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Updated: Aug 5, 2026
10:03
Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
Amorphous/Crystalline@Amorphous Core-Shell Electrode Materials With Crystalline Electron-Transport Networks for
Chenyong Wang1, Yiheng Ma2, Suyuan Liu1
1State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Ocean and Life Sciences, Dalian University of Technology, Panjin, China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 28, 2026
Summary
A novel amorphous/crystalline@amorphous core-shell heterostructure (a/c-CoNiP@a-NiFe LDH/NF) enhances supercapacitor and electrocatalysis performance. This material combines high active sites, conductivity, and stability for energy storage and wastewater treatment.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Amorphous materials offer high active sites but poor conductivity.
- Crystalline materials provide good conductivity and stability but fewer active sites.
- Combining amorphous and crystalline phases can overcome individual limitations.
Purpose of the Study:
- To synthesize an amorphous/crystalline@amorphous core-shell heterostructure (a/c-CoNiP@a-NiFe LDH/NF).
- To optimize the phosphorization temperature for core crystallinity.
- To investigate the material's performance in supercapacitors and electrocatalysis.
Main Methods:
- Synthesis of a/c-CoNiP@a-NiFe LDH/NF heterostructure.
- Electrochemical characterization for supercapacitor performance.
- Electrocatalytic testing for urea oxidation and hydrogen evolution reactions.
- Density Functional Theory (DFT) calculations.
Main Results:
- Achieved ultrahigh specific capacitance (3071.64 F g⁻¹ at 5 mA cm⁻²) and energy density (56.41 Wh kg⁻¹).
- Demonstrated low overpotentials for urea oxidation (1.31 V) and hydrogen evolution (160 mV).
- DFT calculations confirmed enhanced interfacial charge transfer and OH⁻ adsorption.
Conclusions:
- The a/c-CoNiP@a-NiFe LDH/NF heterostructure effectively integrates amorphous and crystalline properties.
- The material shows excellent potential for flexible supercapacitors and urea-containing wastewater treatment.
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