Optimizing graphene content in scaffolds for evenly distributed crumpled MoS<sub>2</sub> paper wads as anodes for high-performance Li-ion batteries
Abgeena Shabir, Firoz Khan, Abbas Ali Hor, S.A. Hashmi, C. Julien, S. S. Islam
Abstract
Abstract Lithium-ion batteries (LIBs) have revolutionized portable electronics, yet their conventional graphite anodes face capacity limitations. Integrating graphene and 3D molybdenum disulfide (MoS 2 ) offers a promising solution. Ensuring a uniform distribution of 3D MoS 2 nanostructures within a graphene matrix is crucial for optimizing battery performance and preventing issues like agglomeration and capacity degradation. This study focuses on synthesizing a uniformly distributed paper wad structure by optimizing a composite of reduced graphene oxide RGO@MoS 2 through structural and morphological analyses. Three composites with varying graphene content were synthesized, revealing that the optimized sample containing 30 mg RGO demonstrates beneficial synergy between MoS 2 and RGO. The interconnected RGO network enhances reactivity and conductivity, addressing MoS 2 aggregation. Experimental results exhibit an initially superior capacity of 911 mAh g −1 , retained at 851 mAh g −1 even after 100 cycles at 0.1 A g −1 current density, showcasing improved rate efficiency and long-term stability. This research underscores the pivotal role of graphene content in customizing RGO@MoS 2 composites for enhanced LIB performance.