作者：Y. F. Zhang, L. Z. Zuo, Y. P. Huang, L. S. Zhang, F. L. Lai, W. Fan*, T. X. Liu*
关键字：Molybdenum disulfide, Carbon aerogels, Hydrogen evolution reaction
论文来源：期刊
具体来源：ACS Sustain. Chem. Eng., 2015, 3(12), 3140-3148.
发表时间：2015年
Molybdenum disulfide-based hybrids, acting as cost-effective and acid-stable electrocatalysts for hydrogen evolution reaction (HER), have been developed fast for providing sustainable hydrogen energy in recent years. Herein, few-layered molybdenum disulfide (MoS₂) nanosheets/carbon aerogel (CA) hybrids were successfully obtained through the combination of sol?gel process, aging, freeze-drying, high temperature carbonization, and solvothermal reaction. CA with highly continuous porosity and high specific surface area is used as a matrix material for construction of hierarchical MoS₂/CA hybrids where few-layered MoS₂ nanosheets are uniformly covered on a CA surface. In this heterostructured system, CAs not only provide three-dimensional (3D) conductive pathway for fast transportation of electrons and ions, but also offer highly active regions for the growth of MoS₂, greatly preventing the aggregation of MoS₂ nanosheets. Due to the rationally designed hybrids with 3D porous nanostructures, the as-prepared MoS₂/CA hybrids with optimized MoS₂ content exhibit enhanced catalytic performance for electrocatalytic HER with a low onset potential of ?0.14 V, large current density, and excellent stability.