journal article·2019-06-25

Immobilized Single Molecular Molybdenum Disulfide on Carbonized Polyacrylonitrile for Hydrogen Evolution Reaction

Tamene Simachew Zeleke, Meng-Che Tsai, Misganaw Adigo Weret, Chen-Jui Huang, Mulatu Kassie Birhanu, Tzu-Ching Liu, Chiu-Ping Huang, Yun-Liang Soo, Yaw-Wen Yang, Wei-Nien Su, Bing-Joe Hwang

ACS Nano· Volume 13· Issue 6
Publisher page

Abstract

Designing a MoS2 catalyst having a large number of active sites and high site activity enables the catalytic activity toward the hydrogen evolution reaction to be improved. Herein, we report the synthesis of a low-cost and catalytically active immobilized single molecular molybdenum disulfide on carbonized polyacrylonitrile (MoS2-cPAN) electrocatalyst. From the extended X-ray absorption fine structure spectra analysis, we found that the as-prepared material has no metal–metal scattering and it resembles MoS2 with a molecular state. Meanwhile, the size of the molecular MoS2 has been estimated to be about 1.31 nm by high-angle annular dark-field scanning transmission electron microscopy. A low coordination number and maximum utilization of the single molecular MoS2 surface enable MoS2-cPAN to demonstrate electrochemical performance significantly better than that of bulk MoS2 by two orders of exchange current density (jo) and turnover frequency to the hydrogen evolution.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Fuel Cells and Related Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsin-Chu 31040, Taiwan

Department of Physics, National Tsing Hua University, Hsin-Chu 300, Taiwan

National Synchrotron Radiation Research Center, Hsin-Chu 30076, Taiwan

NanoElectrochemistry Laboratory, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

Applied Research Center for Thin-Film Metallic Glass, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

Funding

Ministry of Education · Academia Sinica · Ministry of Science and Technology, Taiwan

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