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MoS₂/Epitaxial graphene layered electrodes for solid-state supercapacitors.

Mojtaba Amjadipour¹, Jonathan Bradford^2,3, Negar Zebardastan^2,4

¹School of Electrical and Data Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, NSW, Australia.

|February 1, 2021

Summary

This summary is machine-generated.

Combining molybdenum disulfide (MoS₂) with epitaxial graphene (EG) enhances solid-state supercapacitor energy storage. This layered MoS₂/graphene electrode approach overcomes conductivity limitations for on-chip energy applications.

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Published on: November 28, 2017

Area of Science:

Materials Science
Energy Storage
Nanotechnology

Background:

Transition metal dichalcogenides (TMDs) like molybdenum disulfide (MoS₂) show promise for energy storage but are limited by poor conductivity and structural stability.
Integrating highly conductive graphitic materials can potentially overcome these limitations.

Purpose of the Study:

To investigate the use of layered MoS₂/graphene electrodes for on-silicon solid-state supercapacitors.
To determine if combining MoS₂ with epitaxial graphene (EG) improves energy storage performance.

Main Methods:

Fabrication of layered electrodes using MoS₂ and epitaxial graphene (EG) grown on cubic silicon carbide.
Characterization of solid-state supercapacitors employing these layered electrodes.
Comparative analysis of energy storage performance using MoS₂/EG electrodes versus electrodes with EG or MoS₂ alone.

Main Results:

Layered MoS₂/graphene electrodes significantly increased the energy storage capacity of solid-state supercapacitors.
The MoS₂/graphene composite electrodes demonstrated superior performance compared to electrodes made of either EG or MoS₂ individually.
The conductivity of EG and the MoS₂ growth morphology on graphene were identified as critical factors.

Conclusions:

Layered MoS₂/graphene composites are effective for enhancing on-chip energy storage in solid-state supercapacitors.
The integration of TMDs with conductive graphene offers a viable strategy for improving energy storage devices.
This approach addresses key limitations of TMDs, paving the way for advanced on-chip energy solutions.