Electrochemistry of Conductive Polymers 46. Polymer Films as Overcharge Inhibitors for Lithium-Ion Rechargeable Batteries

Choi, Shin-Jung; Park, Su-Moon

doi:2010.1.1.1

J. Electrochem. Sci. Technol > Volume 1(1); 2010 > Article

Article

Journal of Electrochemical Science and Technology 2010;1(1):1-9.
DOI: https://doi.org/10.5229/JECST.2010.1.1.001

Electrochemistry of Conductive Polymers 46. Polymer Films as Overcharge Inhibitors for Lithium-Ion Rechargeable Batteries

Shin-Jung Choi, Su-Moon Park

Department of Chemistry, Pohang University of Science and Technology;Interdisciplinary School of Green Energy, Ulsan National Institute of Science & Technology;

Abstract

Conducting polymer films grown from various aromatic compounds have been evaluated as overcharge protecting additives for lithium ion rechargeable batteries. The polymer films were grown electrochemically under the conditions similar to those encountered during the overcharging processes of lithium batteries and subsequently characterized by potentiodynamic, electrochemical quartz crystal microbalance, electrochemical impedance spectroscopic, and scanning electron microscopic experiments. Results indicate that bicyclic and polycyclic aromatic hydrocarbons would be poor candidates for inhibitors, while biphenyl, terphenyl, and benzene derivatives displayed excellent performances. Mixed polymer films grown from o-terphenyl and p-xylene show the best performance among the candidates.

Keywords: Overcharge inhibitor, Conducting polymers, Passivation, Lithium batteries