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Related Concept Videos

Spherical and Cylindrical Capacitor01:26

Spherical and Cylindrical Capacitor

A spherical capacitor consists of two concentric conducting spherical shells of radii R1 (inner shell) and R2 (outer shell). The shells have equal and opposite charges of +Q and −Q, respectively. For an isolated conducting spherical capacitor, the radius of the outer shell can be considered to be infinite.
Conventionally, considering the symmetry, the electric field between the concentric shells of a spherical capacitor is directed radially outward. The magnitude of the field, calculated by...
Energy Stored in a Capacitor01:12

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Capacitor With A Dielectric01:18

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
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Related Experiment Video

Updated: Jul 9, 2026

Elaborate Control of Inkjet Printer for Fabrication of Chip-based Supercapacitors
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3D-Printed Flexible and Integrable Asymmetric Microsupercapacitors with High-Areal-Energy-Density.

Lihui Chen1, Pinjing Yao1, Wangyang Li1,2

  • 1College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou 350108, China.

ACS Applied Materials & Interfaces
|March 12, 2025
PubMed
Summary

3D-printed microsupercapacitors (MSCs) with latticed electrodes achieve ultrahigh energy density. This advancement in 3D printed energy storage offers superior performance for miniature devices.

Keywords:
3D printingasymmetric supercapacitorgrapheneminiature energy storagequasi-solid-state

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • 3D-printed quasi-solid-state microsupercapacitors (MSCs) offer high power density, flexibility, and on-chip integration potential.
  • Challenges include formulating high-performance 3D printing inks and ensuring efficient ion transport in thick electrodes for high areal energy density.

Purpose of the Study:

  • To report 3D-printed ultrahigh-energy-density asymmetric MSCs with novel latticed electrodes.
  • To overcome limitations in ink formulation and ionic transport for advanced MSCs.

Main Methods:

  • Fabrication of asymmetric MSCs using Ni-Co-S/Co(OH)2/carbon nanotubes/reduced graphene oxide (Ni-Co-S/Co(OH)2/CNTs/rGO) for positive electrodes and activated carbon (AC)/CNTs for negative electrodes.
  • Utilizing latticed electrode design with hierarchical pores and an interconnected conductive network (CNTs and rGO/AC) for efficient ion and electron transport.

Main Results:

  • The 3D-printed asymmetric MSCs with three-layer latticed electrodes achieved an areal energy density of 543 μWh cm⁻² and areal capacitance of 1.74 F cm⁻² at 1 mA cm⁻².
  • Performance was nearly double that of planar electrodes.
  • Demonstrated excellent cycling stability with 80% capacitance retention after 5000 cycles.

Conclusions:

  • This work demonstrates a significant advancement in 3D printing for energy storage applications.
  • The developed latticed electrode design provides principles for creating high-performance, integrated flexible MSCs.