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2D-Supported Vertical MXenes for Ultrafast Filtering with Ultralow Inductance
Yanting Xie1,2,3, Shi Pu4, Zixing Wang5
1Institute of Smart City and Intelligent Transportation, Southwest Jiaotong University, Chengdu 610031, China.
Nano Letters
|May 1, 2025
Summary
This study introduces advanced MXene-based supercapacitors (SCs) with vertical structures, significantly improving low-frequency response for power filtering electronics. These novel SCs offer a compact, efficient alternative to traditional capacitors.
Area of Science:
- Materials Science
- Electrical Engineering
- Electrochemistry
Background:
- Supercapacitors (SCs) are vital for miniaturized power filter electronics due to high capacitance and power performance.
- Planar porous electrodes in SCs exhibit poor low-frequency response, limiting their application and causing overheating.
- Existing SCs struggle with dynamic response, hindering their use in linear filtering.
Purpose of the Study:
- To develop MXene-based SCs with enhanced dynamic response for linear filtering applications.
- To overcome the limitations of poor low-frequency response in conventional planar SCs.
- To demonstrate the potential of novel SCs in advanced electronic systems.
Main Methods:
- Utilized a vitamin C-assisted solution-thermal method for assembling Ti3C2Tx MXenes.
- Engineered 2D-supported vertical structures to improve SC dynamic response.
- Fabricated and tested MXene-based SCs for filtering performance.
Main Results:
- Achieved an ultrafast frequency response of 13.8 kHz at a phase angle of -45°.
- Demonstrated electric inductance 1/2000 that of commercial aluminum electrolytic capacitors (AECs).
- Exhibited high areal and volumetric capacitances, effectively smoothing AC to DC waveforms.
Conclusions:
- Developed novel MXene-based SCs with superior low-frequency performance and high capacitance.
- Showcased the practical application of these SCs by replacing bulky AECs in a Bluetooth audio amplifier.
- Highlighted the transformative potential of these advanced SCs for next-generation electronics.
