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Updated: Jun 21, 2025

Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material
Published on: February 5, 2019
SnO2/Sn with core-shell structure Schottky heterojunctions loaded in graphene to promote electrochemical reaction
Shujuan Yin1, Xueqian Zhang1, Dongdong Liu2
1School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, China. zhangxueqian@sdut.edu.cn.
Abstract:
The stannic oxide (SnO2) anode expands in volume during cycling causing a decrease in reversible capacity. In this work, we generated a spherical SnO2/Sn heterojunction with core-shell structure composites encapsulated by graphene (SnO2/Sn/G) in situ using a simple one-step hydrothermal and subsequent annealing process. SnO2/Sn heterojunction nanospheres dispersed in a porous graphene framework accelerate the diffusion kinetics of electrons and ions. In addition, the structure plays a key role in mitigating large volume changes and nanostructure agglomeration. As a result, SnO2/Sn/G exhibits excellent performance as an anode material for lithium-ion batteries (LIBs), maintaining a reversible specific capacity of 720.6 mA h g-1 even after 600 cycles at a current density of 0.5 A g-1.
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