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Nickel‐Salen Type Polymers as Cathode Materials for Rechargeable Lithium Batteries
Author(s) -
Eliseeva Svetla.,
Alekseeva Elena V.,
Vereshchagin Anatoliy A.,
Volkov Alexey I.,
Vlasov Petr S.,
Konev Alexander S.,
Levin Oleg V.
Publication year - 2017
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201700361
Subject(s) - nickel , supercapacitor , ethylene carbonate , electrolyte , polymer , substituent , redox , lithium (medication) , organic radical battery , inorganic chemistry , materials science , electrode , battery (electricity) , polymer chemistry , chemistry , chemical engineering , electrochemistry , organic chemistry , medicine , power (physics) , physics , quantum mechanics , engineering , endocrinology
Abstract The nickel salen‐type redox polymers represent an interesting class of organometallic polymers frequently used in hybrid supercapacitor electrodes as thin films and carbon material composites. However, the suitability of these compounds for application as electrode materials for rechargeable batteries has not yet been tested. In this study, redox processes in monocomponent electrodes based on a series of nickel salen‐type redox polymers are investigated in 1 m LiPF 6 in 1:1 ethylene carbonate (EC)/diethyl carbonate (DEC) electrolyte in a Li‐ion battery. The oxidation potentials for polymer complexes of nickel exceed 3.5 V versus Li/Li + , which enhances specific energy. It is found that introduction of a proper substituent in the phenyl ring of the ligand allows to fabricate additive‐free electrodes which demonstrate high charge/discharge rate performance with the capacity on discharge at 10 C being up to 73% of the capacity obtained at discharge at 1 C , which corresponds to maximum power of 2.6 kW kg −1 .