We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Metal‐Organic Framework‐Derived Fe‐Doped Co<sub>1.11</sub>Te<sub>2</sub> Embedded in Nitrogen‐Doped Carbon Nanotube for Water Splitting.
- Authors
He, Bin; Wang, Xin‐Chao; Xia, Li‐Xue; Guo, Yue‐Qi; Tang, Ya‐Wen; Zhao, Yan; Hao, Qing‐Li; Yu, Tao; Liu, Hong‐Ke; Su, Zhi
- Abstract
A rational design is reported of Fe‐doped cobalt telluride nanoparticles encapsulated in nitrogen‐doped carbon nanotube frameworks (Fe‐Co1.11Te2@NCNTF) by tellurization of Fe‐etched ZIF‐67 under a mixed H2/Ar atmosphere. Fe‐doping was able to effectively modulate the electronic structure of Co1.11Te2, increase the reaction activity, and further improve the electrochemical performance. The optimized electrocatalyst exhibited superior hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) performances in an alkaline electrolyte with low overpotentials of 107 and 297 mV with a current density of 10 mA cm−2, in contrast to the undoped Co1.11Te2@NCNTF (165 and 360 mV, respectively). The overall water splitting performance only required a voltage of 1.61 V to drive a current density of 10 mA cm−2. Density function theory (DFT) calculations indicated that the Fe‐doping not only afforded abundant exposed active sites but also decreased the hydrogen binding free energy. This work provided a feasible way to study non‐precious‐metal catalysts for an efficient overall water splitting.
- Subjects
HYDROGEN evolution reactions; OXYGEN evolution reactions; COBALT; BINDING energy; ELECTRONIC structure; WATER
- Publication
ChemSusChem, 2020, Vol 13, Issue 19, p5239
- ISSN
1864-5631
- Publication type
Article
- DOI
10.1002/cssc.202001434