In:
Small, Wiley, Vol. 19, No. 4 ( 2023-01)
Kurzfassung:
Potassium‐ and sodium‐ion batteries (PIBs and SIBs) have great potential as the next‐generation energy application owing to the natural abundance of K and Na. Antimony (Sb) is a suitable alloying‐type anode for PIBs and SIBs due to its high theoretical capacity and proper operation voltage; yet, the severe volume variation remains a challenge. Herein, a preparation of N‐doped carbon‐wrapped Sb nanoparticles (L‐Sb/NC) using pulsed laser ablation and polydopamine coating techniques, is reported. As the anode for PIB and SIB, the L‐Sb/NC delivers superior rate capabilities and excellent cycle stabilities (442.2 and 390.5 mA h g −1 after 250 cycles with the capacity decay of 0.037% and 0.038% per cycle) at the current densities of 0.5 and 1.0 A g −1 , respectively. Operando X‐ray diffraction reveals the facilitated and stable potassiation and sodiation mechanisms of L‐Sb/NC enabled by its optimal core–shell structure. Furthermore, the SIB full cell fabricated with L‐Sb/NC and Na 3 V 2 (PO 4 ) 2 F 3 shows outstanding electrochemical performances, demonstrating its practical energy storage application.
Materialart:
Online-Ressource
ISSN:
1613-6810
,
1613-6829
DOI:
10.1002/smll.202205681
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2023
ZDB Id:
2168935-0