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Park, Noejung
Computational Physics & Electronic Structure Lab
Research Interests
  • Electronic structure calculation, computational physics, computational material science

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Macroporous Inverse Opal-like MoXC with Incorporated Mo Vacancies for Significantly Enhanced Hydrogen Evolution

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Title
Macroporous Inverse Opal-like MoXC with Incorporated Mo Vacancies for Significantly Enhanced Hydrogen Evolution
Author
Li, FengZhao, XianglongMahmood, JawedOkyay, Mahmut SaltJung, Sun-MinAhmad, IshfaqKim, Seok-JinHan, Gao-FengPark, NoejungBaek, Jong-Beom
Keywords
binding energy; hydrogen evolution; inverse opal; Mo vacancies; molybdenum carbide
Issue Date
201707
Publisher
AMER CHEMICAL SOC
Citation
ACS NANO, v.11, no.7, pp.7527 - 7533
Abstract
The hydrogen evolution reaction (HER) is one of the most important pathways for producing pure and clean hydrogen. Although platinum (Pt) is the most efficient HER electrocatalyst, its practical application is significantly hindered by high cost and scarcity. In this work, an MoxS with incorporated Mo vacancies and macroporous inverse opal-like (IOL) structure (MoxC-IOL) was synthesized and studied as a low-cost efficient HER electrocatalyst. The macroporous IOL structure was controllably fabricated using a facile-hard template strategy. As a result of the combined benefits of the Mo vacancies and structural advantages, including appropriate hydrogen binding energy, large exposed surface, robust IOL structure and fast mass/charge transport, the synthesized MoxC-IOL exhibited significantly enhanced HER electrocatalytic performance with good stability, with performance comparable or superior to Pt wire in both acidic and alkaline solutions.
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DOI
http://dx.doi.org/10.1021/acsnano.7b04205
ISSN
1936-0851
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