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Carbon-coated SnO2 riveted on a reduced graphene oxide composite (C@SnO2/RGO) as an anode material for lithium-ion batteries

Authors :
Fu Li
Shu-Shen Lyu
Yao Dai
Dong-Chuan Mo
Yuan-Xiang Fu
Source :
RSC Advances. 11:8521-8529
Publication Year :
2021
Publisher :
Royal Society of Chemistry (RSC), 2021.

Abstract

The research on graphene-based anode materials for high-performance lithium-ion batteries (LIBs) has been prevalent in recent years. In the present work, carbon-coated SnO2 riveted on a reduced graphene oxide sheet composite (C@SnO2/RGO) was fabricated using GO solution, SnCl4, and glucose via a hydrothermal method after heat treatment. When the composite was exploited as an anode material for LIBs, the electrodes were found to exhibit a stable reversible discharge capacity of 843 mA h g−1 at 100 mA g−1 after 100 cycles with 99.5% coulombic efficiency (CE), and a specific capacity of 485 mA h g−1 at 1000 mA g−1 after 200 cycles; these values were higher than those for a sample without glucose (SnO2/RGO) and a pure SnO2 sample. The favourable electrochemical performances of the C@SnO2/RGO electrodes may be attributed to the special double-carbon structure of the composite, which can effectively suppress the volume expansion of SnO2 nanoparticles and facilitate the transfer rates of Li+ and electrons during the charge/discharge process.

Details

ISSN :
20462069
Volume :
11
Database :
OpenAIRE
Journal :
RSC Advances
Accession number :
edsair.doi...........73c201f5d85e5390d6b1cb090cb772a4
Full Text :
https://doi.org/10.1039/d0ra10912f