Issue 3, 2016

SiO2–carbon nanocomposite anodes with a 3D interconnected network and porous structure from bamboo leaves

Abstract

To seek for a low-cost, green and sustainable method of preparing nanostructured carbon electrode materials, we are inspired by natural biomaterials. An amorphous SiO2–carbon nanocomposite (SiO2–C/NCs) with three-dimensional (3D) interconnected network and hierarchical porous structure is synthesized by thermal decomposition of abandoned bamboo leaves at 700 °C in N2 atmosphere. The characterization results indicate that the SiO2–C/NCs inherited the natural hierarchical structure of the bamboo leaves. Compared with the commercialized graphite anode and other artificial nanostructured carbon materials, the SiO2–C/NCs anode shows a high lithium-storage capacity of 586.2 mA h g−1 at 200 mA g−1, with impressive good cycle stability (294.7 mA h g−1 after 190 cycles) and ultra-high coulombic efficiency close to 100%. After 160 cycles at varied current densities from 200 mA g−1 to 2000 mA g−1, this anode still maintains a high discharge of 117.4 mA h g−1. This simple, green and sustainable strategy will open a new avenue for large-scale preparation and application of nanostructured electrode materials from biomass materials.

Graphical abstract: SiO2–carbon nanocomposite anodes with a 3D interconnected network and porous structure from bamboo leaves

Article information

Article type
Paper
Submitted
27 Sep 2015
Accepted
16 Dec 2015
First published
21 Dec 2015

RSC Adv., 2016,6, 1930-1937

SiO2–carbon nanocomposite anodes with a 3D interconnected network and porous structure from bamboo leaves

H. Xu, S. Zhang, W. He, X. Zhang, G. Yang, J. Zhang, X. Shi and L. Wang, RSC Adv., 2016, 6, 1930 DOI: 10.1039/C5RA19961A

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