Related Experiment Video
Updated: Jan 21, 2026
06:15
Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
12.7K
An advanced FeCoNi nitro-sulfide hierarchical structure from deep eutectic solvents for enhanced oxygen evolution
Jingyun Jiang1, Liangyu Chang1, Wancheng Zhao2
1School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, China. qunxu@zzu.edu.cn.
Chemical Communications (Cambridge, England)
|August 8, 2019
Summary
A novel iron-cobalt-nickel nitro-sulfide (FeCoNi-NS) hierarchical structure was synthesized for efficient oxygen evolution reactions (OER). This advanced material shows excellent catalytic activity and stability for energy applications.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Developing efficient electrocatalysts for the oxygen evolution reaction (OER) is crucial for renewable energy technologies.
- Heteroatom doping in metal sulfides can enhance catalytic activity and stability.
Purpose of the Study:
- To synthesize a novel tri-metal FeCoNi-based nitro-sulfide (FeCoNi-NS) hierarchical structure.
- To investigate the OER performance of the synthesized FeCoNi-NS material.
- To explore a facile synthesis strategy for multi-metal hierarchical structures.
Main Methods:
- Deep eutectic solvent annealing process for material synthesis.
- Characterization of the FeCoNi-NS hierarchical structure (including N,S-binary heteroatom doping).
- Electrochemical testing of OER performance in 1 M KOH.
Main Results:
- FeCoNi-NS exhibited excellent OER performance with a current density of 10 mA cm⁻² at an overpotential of 251 mV and a low Tafel slope of 58 mV dec⁻¹.
- The material demonstrated efficient mass/charge transportation and long-term stability (2% deactivation after 10 hours).
- High faradaic efficiency of 98% was achieved for the OER.
Conclusions:
- The synthesized FeCoNi-NS hierarchical structure is a highly effective electrocatalyst for OER.
- The deep eutectic solvent annealing method provides a facile route for fabricating advanced multi-metal hierarchical materials.
- This work offers a promising strategy for designing catalysts for energy conversion and storage applications.
Related Concept Videos
02:26Preparation and Reactions of Sulfides
5.7K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
5.7K
02:17Structure and Nomenclature of Thiols and Sulfides
5.7K
Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry,...
5.7K
01:12Solvents
70.1K
A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
A...
70.1K
02:55The Evidence for Evolution
47.7K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
47.7K
01:54Convergent Evolution
31.5K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
31.5K
02:34Structural Isomerism
21.5K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
21.5K