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Open AccessCommunication

Nickel Salicylaldoxime-Based Coordination Polymer as a Cathode for Lithium-Ion Batteries

1
Institute of Chemistry, St. Petersburg state University, 199034 St. Petersburg, Russia
2
Department of Physics and Engineering, ITMO University, 197101 St. Petersburg, Russia
*
Author to whom correspondence should be addressed.
Energies 2020, 13(10), 2480; https://doi.org/10.3390/en13102480
Received: 16 April 2020 / Revised: 7 May 2020 / Accepted: 9 May 2020 / Published: 14 May 2020
(This article belongs to the Special Issue Advanced Nanomaterials for Li- and Na-Ion Batteries)
Conjugated coordination polymers attract attention as materials for electrochemical energy storage, mostly as cathode materials for supercapacitors. Faradaic capacity may be introduced to such materials using redox-active building blocks, metals, or ligands. Using this strategy, a novel hybrid cathode material was developed based on a Ni2+ metal-organic polymer. The proposed material, in addition to double-layer capacitance, shows high pseudocapacitance, which arises from the contributions of both the metal center and ligand. A tailoring strategy in the ligand design allows us to minimize the molecular weight of the ligand, which increases its gravimetric energy. According to computational results, the ligand makes the prevailing contribution to the pseudocapacitance of the material. Different approaches to metal–organic polymer (MOP) synthesis were implemented, and the obtained materials were examined by FTIR, Raman spectroscopy, powder XRD, SEM/EDX (energy-dispersive X-ray spectroscopy), TEM, and thermal analysis. Energy-storage performance was comparatively studied with cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD). As a result, materials with an excellent discharge capacity were obtained, reaching the gravimetric energy density of common inorganic cathode materials. View Full-Text
Keywords: MOP; NiSalen; lithium-ion; supercapacitor; cathode material; nickel MOP; NiSalen; lithium-ion; supercapacitor; cathode material; nickel
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MDPI and ACS Style

Beletskii, E.V.; Lukyanov, D.A.; Vlasov, P.S.; Yankin, A.N.; Atangulov, A.B.; Sizov, V.V.; Levin, O.V. Nickel Salicylaldoxime-Based Coordination Polymer as a Cathode for Lithium-Ion Batteries. Energies 2020, 13, 2480.

AMA Style

Beletskii EV, Lukyanov DA, Vlasov PS, Yankin AN, Atangulov AB, Sizov VV, Levin OV. Nickel Salicylaldoxime-Based Coordination Polymer as a Cathode for Lithium-Ion Batteries. Energies. 2020; 13(10):2480.

Chicago/Turabian Style

Beletskii, Evgenii V.; Lukyanov, Daniil A.; Vlasov, Petr S.; Yankin, Andrei N.; Atangulov, Arslan B.; Sizov, Vladimir V.; Levin, Oleg V. 2020. "Nickel Salicylaldoxime-Based Coordination Polymer as a Cathode for Lithium-Ion Batteries" Energies 13, no. 10: 2480.

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