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Electrodeposition

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...

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Related Experiment Video

Updated: Aug 27, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

2D RhTe Monolayer: A highly efficient electrocatalyst for oxygen reduction reaction.

Lusi Zhao¹, Guangtao Yu², Mingyue Lv²

¹Engineering Research Center of Industrial Biocatalysis, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian-Taiwan Science and Technology Cooperation Base of Biomedical Materials and Tissue Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China; Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China.

Journal of Colloid and Interface Science

|September 24, 2022

Summary

Researchers discovered a new 2D RhTe material that shows excellent activity and selectivity for the oxygen reduction reaction (ORR). This material could be a promising alternative to platinum-based catalysts for fuel cells.

Keywords:

2D RhTe monolayer DFT calculations Electrocatalyst Oxygen reduction reaction (ORR)Substitution doping

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Published on: April 27, 2018

Area of Science:

Materials Science
Electrochemistry
Catalysis

Background:

The oxygen reduction reaction (ORR) is crucial for fuel cell technology.
Developing efficient and selective ORR electrocatalysts is essential for widespread fuel cell application.
Current precious metal catalysts like platinum are expensive and have limitations.

Purpose of the Study:

To identify promising 2D RhTe configurations for ORR catalysis.
To investigate the catalytic activity and selectivity of r-RhTe monolayer for ORR.
To explore methods for enhancing the ORR performance of RhTe-based materials.

Main Methods:

First-principles calculations were used to evaluate three 2D RhTe configurations (r-RhTe, o-RhTe, h-RhTe).
The electronic structure and surface properties of the most stable r-RhTe were analyzed.
The effect of transition metal doping (Cr, Mn, Fe) on ORR activity was investigated.

Main Results:

The r-RhTe monolayer was identified as the most energetically stable configuration.
Positively charged Te atoms on the r-RhTe surface facilitate oxygen dissociation.
Doping with Cr, Mn, and Fe significantly enhanced the ORR catalytic activity of r-RhTe, achieving low over-potentials.
The performance of doped r-RhTe was comparable to or better than Pt(111).

Conclusions:

The 2D r-RhTe monolayer exhibits excellent intrinsic ORR activity, stability, and conductivity.
Transition metal doping can effectively boost the ORR performance of r-RhTe.
Rh-Te based materials are promising candidates for next-generation ORR electrocatalysts, potentially replacing precious metals.