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Laser-architected MXene composite for photoenhanced microsupercapacitor.
Yongjiu Yuan1,2,3, Misheng Liang4, Tong Li1
1Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, P. R. China.
Science Advances
|September 24, 2025
Summary
Researchers developed laser-architected MXene-graphene composites for photoenhanced energy storage. These materials significantly boost supercapacitor performance under illumination, offering a new path for sustainable power.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Photoenhanced energy storage devices integrate solar harvesting with electrochemical storage.
- A key challenge is efficiently coupling light utilization with high-performance charge storage in one platform.
Purpose of the Study:
- To develop laser-architected MXene-graphene composites for integrated photoenhanced energy storage.
- To unify high-performance energy storage with photoenhancement in a single device.
Main Methods:
- Laser redox process to create reduced graphene oxide (rGO) and partially oxidized MXene composites.
- Fabrication of a hierarchical composite structure with enhanced conductivity and surface area.
Main Results:
- Achieved a 228% capacitance boost under illumination.
- Demonstrated record-breaking metrics: 2591.75 F/cm³ capacitance, 0.518 Wh/cm³ energy density, and 320.35 W/cm³ power density.
- The composite exhibits outstanding conductivity and surface area due to its hierarchical architecture.
Conclusions:
- The laser-architected MXene-graphene composites offer a promising route for integrated, photoenhanced energy systems.
- This advancement contributes to efficient and sustainable power technologies.
- The study highlights the potential of synergistic material design for next-generation energy storage.
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