Conducting MoS2 Nanosheets as Catalysts for Hydrogen Evolution Reaction
Citations Over TimeTop 1% of 2013 papers
Abstract
We report chemically exfoliated MoS2 nanosheets with a very high concentration of metallic 1T phase using a solvent free intercalation method. After removing the excess of negative charges from the surface of the nanosheets, highly conducting 1T phase MoS2 nanosheets exhibit excellent catalytic activity toward the evolution of hydrogen with a notably low Tafel slope of 40 mV/dec. By partially oxidizing MoS2, we found that the activity of 2H MoS2 is significantly reduced after oxidation, consistent with edge oxidation. On the other hand, 1T MoS2 remains unaffected after oxidation, suggesting that edges of the nanosheets are not the main active sites. The importance of electrical conductivity of the two phases on the hydrogen evolution reaction activity has been further confirmed by using carbon nanotubes to increase the conductivity of 2H MoS2.
Related Papers
- → Tafel slopes and corrosion rates obtained in the pre-Tafel region of polarization curves(2005)231 cited
- → Evaluation of corrosion rate from polarisation curves not exhibiting a Tafel region(2005)167 cited
- → Electrochemical contributions: Julius Tafel (1862–1918)(2022)10 cited
- The characteristics of a true Tafel slope(2005)
- → Dynamic tafel factor adaption for the evaluation of instantaneous corrosion rates on zinc by using gel-type electrolytes(2017)15 cited