Architectural design and optimization of internal structures in 3D printed electrodes for superior supercapacitor...

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Electrode architecture is critical for charge transfer in electrochemical reactions.
• Optimized electrode materials and structures significantly boost device performance.
• 3D printing offers novel fabrication routes for advanced energy storage devices.

Purpose of the Study:

• To leverage 3D printing for fabricating asymmetric supercapacitor devices with regular layered configurations.
• To investigate the influence of material choice on the internal architecture of 3D-printed electrodes.
• To enhance asymmetric charge transfer and overall electrochemical performance.

Main Methods:

• Utilized 3D printing technology to fabricate asymmetric supercapacitor devices.
• Investigated various materials to understand their impact on electrode architecture.
• Established a stratified electrode structure with orderly arrangement.
• Analyzed electrochemical performance, including areal capacitance, energy density, and power density.

Main Results:

• Successfully fabricated asymmetric supercapacitors with regular layered electrode structures using 3D printing.
• Demonstrated that 3D printing mitigates electrode material agglomeration.
• Achieved exceptional areal capacitance (205.57 mF cm⁻²) and energy density (60.03 μWh cm⁻²) in 3D-printed VCG//MXene devices.
• Reported a power density of 0.174 W cm⁻².

Conclusions:

• 3D printing is a viable technique for constructing advanced electrode architectures for supercapacitors.
• The developed stratified electrode structure significantly improves asymmetric charge transfer.
• This approach provides valuable insights for enhancing miniature asymmetric micro-supercapacitors (MSCs).