Boosting the Hydrogen Evolution Reaction Performance of P-Doped PtTe2 Nanocages via Spontaneous Defects Formation

Ma, Hancheng1; Huang, Xiang2; Li, Luyu1; Peng, Wei1; Lin, Sheng1; Ding, Yao1; Mai, Liqiang1

2023-06-01

10.1002/smll.202302685

SMALL   影响因子和分区

1613-6810

1613-6829

PtTe2, a member of the noble metal dichalcogenides (NMDs), has aroused great interest in exploring its behavior in the hydrogen evolution reaction (HER) due to the unique type-II topological semimetallic nature. In this work, a simple template-free hydrothermal method to obtain the phosphorus-doped (P-doped) PtTe2 nanocages with abundant amorphous and crystalline interface (A/C-P-PtTe2) is developed. Revealed by density functional theory calculations, the atomic Te vacancies can spontaneously form on the basal planes of PtTe2 by the P doping, which results in the unsaturated Pt atoms exposed as the active sites in the amorphous layer for HER. Owing to the defective structure, the A/C-P-PtTe2 catalysts have the fast Tafel step determined kinetics in HER, which contributes to an ultralow overpotential (eta = 28 mV at 10 mA cm(-2)) and a small Tafel slope of 37 mV dec(-1). More importantly, benefiting from the inner stable crystalline P-PtTe2 nanosheets, limited decay of the performance is observed after chronopotentiometry test. This work reveals the important role of the inherent relationship between structure and activity in PtTe2 for HER, which may bring another enlightenment for the design of efficient catalysts based on NMDs in the near future.

amorphous structures hydrogen evolution reaction nanocages P doping PtTe2

SCI ; EI

英语

其他

National Natural Science Foundation of China["61905183","52127816","51832004"] ; National Key Research and Development Program of China[2020YFA0715000]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001004029600001

WILEY-V C H VERLAG GMBH

20232414246774

Defects ; Density functional theory ; Hydrogen ; Phosphorus ; Precious metals ; Tellurium compounds

Precious Metals:547.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4 ; Materials Science:951

Web of Science

1.Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

Ma, Hancheng,Huang, Xiang,Li, Luyu,et al. Boosting the Hydrogen Evolution Reaction Performance of P-Doped PtTe2 Nanocages via Spontaneous Defects Formation[J]. SMALL,2023,19(41).

Ma, Hancheng.,Huang, Xiang.,Li, Luyu.,Peng, Wei.,Lin, Sheng.,...&Mai, Liqiang.(2023).Boosting the Hydrogen Evolution Reaction Performance of P-Doped PtTe2 Nanocages via Spontaneous Defects Formation.SMALL,19(41).

Ma, Hancheng,et al."Boosting the Hydrogen Evolution Reaction Performance of P-Doped PtTe2 Nanocages via Spontaneous Defects Formation".SMALL 19.41(2023).