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Structure Engineering of MoS2 via Simultaneous Oxygen and Phosphorus Incorporation for Improved Hydrogen Evolution.
Small ( IF 13.0 ) Pub Date : 2020-01-01 , DOI: 10.1002/smll.201905738 Jinlong Liu 1, 2 , Zhenyu Wang 2 , Jun Li 2 , Lujie Cao 2 , Zhouguang Lu 2 , Dongdong Zhu 3
Small ( IF 13.0 ) Pub Date : 2020-01-01 , DOI: 10.1002/smll.201905738 Jinlong Liu 1, 2 , Zhenyu Wang 2 , Jun Li 2 , Lujie Cao 2 , Zhouguang Lu 2 , Dongdong Zhu 3
Affiliation
Oxygen and phosphorus dual-doped MoS2 nanosheets (O,P-MoS2 ) with porous structure and continuous conductive network are fabricated using a one-pot NaH2 PO2 -assisted hydrothermal approach. By simply changing the precursor solution, the chemical composition and resulting structure can be effectively controlled to obtain desired properties toward the hydrogen evolution reaction (HER). Thanks to the beneficial structure and strong synergistic effects between the incorporated oxygen and phosphorus, the optimal O,P-MoS2 exhibit superior electrocatalytic performances compared with those of oxygen single-doped MoS2 nanosheets (O-MoS2 ). Specifically, a low HER onset overpotential of 150 mV with a small Tafel slope of 53 mV dec-1 , excellent conductivity, and long-term durability are achieved by the structural engineering of MoS2 via O and P co-doping, making it an efficient HER electrocatalyst for water electrocatalysis. This work provides an alternative strategy to manipulate transition metal dichalcogenides as advanced materials for electrocatalytic and related energy applications.
中文翻译:
通过同时进行氧和磷的掺入来改善MoS2析氢的MoS2结构工程。
利用一锅式NaH2 PO2辅助水热法制备了具有多孔结构和连续导电网络的氧和磷双掺杂MoS2纳米片(O,P-MoS2)。通过简单地改变前体溶液,可以有效地控制化学组成和所得结构以获得针对氢析出反应(HER)的期望性质。由于掺入的氧和磷之间的有益结构和强大的协同效应,与单氧掺杂的MoS2纳米片(O-MoS2)相比,最佳的O,P-MoS2表现出优异的电催化性能。具体而言,通过O和P共掺杂MoS2的结构工程,可实现150 mV的低HER起始过电势和53 mV dec-1的小Tafel斜率,优异的电导率和长期耐久性,使其成为用于水电催化的高效HER电催化剂。这项工作提供了一种替代策略,可将过渡金属二卤化物用作电催化和相关能源应用的高级材料。
更新日期:2020-01-29
中文翻译:
通过同时进行氧和磷的掺入来改善MoS2析氢的MoS2结构工程。
利用一锅式NaH2 PO2辅助水热法制备了具有多孔结构和连续导电网络的氧和磷双掺杂MoS2纳米片(O,P-MoS2)。通过简单地改变前体溶液,可以有效地控制化学组成和所得结构以获得针对氢析出反应(HER)的期望性质。由于掺入的氧和磷之间的有益结构和强大的协同效应,与单氧掺杂的MoS2纳米片(O-MoS2)相比,最佳的O,P-MoS2表现出优异的电催化性能。具体而言,通过O和P共掺杂MoS2的结构工程,可实现150 mV的低HER起始过电势和53 mV dec-1的小Tafel斜率,优异的电导率和长期耐久性,使其成为用于水电催化的高效HER电催化剂。这项工作提供了一种替代策略,可将过渡金属二卤化物用作电催化和相关能源应用的高级材料。