Issue 16, 2019, Issue in Progress

Sn-encapsulated N-doped porous carbon fibers for enhancing lithium-ion battery performance

Abstract

Tin (Sn) has wide prospects in applications as an anode electrode material for Li-ion batteries, due to its high theoretical specific capacity. However, the large volume expansion of Sn during the charge–discharge process causes a performance reduction of lithium-ion batteries (LIBs). Here, Sn encapsulated N-doped porous carbon fibers (Sn/NPCFs) were synthesized through an electrospinning method with a pyrolysis process. This structure was beneficial for the lithium ion/electron diffusion and buffered the large volume change. By adjusting the amount of Sn, the hybrid carbon fibers with different Sn/carbon ratios could be prepared, and the morphology, composition and properties of the Sn/NPCFs were characterized systematically. The results indicated that the Sn/NPCFs with a Sn-precursor/polymer weight ratio at 0.5 : 1 showed the best cycling stability and specific capacity, preserving the specific capacity of 400 mA h g−1 at the current density of 500 mA g−1 even after 100 cycles.

Graphical abstract: Sn-encapsulated N-doped porous carbon fibers for enhancing lithium-ion battery performance

Supplementary files

Article information

Article type
Paper
Submitted
12 Dec 2018
Accepted
11 Mar 2019
First published
18 Mar 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 8753-8758

Sn-encapsulated N-doped porous carbon fibers for enhancing lithium-ion battery performance

Z. Xu, L. Fan, X. Ni, J. Han and R. Guo, RSC Adv., 2019, 9, 8753 DOI: 10.1039/C8RA10201E

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