Synergistic Doping and Intercalation: Realizing Deep Phase Modulation on MoS2 Arrays for High‐Efficiency Hydrogen Evolution Reaction
Year: 2019
Type: review
Abstract: A synergistic N doping plus PO43− intercalation strategy is used to induce high conversion (ca. 41 %) of 2H‐MoS2 into 1T‐MoS2, which is much higher than single N doping (ca. 28 %) or single PO43− intercalation (ca. 10 %). A scattering mechanism is proposed to illustrate the synergistic phase transformation from the 2H to the 1T phase, which was confirmed by synchrotron radiation and spherical aberration TEM. To further enhance reaction kinetics, the designed (N,PO43−)‐MoS2 nanosheets are combined with conductive vertical graphene (VG) skeleton forming binder‐free arrays for high‐efficiency hydrogen evolution reaction (HER). Owing to the decreased band gap, lower d‐band center, and smaller hydrogen adsorption/desorption energy, the designed (N,PO43−)‐MoS2/VG electrode shows excellent HER performance with a lower Tafel slope and overpotential than N‐MoS2/VG, PO43−‐MoS2/VG counterparts, and other Mo‐base catalysts in the literature.
Institutions: State Key Laboratory of Silicon Materials, Zhejiang University, Chinese Academy of Sciences, Shanghai Institute of Applied Physics, Shanghai Synchrotron Radiation Facility, Hainan University, State Key Laboratory of Marine Resource Utilization in South China Sea, Institute of Physics, Argonne National Laboratory, Center for Nanoscale Materials, University of Jinan, Huzhou Normal University
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2975540334