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Synergistic Doping and Intercalation: Realizing Deep Phase Modulation on MoS2 Arrays for High-Efficiency Hydrogen Evolution Reaction

Journal Article · · Angewandte Chemie (International Edition)
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  1. Zhejiang Univ., Hangzhou (China)
  2. Chinese Academy of Sciences (CAS), Shanghai (China)
  3. South China Sea Hainan Univ., Haikou (China)
  4. Chinese Academy of Sciences (CAS), Beijing (China)
  5. Argonne National Lab. (ANL), Argonne, IL (United States)
  6. Univ. of Jinan, Jinan (China)
  7. Huzhou Univ. (China)
A synergistic N doping plus PO43- intercalation strategy is used to induce high conversion (ca. 41%) of 2H-MoS2 into 1T-MoS, 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 kindies, the designed (N, PO43-)-MoS2 nanosheds are combined with conductive vertical graphene (VG) skeleton forming binder-free arrays fir high efficiencyhydrogen evolution reaction (HER). Owing 10 the decreased band gap, lower d-band censer, and smaller hydrogen adsorption/desorption energy, the designed (NPO43-)-MoSJVG electrode shows excellent HER perfor mance with a lower Tafel slope and overpotential than N-MoS2/VG, PO43--MoS2/VG counterparts, and other Mo-base catalysts in the literature.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1756165
Alternate ID(s):
OSTI ID: 22861020
Journal Information:
Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 45 Vol. 58; ISSN 1433-7851
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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