Synthesis of MoS₂ and Graphene Composites as the Anode Materials for Li–Ion Batteries

Abstract

The MoS2 and N‐doped graphene (MoS2/NG) composites are fabricated by an ethylenediamine‐assisted hydrothermal method for the anode materials of lithium‐ion batteries. The effects of hydrothermal systems with different amount ethylenediamine on the morphology of the MoS2 in the prepared composites are investigated. The microstructure and morphology of the as‐obtained composites are characterized by SEM, TEM and XRD methods. The analytical result reveals that the ultrathin few‐layered MoS2 nanosheets are tightly anchored on the graphene in the MoS2/NG composites. Given the different nanostructures of the as‐obtained composites, the possible formation mechanism is discussed and the electrochemical properties are studied. The MoS2/NG composites prepared with optimized amount of ethylenediamine modifier exhibit improved electrochemical performances, i. e. the enhanced cycling stability with reversible capacity of 816.6 mA h g−1 at 200 mA g−1 after 120 cycles and remarkable high‐rate capacity of 683.8 mA h g−1 at 2000 mA g−1. Therefore, the MoS2/graphene composites have great potential being an electrode material for lithium‐ion batteries (LIBs).

Honeycomb‐Inspired Surface‐Patterned Cu@CuO Composite Current Collector for Lithium‐Ion Batteries

“…Lithium‐ion batteries (LIBs) have been widely used for portable electronic devices, due to its advantages of high energy density, no memory effects, and long‐term cycling stability . In commercial LIBs, graphite is commonly used as the anode active material because of its low and flat working potential, cost‐effectiveness, and long cycle life.…”

Preparation and Lithium Storage Properties of Hierarchical Hydrangea‐Like MoS2/C Composites

“…The other way of improving the electrochemical performance of MoS 2 is by introducing carbon material, which can improve the overall conductivity and alleviate the volume expansion effect. Wang [21] reported that the MoS 2 and N-doped graphene (MoS 2 / NG) composites fabricated via an ethylenediamine-assisted…”

“…The other way of improving the electrochemical performance of MoS 2 is by introducing carbon material, which can improve the overall conductivity and alleviate the volume expansion effect. Wang [ 21 ] reported that the MoS 2 and N‐doped graphene (MoS 2 /NG) composites fabricated via an ethylenediamine‐assisted hydrothermal method exhibits superior cycling performance by adjusting the concentration of ethylenediamine. Hierarchically porous MoS 2 /C composite aerogel studied by Zhang [ 22 ] exhibited a better rate capability with a specific capacity of 653.2 and 334.5 mAh g −1 at 0.1 and 5.0 A g −1 , respectively.…”

Flute‐like Fe2O3 Nanorods with Modulating Porosity for High Performance Anode Materials in Lithium Ion Batteries

“…Driven by the demand of new energy vehicles and stationary storage systems, high‐performance batteries have attracted increasing attention . Lithium ion batteries (LIBs) have become competitive candidate of most electric vehicle companies, including Tesla, Toyota, BYD, etc ., due to their high energy density, high working voltage, long lifespan and environmental geniality ,. However, current commercial graphite‐based anode materials (372 mAh g −1 ) are far from satisfying the actual demand for high energy density.…”