Contributions of Phase, Sulfur Vacancies, and Edges to the Hydrogen Evolution Reaction Catalytic Activity of Porous Molybdenum Disulfide Nanosheets

Molybdenum disulfide (MoS2) is a promising nonprecious catalyst for the hydrogen evolution reaction (HER) that has been extensively studied due to its excellent performance, but the lack of understanding of the factors that impact its catalytic activity hinders further design and enhancement of MoS2-based electrocatalysts. Here, by using novel porous (holey) metallic 1T phase MoS2 nanosheets synthesized by a liquid-ammonia-assisted lithiation route, we systematically investigated the contributions of crystal structure (phase), edges, and sulfur vacancies (S-vacancies) to the catalytic activity toward HER from five representative MoS2 nanosheet samples, including 2H and 1T phase, porous 2H and 1T phase, and…

• NN
  National Natural Science Foundation of China

  Awards: 51172055, 21471039, 51472064, 51372056
• MO
  Ministry of Education of the People's Republic of China

  Awards: HIT.ICRST.2010008, HIT.NSRIF.2012045, HIT A201502, HIT.BRETIII.201220
• MO
  Ministry of Science and Technology of the People's Republic of China

  Awards: 2014CB46505, 2012DFR50020
• SF
  Science Fund for Creative Research Groups

  Award: 10821201
• PF
  Program for New Century Excellent Talents in University

  Award: NCET-13-0174
• BE
  Basic Energy Sciences

  Award: DE-FG02-09ER46664