Synergistic effect of S vacancies and P dopants in MoS2/Mo2C to promote electrocatalytic hydrogen evolution

被引：6
作者：
Zhao, Yaru [1 ]
Xin, Wang [1 ,2 ]
Liu, Bitao [1 ,2 ]
Li, Hongxing [1 ]
Xu, Yuqing [1 ,2 ]
Zhang, Zixuan [1 ]
机构：
[1] Baoji Univ Arts & Sci, Coll Phys & Optoelect Technol, Baoji 721016, Peoples R China
[2] Chongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R China
来源：
INORGANIC CHEMISTRY FRONTIERS | 2022年 / 9卷 / 14期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
MOLYBDENUM-DISULFIDE; MOS2; NANOSHEETS; ACTIVE-SITES; EFFICIENT; SULFIDE; DEFECT;
D O I：
10.1039/d2qi00829g
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Herein, a new strategy is proposed for constructing hierarchical heterojunctions of P-MoS2/Mo2C. Owing to the exposed coordination-unsaturated Mo atoms of S vacancies, P-MoS2/Mo2C offered active sites for water adsorption and activation, which accelerated the water dissociation steps. Additionally, P-doping can stabilize the S vacancies. This ensured that the as-prepared P-MoS2/Mo2C exhibited high stability and excellent HER activity with an ultra-low overpotential of 66 mV at a current density of 10 mA cm(-2) and a Tafel slope of 67 mV dec(-1) in 1 M KOH.
引用
收藏
页码：3461 / 3469
页数：9
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