Electrochimica Acta, Vol.319, 596-605, 2019
Facile synthesis of crumpled nitrogen-doped carbon/molybdenum disulfide hybrid sheets as high-rate anodes for lithium-ion batteries
To address the demand for high-rate anodes for lithium ion batteries, herein, crumpled MoS2/nitrogen-doped carbon hybrid sheets (CMNCS) were synthesized via a modified mix-bake-wash method. Material characterization proved that CMNCS comprised sheets with few-layer thickness that were composed of homogenously distributed MoS2 and N-doped carbon matrix with numerous mesopores. CMNCS offers the morphological advantage of 3D interconnected electron pathways and an enlarged ionic contact area for improving the rate performance. Furthermore, the N-doped carbon matrix in CMNCS plays a role in enhancing the electrical conductivity as well as suppressing volume changes during cycling. The CMNCS demonstrated a reversible discharge capacity of 264 mAh g(-1) at 10 A g(-1) and a stable cycle life with a discharge capacity of 324.2 mAh g(-1) and coulombic efficiency of 99.7%, even after the 1000th cycle at 4 Ag-1. These results indicate that CMNCS offers great potential as an anode material for lithium ion batteries that require high current and stable cycle life. (C) 2019 Elsevier Ltd. All rights reserved.