4.6 Article

Cr-doped NiZn layered double hydroxides with surface reconstruction toward the enhanced water splitting

Publisher

ELSEVIER
DOI: 10.1016/j.colsurfa.2022.129324

Keywords

Electrocatalyst; Electrodeposition; NiZn-layered double hydroxides; Oxygen evolution reaction; Oxygen vacancies

Funding

  1. National Natural Science Foundation of China [21902123]
  2. Natural Science Basic Research Program of Department of Science and Technology of Shaanxi Province [2020JQ-806]
  3. Research Fund for the Doctoral Program of Xi?an Technological University [0853-302020540]
  4. Fundamental Research Fund for the Undergraduate Innovation Project [S202110702085]

Ask authors/readers for more resources

The search for efficient self-supported nanoelectrodes for water-splitting process is important. A high-performance trimetallic Cr-NiZn layered double hydroxides electrocatalyst was synthesized, and doping was found to promote the reconstruction process and increase the number of defects.
The search for highly efficient earth-abundant self-supported nanoelectrodes for the water-splitting process is an urgent and important task. Various methods have been employed to enhance the activity and long-term stability of the electrodes. The phenomenon of surface species reconstruction has been reported many times in the actual operation of catalysts. Herein, an efficient integrated trimetallic Cr-NiZn layered double hydroxides (LDH) electrocatalyst was systematically synthesized by one-step electrodeposition. The time- and concentrationoptimized Cr-NiZn LDH catalyst for oxygen evolution reaction can achieve a current density of 50 mA cm-2 at a low overpotential of 292 mV in a 1.0 M KOH electrolyte. The high-performance was attributed to the reconstruction of surface-active substances and the formation of oxygen defects. The research shows that doping can promote the reconstruction process and increase the number of defects to a greater extent. This feasible modulation strategy can be also be applied in other energy catalysis fields.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available