Reversible lithium storage behaviour of aromatic diimide dilithium carboxylates

Reversible lithium storage behaviour of aromatic diimide dilithium carboxylates

Electrochemical lithiation/delithiation studies are carried out on three different aromatic diimide lithium carboxylates. Among all, naphthalene diimide based dilithium carboxylate delivers a remarkably stable capacity of 134mAhg⿿1 at 2.24V vs. Li/Li+ over 125 cycles with a low polarization of 50mV....

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Electrochimica acta 2016-03, Vol.193, p.80-87
Hauptverfasser: Veerababu, M, Varadaraju, U.V, Kothandaraman, R
Format: Artikel
Sprache:eng
Schlagworte:
aromatic diimide dilithium carboxylate
biphasic behavior in charge/discharge
Carboxylates
DFT
Diimide
Electron affinity
Lithium
Lithium storage
Mathematical analysis
Naphthalene
Polarization
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Electrochemical lithiation/delithiation studies are carried out on three different aromatic diimide lithium carboxylates. Among all, naphthalene diimide based dilithium carboxylate delivers a remarkably stable capacity of 134mAhg⿿1 at 2.24V vs. Li/Li+ over 125 cycles with a low polarization of 50mV. A striking feature is that, the lithiation/delithiation process is biphasic with excellent plateau behaviour in the voltage-composition profile. DFT calculations confirm the lower band gap and higher electron affinity for this compound.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2016.02.030