In:
RSC Advances, Royal Society of Chemistry (RSC), Vol. 13, No. 25 ( 2023), p. 17370-17383
Kurzfassung:
A series of new Co/N-doped porous carbon composites, denoted as Co/CZIF-9 and Co/CZIF-12, containing Co nanoparticles encapsulated in nitrogen-doped carbon matrices were prepared by annealing Co-based zeolite imidazolate framework materials, ZIF-9 and ZIF-12, as the efficient precursors at different temperatures. The structural features of the as-synthesized composites at 900 °C were determined by analytical methods with high reliability. Consequently, Co/CZIF-12_900 exhibits a high first specific discharge capacity of 971.0 mA h g −1 at a current density of 0.1 A g −1 . Notably, the specific discharge/charge capacity of Co/CZIF-12_900 reaches about 508.8 mA h g −1 at 0.1 A g −1 after 100 cycles. The outstanding behaviors can be accounted for by the efficient incorporation of hetero-nitrogen doping and the Co nanoparticles within the layered structure of porous carbon, enhancing electrical conductivity and structural stability and limiting volume change during the intercalation/deintercalation of Li + ions. These findings suggest that the Co/CZIF-12_900 material could be employed as a promising anode electrode for energy storage products.
Materialart:
Online-Ressource
ISSN:
2046-2069
Sprache:
Englisch
Verlag:
Royal Society of Chemistry (RSC)
Publikationsdatum:
2023
ZDB Id:
2623224-8
