@article{f5c307cb908d4efb858615bc5a17066f,
title = "Unraveling the Role of Lithium in Enhancing the Hydrogen Evolution Activity of MoS2: Intercalation versus Adsorption",
abstract = "Molybdenum disulfide (MoS2) is a highly promising catalyst for the hydrogen evolution reaction (HER) to realize large-scale artificial photosynthesis. The metallic 1T′-MoS2 phase, which is stabilized via the adsorption or intercalation of small molecules or cations such as Li, shows exceptionally high HER activity, comparable to that of noble metals, but the effect of cation adsorption on HER performance has not yet been resolved. Here we investigate in detail the effect of Li adsorption and intercalation on the proton reduction properties of MoS2. By combining spectroscopy methods (infrared of adsorbed NO, 7Li solid-state nuclear magnetic resonance, and X-ray photoemission and absorption) with catalytic activity measurements and theoretical modeling, we infer that the enhanced HER performance of LixMoS2 is predominantly due to the catalytic promotion of edge sites by Li.",
author = "Longfei Wu and Dzade, {Nelson Y.} and Miao Yu and Brahim Mezari and {Van Hoof}, {Arno J.F.} and Heiner Friedrich and {De Leeuw}, {Nora H.} and Hensen, {Emiel J.M.} and Hofmann, {Jan P.}",
note = "Funding Information: This work is part of the program “CO 2 -neutral fuels” (project 13-CO26) of the Foundation for Fundamental Research on Matter (FOM, now NWO-I), which is financially supported by The Netherlands Organization for Scientific Research (NWO). This research program was cofinanced by Shell Global Solutions International B.V. We thank Dr. Alessandro Longo (BM26 (DUBBLE), European Synchrotron Radiation Facility (ESRF)) and Marco Etzi Coller Pascuzzi (Eindhoven University of Technology, TU/e) for their support during the beam time. Adelheid Elemans-Mehring (TU/e) is acknowledged for performing ICP-OES measurements. Dr. Lu Gao (TU/e) is thanked for fruitful discussions. Dr. Freddy Oropeza Palacio (TU/e) is acknowledged for assistance in Raman measurements. DFT calculations were performed using the computational facilities of the Advanced Research Computing @ Cardiff (ARCCA) Division, Cardiff University, and the U.K. Engineering and Physical Sciences Research Council is acknowledged for funding (grant number EP/K009567). Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",
year = "2019",
month = jun,
day = "27",
doi = "10.1021/acsenergylett.9b00945",
language = "English (US)",
volume = "4",
pages = "1733--1740",
journal = "ACS Energy Letters",
issn = "2380-8195",
publisher = "American Chemical Society",
number = "7",
}