Details

Autor(en) / Beteiligte

• Shinde, Pratik V
• Mane, Pratap
• Late, Dattatray J
• Chakraborty, Brahmananda
• Rout, Chandra Sekhar

Titel

Promising 2D/2D MoTe2/Ti3C2T x Hybrid Materials for Boosted Hydrogen Evolution Reaction

Ist Teil von

• ACS applied energy materials, 2021-10, Vol.4 (10), p.11886-11897

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Hydrogen as an energy source has been regarded as a clean and efficient energy carrier and as a promising alternative to traditional fossil fuels. Among numerous hydrogen generation systems, water splitting is deemed as the most productive technology to generate clean and high-purity hydrogen. The prominent features-based two-dimensional (2D) materials have proven themselves as efficient as well as robust electrocatalysts for the hydrogen evolution reaction (HER). Here we designed a remarkably active and durable HER catalyst by integrating semimetallic 1T′ MoTe2 petal clusters on Ti3C2T x nanosheets by a facile hydrothermal approach. As-prepared MoTe2/Ti3C2T x hybrids exhibited significantly enhanced electrocatalytic HER performance, generating a cathode current density of 10 mA/cm2 at an overpotential of only 293 mV with a small Tafel slope of 65 mV/dec and satisfactory long-term stability in acidic media. The experimental results are further verified by the first-principles studies presenting the geometrical and electronic properties of MoTe2, Ti3C2T x , and MoTe2/Ti3C2T x hybrids. The interaction between the Ti3C2T x and MoTe2 is due to charge transfer from Ti3C2T x to MoTe2. Theoretically, we have calculated the overpotential for HER activities. Computed overpotential follows the qualitative trend of MoTe2/Ti3C2T x < MoTe2 < Ti3C2T x , which supports the experimental findings. The unique aspects of these unique hybrids, such as semimetallic nature MoTe2 petal clusters and strong interface interaction between MoTe2 and conductive Ti3C2T x nanosheets, cause superior HER catalytic performance. We believe these outcomes accentuate the promising perspective of MoTe2/Ti3C2T x hybrids as a capable and nonprecious catalyst and provide an auspicious prospect for the development of 2D materials-based HER electrocatalysts.