In:
National Science Review, Oxford University Press (OUP), Vol. 10, No. 7 ( 2023-05-31)
Kurzfassung:
The relative natural abundance of potassium and potentially high energy density has established potassium-ion batteries as a promising technology for future large-scale global energy storage. However, the anodes’ low capacity and high discharge platform lead to low energy density, which impedes their rapid development. Herein, we present a possible co-activation mechanism between bismuth (Bi) and tin (Sn) that enhances K-ion storage in battery anodes. The co-activated Bi-Sn anode delivered a high capacity of 634 mAh g–1, with a discharge plateau as low as 0.35 V, and operated continuously for 500 cycles at a current density of 50 mA g–1, with a high Coulombic efficiency of 99.2%. This possible co-activation strategy for high potassium storage may be extended to other Na/Zn/Ca/Mg/Al ion battery technologies, thus providing insights into how to improve their energy storage ability.
Materialart:
Online-Ressource
ISSN:
2095-5138
,
2053-714X
Sprache:
Englisch
Verlag:
Oxford University Press (OUP)
Publikationsdatum:
2023
ZDB Id:
2745465-4