Liu Jinlong, Wang Zhenyu, Li Jun, Cao Lujie, Lu Zhouguang, Zhu Dongdong
Department of Engineering, University of Cambridge, Cambridge, CB3 0FA, UK.
Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.
Small. 2020 Jan;16(4):e1905738. doi: 10.1002/smll.201905738. Epub 2020 Jan 1.
Oxygen and phosphorus dual-doped MoS nanosheets (O,P-MoS ) with porous structure and continuous conductive network are fabricated using a one-pot NaH PO -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-MoS exhibit superior electrocatalytic performances compared with those of oxygen single-doped MoS nanosheets (O-MoS ). Specifically, a low HER onset overpotential of 150 mV with a small Tafel slope of 53 mV dec , excellent conductivity, and long-term durability are achieved by the structural engineering of MoS 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.
采用一锅法NaH₂PO₂辅助水热法制备了具有多孔结构和连续导电网络的氧磷双掺杂MoS纳米片（O，P-MoS）。通过简单改变前驱体溶液，可以有效控制化学成分和所得结构，以获得对析氢反应（HER）所需的性能。得益于其有益的结构以及掺入的氧和磷之间的强协同效应，与氧单掺杂MoS纳米片（O-MoS）相比，最佳的O，P-MoS表现出优异的电催化性能。具体而言，通过O和P共掺杂对MoS进行结构工程，实现了150 mV的低HER起始过电位、53 mV dec⁻¹的小塔菲尔斜率、优异的导电性和长期耐久性，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，可将过渡金属二硫属化物作为先进材料用于电催化及相关能源应用。
