Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11006873 | Materials Chemistry and Physics | 2018 | 24 Pages |
Abstract
Two-dimensional (2D) structures have received substantial attention in the energy applications. However, a common problem with 2D layered structures is restacking during the charge-discharge process. In this work, a graphene-like structure, molybdenum disulfide (S-MoS2), was synthesized using the hydrothermal method. Moreover, zero-dimensional (0D) α-Fe2O3 nanoparticles were constructed to act as a spacer in the slurry. Subsequently, the three-dimensional (3D) S-MoS2@Fe2O3 nanoparticles were fabricated by the ultrasonic vibration process to improve their electrochemical properties. On the basis of the 3D architecture, the α-Fe2O3 nanoparticles not only prevent the restacking of MoS2 sheets, but also increase accessibility for electrolyte penetration to provide more active sites and lower the diffusion energy barrier for Li+ ions during the charge-discharge process. In the potential window of 3â¯V-0.01â¯V, high-rate charge-discharge and long cycle tests were performed to investigate the electrochemical performance of all electrodes. The electrochemical performance was enhanced through spatial distribution of MoS2. In summary, these S-MoS2@Fe2O3 nanoparticles possess high potential for application as anode materials in next-generation lithium-ion batteries.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Cheng-Yu Wu, Wei-En Chang, Yu-Guang Sun, Jyh-Ming Wu, Jenq-Gong Duh,