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Updated: May 21, 2025
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Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
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Ti-MXene/α-Ni(OH)2 Nanostructures as High-Performance Electrocatalyst for Oxygen Evolution Reaction.
Mrunal Bhosale1, Sadhasivam Thangarasu1, Nagaraj Murugan2
1School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Korea.
Chemsuschem
|March 18, 2025
Summary
This study developed a new electrocatalyst using nickel hydroxide nanoparticles on 2D MXene nanosheets for efficient oxygen evolution reactions. This advanced material shows improved water-splitting properties and stability.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- The oxygen evolution reaction (OER) is crucial for water splitting but often requires efficient electrocatalysts.
- 2D MXenes offer unique properties for catalysis, but their OER performance needs enhancement.
- Integrating nanomaterials with MXenes can create synergistic effects for improved catalytic activity.
Purpose of the Study:
- To develop a novel electrocatalyst by homogeneously incorporating nickel hydroxide (Ni(OH)2) nanoparticles onto 2D Ti3C2Tx MXene.
- To investigate the synergistic effects between Ni(OH)2 and Ti3C2Tx for enhanced oxygen evolution reaction (OER) performance.
- To evaluate the electrochemical activity and stability of the synthesized Ti3C2Tx-Ni(OH)2 electrocatalyst in alkaline conditions.
Main Methods:
- Uniform anchoring of nano-sized Ni(OH)2 particles onto multilayered Ti3C2Tx nanosheets.
- Characterization of the Ti3C2Tx-Ni(OH)2 composite material.
- Electrochemical testing to assess OER performance, including overpotential and electrochemical active surface area.
- Evaluation of charge transfer resistance and catalytic stability during long-term operation.
Main Results:
- The Ti3C2Tx-Ni(OH)2-4 composite demonstrated remarkable OER activity with a low overpotential of 235.54 mV at 10 mA cm-2.
- Achieved a significantly increased electrochemical active surface area (2.925 mF cm-2) and reduced charge transfer resistance.
- The composite exhibited enhanced stability during long-term OER operations due to strong interactions between Ti3C2Tx and Ni(OH)2.
- A Ti3C2Tx-Ni(OH)2-4||Pt/C cell achieved 1.7 V at 10 mA cm-2, indicating noteworthy water-splitting properties.
Conclusions:
- Homogeneous integration of Ni(OH)2 nanoparticles onto 2D Ti3C2Tx MXene is an effective strategy for boosting OER performance.
- The synergistic effects between Ti3C2Tx and Ni(OH)2 significantly improve electron transfer, catalytic activity, and stability.
- The developed Ti3C2Tx-Ni(OH)2 electrocatalyst shows great potential for efficient water-splitting applications.
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