In:
CrystEngComm, Royal Society of Chemistry (RSC), Vol. 24, No. 40 ( 2022), p. 7049-7057
Abstract:
In this study, porous CoFe 2 O 4 /carbon composite nanofibers with metal–organic framework (MOF) structures were prepared by electrospinning and in situ growth followed by annealing. CoFe 2 O 4 particles derived from Prussian blue analogues (PBAs) were firmly anchored onto highly conductive carbon nanofibers by tuning the growth time, generating the sturdy construction and prominent conductivity of CFO@C-24 with a large specific surface area, stable fibrous morphology and MOF structure integrity. Owing to these structural merits, more active sites are provided with accelerated electron/Li-ion transport when the nanofiber is applied as an anode in lithium-ion batteries. A high initial discharge/charge capacity of 1400/1328 mA h g −1 at 0.1 A g −1 , a considerable reversible discharge/charge capacity of 623/598 mA h g −1 after 400 cycles at 1 A g −1 and an excellent rate performance of 585 mA h g −1 at 1.5 A g −1 are presented. Specific capacities of 1166, 1059, 861, 742 and 585 mA h g −1 of CFO@C-24 are achieved at multiple current densities of 0.1, 0.2, 0.5, 1 and 1.5 A g −1 , respectively, and the discharge specific capacity is able to resume to 1035 mA h g −1 when returned to 0.1 A g −1 . Upon assembling into full cells, considerable capacitance and rate performance are delivered and a series of LED bulbs can be lit to demonstrate its potential in real applications.
Type of Medium:
Online Resource
ISSN:
1466-8033
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2025075-7
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