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Updated: May 10, 2025
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Determining the Mechanical Strength of Ultra-Fine-Grained Metals
Published on: November 22, 2021
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Structural Engineering of Core-Shell Ni3B@Ni(BO2)2 on V2MoO8 (0D@2D/1D) Composites: Advanced Strategies for Enhancing
Ahamed Milton1, Abdullah Al Mahmud1, Ramaraj Sukanya2
1School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, The Republic of Korea.
Langmuir : the ACS Journal of Surfaces and Colloids
|April 21, 2025
Summary
This study developed a novel Ni3B@Ni(BO2)2/V2MoO8 composite electrode for enhanced supercapacitor (SC) performance. The material demonstrated superior capacitance and long-term stability for advanced energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Hierarchical core-shell structures and multicomponent composites are key for improving supercapacitor (SC) performance.
- Metal borides and metal oxides offer unique electrochemical properties for energy storage.
Purpose of the Study:
- To synthesize and characterize a novel Ni3B@Ni(BO2)2/V2MoO8 (NB@NBO/VMO) core-shell/1D composite for SC applications.
- To evaluate the electrochemical performance and stability of the developed composite electrode material.
Main Methods:
- Hydrothermal synthesis and calcination to derive 1D V2MoO8 rods from V-doped MoSe2 nanosheets.
- Liquid-phase method to create the NB@NBO/VMO composite on a carbon cloth substrate.
- Comprehensive material characterization using XRD, XPS, FE-SEM, and TEM-EDS.
Main Results:
- The NB@NBO/VMO-50 composite electrode exhibited a high specific capacitance (Cs) of 698 F g-1 at 1 A g-1.
- The electrode demonstrated excellent cyclic stability, retaining 75.1% capacitance after 10,000 cycles at 10 A g-1.
- An asymmetric SC device using NB@NBO/VMO-50 achieved an energy density of 40.5 Wh kg-1 at 800 W kg-1 and maintained 79.3% capacitance after 8000 cycles.
Conclusions:
- The hierarchical NB@NBO/VMO (0D@2D/1D) composite structure significantly enhances supercapacitor performance due to improved charge transport and active site availability.
- The developed electrode material shows great promise for next-generation flexible energy storage devices.
- The composite electrode offers a viable pathway for designing high-performance supercapacitors with excellent durability.
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