In:
Nature Communications, Springer Science and Business Media LLC, Vol. 13, No. 1 ( 2022-04-22)
Abstract:
Defect engineering is an effective strategy to improve the activity of two-dimensional molybdenum disulfide base planes toward electrocatalytic hydrogen evolution reaction. Here, we report a Frenkel-defected monolayer MoS 2 catalyst, in which a fraction of Mo atoms in MoS 2 spontaneously leave their places in the lattice, creating vacancies and becoming interstitials by lodging in nearby locations. Unique charge distributions are introduced in the MoS 2 surface planes, and those interstitial Mo atoms are more conducive to H adsorption, thus greatly promoting the HER activity of monolayer MoS 2 base planes. At the current density of 10 mA cm −2 , the optimal Frenkel-defected monolayer MoS 2 exhibits a lower overpotential (164 mV) than either pristine monolayer MoS 2 surface plane (358 mV) or Pt-single-atom doped MoS 2 (211 mV). This work provides insights into the structure-property relationship of point-defected MoS 2 and highlights the advantages of Frenkel defects in tuning the catalytic performance of MoS 2 materials.
Type of Medium:
Online Resource
ISSN:
2041-1723
DOI:
10.1038/s41467-022-29929-7
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2022
detail.hit.zdb_id:
2553671-0
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