Phase Modulation and Chemical Activation of MoSe2 by Phosphorus for Electrocatalytic Hydrogen Evolution Reaction

Chen, Lunfeng1; Zhu, Yuanmin2; Li, Jun1; Feng, Hanghang1; Li, Tingya1; Zhang, Xueyan1; Wang, Suhang1; Gu, Meng2; Zhang, Peixin1; Zhao, Chenyang1

2020-03-13

10.1002/ente.201901503

Energy Technology   影响因子和分区

2194-4288

2194-4296

Molybdenum diselenide (MoSe2), as a member of transitional metal chalcogenides (TMDs), is regarded as a promising electrocatalyst for hydrogen evolution reaction (HER). However, its intrinsic performance is still hampered by insufficient exposure of active sites and inferior electric conductivity. The phase-engineered synthesis of stable metallic 1T-MoSe2 with abundant active sites is thus highly desirable for further boosting HER performance. Herein, a phosphorus (P)-doped MoSe2 with controlled 2H/1T heterophases is synthesized through a facile way. Combining calculations and experiments, it is demonstrated that the doping of P (approximate to 0.83 wt%) not only induces a phase change from 2H to 1T, but activates the Se atoms in the basal plane, thereby significantly enhancing its intrinsic HER performance. An overpotential of 174 mV is achieved at the benchmark of 10 mA cm(-2) with a Tafel slope of 51 mV dec(-1). More importantly, after the long-term run at 180 mV for 10 h, the P-1T/2H-MoSe2 still displays a high current density of 10.43 mA cm(-2) and keeps its original 2H/1T heterostructures, showing superior electrochemical stability and structural robustness. This work provides a facile method for improving the intrinsic HER activity of MoSe2 through nonmetal doping, which helps to understand the activity origin of MoSe2.

density functional theory hydrogen evolution reaction molybdenum diselenide phosphorus doping 1T phase

SCI ; EI

英语

其他

Foundation for Distinguished Young Talents in Higher Education of Guangdong[2016KQNCX147]

Energy & Fuels

Energy & Fuels

WOS:000519287600001

WILEY-V C H VERLAG GMBH

20201208317499

Electrocatalysts ; Selenium compounds ; Electrocatalysis ; Molybdenum compounds ; Inorganic compounds ; Phosphorus ; Chemical activation

Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

Web of Science

1.Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518071, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Chen, Lunfeng,Zhu, Yuanmin,Li, Jun,et al. Phase Modulation and Chemical Activation of MoSe2 by Phosphorus for Electrocatalytic Hydrogen Evolution Reaction[J]. Energy Technology,2020,8(5).

Chen, Lunfeng.,Zhu, Yuanmin.,Li, Jun.,Feng, Hanghang.,Li, Tingya.,...&Zhao, Chenyang.(2020).Phase Modulation and Chemical Activation of MoSe2 by Phosphorus for Electrocatalytic Hydrogen Evolution Reaction.Energy Technology,8(5).

Chen, Lunfeng,et al."Phase Modulation and Chemical Activation of MoSe2 by Phosphorus for Electrocatalytic Hydrogen Evolution Reaction".Energy Technology 8.5(2020).