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Hybrid Copper-Silver-Graphene Nanoplatelet Conductive Inks on PDMS for Oxidation Resistance Under Intensive Pulsed
Changyong Yim1, Zachary A Kockerbeck1, Sae Byeok Jo2
1Department of Mechanical and Manufacturing Engineering, University of Calgary , Calgary, Alberta T2N 1N4, Canada.
ACS Applied Materials & Interfaces
|October 6, 2017
Summary
A new, cost-effective method creates durable, flexible conductive tracks on poly(dimethylsiloxane) (PDMS) using copper-silver-graphene nanoplatelets. These electrodes show enhanced oxidation resistance, ideal for flexible electronic applications.
Area of Science:
- Materials Science
- Nanotechnology
- Flexible Electronics
Background:
- Developing reliable conductive materials for flexible substrates like poly(dimethylsiloxane) (PDMS) is crucial for advanced electronic devices.
- Existing methods often face challenges with durability, conductivity, and cost-effectiveness.
Purpose of the Study:
- To propose a simple, low-cost, and reliable method for producing conductive tracks and transferring them onto PDMS substrates.
- To investigate the properties of copper-silver-graphene nanoplatelet composites for flexible electrode applications.
Main Methods:
- Fabrication of flexible electrodes using conductive nanoparticulates (copper, silver nitrate, graphene nanoplatelets) under intensive pulsed light.
- Transfer of electrodes to PDMS substrates via a pouring, curing, and peeling process.
Main Results:
- The copper-silver-graphene nanoplatelet combination enhanced oxidation resistance and durability on PDMS.
- Silver nitrate addition mitigated oxidation during PDMS curing.
- Graphene nanoplatelets improved conductivity and prevented mechanical cracking, unlike films without them.
Conclusions:
- A robust and cost-effective method for creating conductive tracks on PDMS has been established.
- The developed copper-silver-graphene electrodes demonstrate excellent performance as flexible electrodes with improved thermal oxidation resistance.
- This technique holds promise for applications such as flexible Joule heaters.
