123rd General Meeting of the KCS

Type Poster Presentation
Area Environmental Energy
Room No. Exhibition Hall 2
Time 4월 18일 (목요일) 11:00~12:30
Code ENVR.P-512
Subject Fe3O4 nanoparticles anchored on 3D porous carbon/MoS2 composites as anodes for lithium-ion batteries with superior cycling performance
Authors Youngmoo Jeon, Yuanzhe Piao*
Graduate School of Convergence Science and Technology, Seoul National University, Korea
Abstract Molybdenum disulfide (MoS2) has been recognized as a promising anode material for lithium-ion batteries due to its high theoretical capacity and cost-effectiveness. However, its low electric conductivity and high volume expansion lead to unsatisfied electrochemical performance. Herein, 3D porous carbon/MoS2 composites with uniform Fe3O4 nanoparticles (C-MF) were prepared through a facile mix–bake–wash method. The porous carbon matrix loaded with few-layered MoS2 improves electrical conductivity and promotes lithium ion diffusion, exhibiting a high specific capacity of 939.6 mA h g-1 on average at 0.1 A g-1 and a high rate capability (515.9 mA h g-1 at 5 A g-1). Furthermore, the Fe3O4 nanoparticles anchored on 3D porous carbon/MoS2 composites enhance the specific capacity and efficiently alleviate diffusion of lithium polysulfides during long-term cycling, showing outstanding cycling stability (590.1 mA h g-1 after 500 cycles at 2 A g-1). It is expected that 3D porous carbon/MoS2 composites anchored with other metal oxides can also be synthesized through this facile strategy for various other related applications.
E-mail jou3404@snu.ac.kr