塔菲尔方程
材料科学
催化作用
溶剂
纳米技术
化学工程
活动站点
氢
有机化学
物理化学
电极
电化学
化学
工程类
作者
Ya Yan,Azhar Abbas Khosa,Xiaoming Ge,Zhaolin Liu,Jing‐Yuan Wang,Xin Wang
摘要
Well-defined ultrathin MoS2 nanoplates are developed by a facile solvent-dependent control route from single-source precursor for the first time. The obtained ultrathin nanoplate with a thickness of ∼5 nm features high density of basal edges and abundant unsaturated active S atoms. The multistage growth process is investigated and the formation mechanism is proposed. Ultrathin MoS2 nanoplates exhibit an excellent activity for hydrogen evolution reaction (HER) with a small onset potential of 0.09 V, a low Tafel slope of 53 mV dec–1, and remarkable stability. This work successfully demonstrates that the introduction of unsaturated active S atoms into ultrathin MoS2 nanoplates for enhanced electrocatalytic properties is feasible through a facial one-step solvent control method, and that this may open up a potential way for designing more efficient MoS2-based catalysts for HER.
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