Controllable Synthesis of MoS <sub>2</sub> /Carbon Nanotube Hybrids with Enlarged Interlayer Spacings for Efficient Electrocatalytic Hydrogen Evolution
Wenwen Xu, Xiaoli Dong, Yu Wang, Nan Zheng, Zheng Bingrong, Qing Lin, Yilin Zhao
Abstract
Abstract Hydrogen, as a clean, affordable and reliable energy, is one of the important roles in clean energy conversion. In order to meet the demand of current energy, the hydrogen evolution reaction (HER) has attracted considerable attention as an effective process to produce hydrogen from water. Herein, we report a simple solvothermal synthesis of molybdenum disulfide (MoS 2 )/carbon nanotube (CNT) hybrids with enlarged interlayer distances ranging from 8.9 to 9.7 Å through controlling the CNTs loadings. The synergistic effects between CNTs and the layered MoS 2 result in the high electrocatalytic activity for HER. MoS 2 /CNT‐2 catalyst with the enlarged lattice spacing of 9.7 Å shows the enhanced overpotential with 210 mV to reach the current density of 10 mA cm −2 , 56 mV dec −1 Tafel slope, and good stability over 1000 cycles. This work provides a facile way to the fabrication of efficient MoS 2 ‐based catalysts via modulating the interlayer spacing of MoS 2 nanosheets.