Issue 39, 2017, Issue in Progress

Amorphous FeF3/C nanocomposite cathode derived from metal–organic frameworks for sodium ion batteries

Abstract

Amorphous FeF3/C nanocomposites, where FeF3 nanoparticles are intimately anchored into a highly-graphitized porous branch-like carbon framework, have been successfully designed and fabricated from the carbonized Fe–MOFs by a novel vapor-solid fluoridation reaction and dehydration reaction. Compared to the FeF3/C nanocomposites obtained from the precursors at various carbonization conditions, the one carried out at 700 °C for 3 h exhibits the most outstanding comprehensive sodium ion storage performance. It can deliver 302, 146, 73 mA h g−1 discharge capacities at current densities of 15, 150, 1500 mA g−1, respectively, exhibiting an excellent sodium ion capacity and rate performance. Moreover, it displays a good cycling performance with a discharge capacity of 126.7 mA h g−1 at 75 mA g−1 after 100 cycles. The outstanding electrochemical features of the FeF3/C nanocomposites could be attributed to its amorphous structure and highly-graphited porous carbon framework, which is beneficial to the ionic and electronic transport and the reaction kinetics of electrode materials.

Graphical abstract: Amorphous FeF3/C nanocomposite cathode derived from metal–organic frameworks for sodium ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
28 Mar 2017
Accepted
18 Apr 2017
First published
03 May 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 24004-24010

Amorphous FeF3/C nanocomposite cathode derived from metal–organic frameworks for sodium ion batteries

L. Zhang, S. Ji, L. Yu, X. Xu and J. Liu, RSC Adv., 2017, 7, 24004 DOI: 10.1039/C7RA03592F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements