A non-topotactic redox reaction enabled K2V3O8 as a high voltage cathode material for potassium-ion batteries

A non-topotactic redox reaction enabled K2V3O8 as a high voltage cathode material for potassium-ion batteries

When tested as the cathode material for potassium-ion batteries, K2V3O8 delivers a highly reversible capacity of over 100 mA h g−1 in the voltage range of 1.5–4.5 V with 73% capacity retained after 50 cycles. Charge–discharge is achieved by a nontopotactic process between K2V3O8 and KV3O8 (ΔV ∼ −23....

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Chemical communications (Cambridge, England) England), 2019, Vol.55 (99), p.14988-14991
Hauptverfasser: Yang, Yusi, Liu, Zhifeng, Deng, Leqing, Tan, Lulu, Niu, Xiaogang, Sanad, Mustafa M S, Zeng, Liang, Zhu, Zhiping, Zhu, Yujie
Format: Artikel
Sprache:eng
Schlagworte:
Cathodes
Decay rate
Electrode materials
Plasma
Potassium
Rechargeable batteries
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:When tested as the cathode material for potassium-ion batteries, K2V3O8 delivers a highly reversible capacity of over 100 mA h g−1 in the voltage range of 1.5–4.5 V with 73% capacity retained after 50 cycles. Charge–discharge is achieved by a nontopotactic process between K2V3O8 and KV3O8 (ΔV ∼ −23.4%), causing the slow capacity decay.
ISSN:1359-7345
1364-548X
DOI:10.1039/c9cc07996c