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Title: Effect of Intercalated Metals on the Electrocatalytic Activity of 1T-MoS 2 for the Hydrogen Evolution Reaction

Journal Article · · ACS Energy Letters
ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [2];  [3];  [4];  [2];  [4];  [5]; ORCiD logo [2]
  1. Temple Univ., Philadelphia, PA (United States). Dept. of Chemistry, and Center for Computational Design of Functional Layered Materials (CCDM)
  2. Temple Univ., Philadelphia, PA (United States). Dept. of Chemistry, Center for Computational Design of Functional Layered Materials (CCDM)
  3. Temple Univ., Philadelphia, PA (United States). Dept. of Chemistry
  4. Temple Univ., Philadelphia, PA (United States). Dept. of Chemistry, Center for Computational Design of Functional Layered Materials (CCDM), and Inst. for Computational Molecular Science
  5. Temple Univ., Philadelphia, PA (United States). Dept. of Physics, Center for Computational Design of Functional Layered Materials (CCDM)

We show that intercalation of cations (Na+, Ca2+, Ni2+, and Co2+) into the interlayer region of 1T-MoS2 is an effective strategy to lower the overpotential for the hydrogen evolution reaction (HER). In acidic media the onset potential for 1T-MoS2 with intercalated ions is lowered by ~60 mV relative to that for pristine 1T-MoS2 (onset of ~180 mV). Density functional theory (DFT) calculations show a lowering in the Gibbs free energy for H-adsorption (ΔGH) on these intercalated structures relative to intercalant-free 1T-MoS2. The DFT calculations suggest that Na+ intercalation results in a $$ΔG_H$$ close to zero. Consistent with calculation, experiments show that the intercalation of Na+ ions into the interlayer region of 1T-MoS2 results in the lowest overpotential for the HER.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for the Computational Design of Functional Layered Materials (CCDM)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012575
OSTI ID:
1470020
Journal Information:
ACS Energy Letters, Vol. 3, Issue 1; Related Information: CCDM partners with Temple University (lead); Brookhaven National Laboratory; Drexel University; Duke University; North Carolina State University; Northeastern University; Princeton University; Rice University; University of Pennsylvania; ISSN 2380-8195
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 166 works
Citation information provided by
Web of Science

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Tuning the surface charge density of exfoliated thin molybdenum disulfide sheets via non-covalent functionalization for promoting hydrogen evolution reaction journal January 2020
Intercalating MnO 2 Nanosheets With Transition Metal Cations to Enhance Oxygen Evolution journal February 2019
Doping‐Assisted Phase Changing Effect on MoS 2 Towards Hydrogen Evolution Reaction in Acidic and Alkaline pH journal December 2019
Vertically aligned MoS 2 on Ti 3 C 2 (MXene) as an improved HER catalyst journal January 2018
The Stability of Metallic MoS2 Nanosheets and Their Property Change by Annealing journal September 2019
Benchmarking the Activity, Stability, and Inherent Electrochemistry of Amorphous Molybdenum Sulfide for Hydrogen Production journal January 2019
C@TiO 2 /MoO 3 Composite Nanofibers with 1T‐Phase MoS 2 Nanograin Dopant and Stabilized Interfaces as Anodes for Li‐ and Na‐Ion Batteries journal November 2018
Unravelling the synergy effects of defect-rich 1T-MoS 2 /carbon nanotubes for the hydrogen evolution reaction by experimental and calculational studies journal January 2019
Agent-assisted VSSe ternary alloy single crystals as an efficient stable electrocatalyst for the hydrogen evolution reaction journal January 2019
Engineering 2D Metal–Organic Framework/MoS 2 Interface for Enhanced Alkaline Hydrogen Evolution journal February 2019
A new metal–organic open framework enabling facile synthesis of carbon encapsulated transition metal phosphide/sulfide nanoparticle electrocatalysts journal January 2019
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Structural‐Phase Catalytic Redox Reactions in Energy and Environmental Applications journal January 2020
Synthesis, stabilization and applications of 2-dimensional 1T metallic MoS 2 journal January 2018
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Facile microwave assisted synthesis of vastly edge exposed 1T/2H-MoS 2 with enhanced activity for hydrogen evolution catalysis journal January 2019
Heterolayered 2D nanohybrids of uniformly stacked transition metal dichalcogenide–transition metal oxide monolayers with improved energy-related functionalities journal January 2018
Unraveling the Role of Lithium in Enhancing the Hydrogen Evolution Activity of MoS2: Intercalation versus Adsorption journal June 2019