstract

Overcharge protection for 4 V Li_1.05Mn_1.95O₄/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

Issue

Organization

Energy Storage Group, Energy Storage and Distributed Resources Division