A Polymer Layer of Switchable Resistance for the Overcharge Protection of Lithium-Ion Batteries

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Abstract

Abstract—The polymer layer based on a nickel complex with salen-type ligand is proposed for protecting rechargeable lithium-ion batteries from overcharge. This polymer has a switchable resistance and can pass into the insulator state when the threshold potential is exceeded. This allows avoiding the development of side processes such as electrolyte decomposition on the cathode. The effect of the polymer layer was tested on model systems and on prototypes of lithium-ion batteries.
Original languageEnglish
Pages (from-to)1028-1036
JournalRussian Journal of Electrochemistry
Volume57
Issue number10
DOIs
StatePublished - 2021

Keywords

  • conducting polymers
  • cathode with the positive temperature coefficient
  • safe cathode for lithium-ion battery
  • battery protection from overcharge
  • battery protection from short-circuit

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