https://scholars.lib.ntu.edu.tw/handle/123456789/606572
標題: | Unveiling the Mechanisms Ruling the Efficient Hydrogen Evolution Reaction with Mitrofanovite Pt3Te4 | 作者: | Boukhvalov D.W. et al. LI-MIN WANG |
關鍵字: | Density functional theory; Electrocatalysts; Electrodes; Hydrogen; Ambient stability; Catalytic performance; Electrical conductivity; Electrocatalytic; Electrocatalytic activity; Long term stability; Physico-chemical mechanisms; Surface science techniques; Hydrogen evolution reaction | 公開日期: | 2021 | 起(迄)頁: | 8627-8636 | 來源出版物: | Journal of Physical Chemistry Letters | 摘要: | By means of electrocatalytic tests, surface-science techniques and density functional theory, we unveil the physicochemical mechanisms ruling the electrocatalytic activity of recently discovered mitrofanovite (Pt3Te4) mineral. Mitrofanovite represents a very promising electrocatalyst candidate for energy-related applications, with a reduction of costs by 47% compared to pure Pt and superior robustness to CO poisoning. We show that Pt3Te4 is a weak topological metal with the Z2 invariant, exhibiting electrical conductivity (?4 × 106 S/m) comparable with pure Pt. In hydrogen evolution reaction (HER), the electrode based on bulk Pt3Te4 shows a very small overpotential of 46 mV at 10 mA cm-2 and a Tafel slope of 36-49 mV dec-1 associated with the Volmer-Heyrovsky mechanism. The outstanding ambient stability of Pt3Te4 also provides durability of the electrode and long-term stability of its efficient catalytic performances. ? 2021 American Chemical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85115169066&doi=10.1021%2facs.jpclett.1c01261&partnerID=40&md5=c037dad1d95ddc03905ebd1a3a934b45 https://scholars.lib.ntu.edu.tw/handle/123456789/606572 |
ISSN: | 19487185 | DOI: | 10.1021/acs.jpclett.1c01261 |
顯示於: | 物理學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。