Issue 47, 2016

A composite with SiOx nanoparticles confined in carbon framework as an anode material for lithium ion battery

Abstract

A composite with ultrafine SiOx (x = 1.57, around 2 nm) nanoparticles confined in a carbon framework is synthesized by a simple thermopolymerization process and subsequent heat treatment. In the composite, the carbon framework can provide a consecutive network to improve the electrical conductivity of the composite and cushion the volume expansion to prevent the active material peeling from the current collector. The ultrafine SiOx nanoparticles can alleviate mechanical strain and shorten the diffusion/transport distance of lithium ions and electrons. In consequence, the as-synthesized composite delivers a high reversible capacity of 540 mA h gāˆ’1 at a current density of 500 mA gāˆ’1 after 200 cycles. The composite delivers good electrochemical performance, making it a promising candidate for the next-generation high-energy LIBs.

Graphical abstract: A composite with SiOx nanoparticles confined in carbon framework as an anode material for lithium ion battery

Supplementary files

Article information

Article type
Paper
Submitted
24 Feb 2016
Accepted
18 Apr 2016
First published
19 Apr 2016

RSC Adv., 2016,6, 40799-40805

A composite with SiOx nanoparticles confined in carbon framework as an anode material for lithium ion battery

Z. Sun, X. Wang, T. Cai, Z. Meng and W. Han, RSC Adv., 2016, 6, 40799 DOI: 10.1039/C6RA04885D

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