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Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Published on: June 18, 2013

Vertically Aligned Niobium Nanowire Arrays for Fast-Charging Micro-Supercapacitors.

Seyed M Mirvakili¹, Ian W Hunter¹

¹BioInstrumentation Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.

Advanced Materials (Deerfield Beach, Fla.)

|May 12, 2017

Summary

This summary is machine-generated.

Novel niobium nanowire electrodes offer high performance for planar micro-supercapacitors. These vertically aligned nanomaterials achieve excellent capacitance and power density, ideal for advanced electronic devices.

Keywords:

energy storage micro-supercapacitors niobium nanowires

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Area of Science:

Materials Science
Nanotechnology
Electrochemistry

Background:

Planar micro-supercapacitors are crucial for system on chip (SoC) technologies and surface mount devices.
Traditional oxide-based capacitors have limitations in areal capacitance and energy/power density.
There is a need for advanced electrode materials to enhance micro-supercapacitor performance.

Purpose of the Study:

To introduce niobium nanowires as a novel material for high-performance planar micro-supercapacitors.
To investigate the electrochemical properties of vertically aligned niobium nanowire electrodes.
To demonstrate the potential of niobium nanowires in next-generation energy storage devices.

Main Methods:

Fabrication of vertically aligned niobium nanowire electrodes.
Electrochemical characterization of micro-supercapacitors using these electrodes.
Measurement of specific capacitance, energy density, and power density.
Determination of equivalent series resistance (ESR).

Main Results:

Achieved specific capacitance of up to 1 kF m^-2 (100 mF cm^-2).
Reached peak energy density of 2 kJ m^-2 and peak power density of 150 kW m^-2.
Demonstrated an exceptionally low equivalent series resistance of 0.27 Ω.
Exhibited power density among the highest for nanomaterial-based planar micro-supercapacitor electrodes.

Conclusions:

Vertically aligned niobium nanowires are a promising material for high-performance planar micro-supercapacitors.
The achieved performance metrics surpass those of many existing nanomaterial electrodes.
Niobium nanowires offer a pathway to significantly advance energy storage solutions for miniaturized electronic systems.