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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Nanostructured molybdenum Phosphide/N-Doped carbon nanotube-graphene composites as efficient electrocatalysts for hydrogen evolution reaction

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Title
Nanostructured molybdenum Phosphide/N-Doped carbon nanotube-graphene composites as efficient electrocatalysts for hydrogen evolution reaction
Author
Lee, Min HeeYoun, Duck HyunLee, Jae Sung
Issue Date
2020-03
Publisher
ELSEVIER
Citation
APPLIED CATALYSIS A-GENERAL, v.594, pp.117451
Abstract
Uniformly dispersed similar to 10 nm MoP nanoparticles on N-doped carbon nanotube and graphene composite (NCNTNGR) support are synthesized via a simple temperature-programmed reduction method for electrocatalytic hydrogen evolution reaction (HER). The NCNT-NGR support is composed of well-intercalated carbon nanotube (CNT) between graphene layers, resulting in suppressed CNT bundling and graphene re-stacking, hence providing a large surface area. The prepared MoP/NCNT-NGR composite exhibits high HER activity than control catalysts (MoP/NCNT, MoP/NGR, and bare MoP) with a small benchmark overpotential of 100 mV to drive 10 mA/cm(2) and an improved Tafel slope of 44 mV/dec in an acidic medium. It also exhibits excellent stability for 1000 potential cycles and in a 10-h chronoamperometry test. Such a HER performance arises from synergy between highly active MoP nanoparticles and the large surface area/highly conducive NCNT-NGR support.
URI
https://scholarworks.unist.ac.kr/handle/201301/32020
URL
https://www.sciencedirect.com/science/article/pii/S0926860X20300442?via%3Dihub
DOI
10.1016/j.apcata.2020.117451
ISSN
0926-860X
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