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Rare Metals
Published in: Rare Metals 5/2022

19-09-2014

Improvement of cycle behavior of Si/Sn anode composite supported by stable Si–O–C skeleton

Authors: Jian-Tao Wang, Shi-Gang Lu, Yao Wang, Bin Huang, Juan-Yu Yang, Ao Tan

Published in: Rare Metals | Issue 5/2022

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Abstract

A Si/Sn/SiOC/graphite (SSSG) composite with high efficiency and long-term cycling stability was synthesized by a cost-effective and scalable method, including the processes of mechanical milling and pyrolysis. The composite was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive X-ray spectrometry (EDX). The electrochemical properties were investigated until the 25th cycle. As a result, the SSSG composite anode exhibits excellent long-term cycling stability and capacity. Such SSSG composite anode shows excellent cycling stability with a specific capacity of 568.2 mAh·g−1 and ∼80 % capacity retention over 25 cycles at 0.3C rate. The reasons for good electrochemical characteristics are considered that the SiOC net with favorable chemical stability acts as a skeleton to support and segregate Si/Sn nanostructures, and the graphitic mixing in the composite is used as conductive material to enhance the electrical conductivity in this composite. The results suggest that the design of this new structure has the potential to provide a way for the other functional composite materials.
previous article Delicate synthesis of quasi-inverse opal structural Na3V2(PO4)3/N-C and Na4MnV(PO4)3/N-C as cathode for high-rate sodium-ion batteries
next article A highly efficient humidity sensor based on lead (II) coordination polymer via in-situ decarboxylation and hydrolysis synthesis

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Metadata
Title
Improvement of cycle behavior of Si/Sn anode composite supported by stable Si–O–C skeleton
Authors
Jian-Tao Wang
Shi-Gang Lu
Yao Wang
Bin Huang
Juan-Yu Yang
Ao Tan
Publication date
19-09-2014
Publisher
Nonferrous Metals Society of China
Published in
Rare Metals / Issue 5/2022
Print ISSN: 1001-0521
Electronic ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-014-0377-1

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