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Scalable 100% yield production of conductive graphene inks
ScienceDaily
2/21/2017
Excerpts:
Source: Graphene Flagship
Summary: Conductive inks are useful for a range of applications, including printed and flexible electronics such as radio frequency identification (RFID) antennas, transistors or photovoltaic cells. The advent of the internet of things is predicted to lead to new connectivity within everyday objects, including in food packaging. There is a clear need for cheap and efficient production of electronic devices using stable, conductive and non-toxic components.
Conductive inks are useful for a range of applications, including printed and flexible electronics such as radio frequency identification (RFID) antennas, transistors or photovoltaic cells. The advent of the internet of things is predicted to lead to new connectivity within everyday objects, including in food packaging. There is a clear need for cheap and efficient production of electronic devices using stable, conductive and non-toxic components.
A new method for producing high quality, water-based conductive graphene inks with high concentrations has been developed by researchers from the Graphene Flagship working at the Cambridge Graphene Centre at the University of Cambridge, UK. The novel method uses ultrahigh shear forces in a microfluidization process to exfoliate graphene flakes from graphite. The process converts 100% of the starting graphite material into usable flakes for conductive inks, avoiding the need for centrifugation and reducing the time taken to produce a usable ink. The research is published in ACS Nano. The inks produced by the microfluidization process have high concentrations of up to 100 g of graphene flakes per litre and can be optimised for screen printing. These inks can also be used to create novel composites, coatings and energy storage devices. This method can easily be applied to other layered materials, such as hexagonal boron nitride or transition metal dichalcogenides, to provide a family of printable circuit components -- conductor, insulators and semiconductors -- with which to build printed electronics with different functionalities. These inks are ideal for applications where low-cost is important.
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Story Source: Materials provided by Graphene Flagship. Original written by Sophia Lloyd. Note: Content may be edited for style and length.
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View the complete article, including image, at:
https://www.sciencedaily.com/release...0221081949.htm
ScienceDaily
2/21/2017
Excerpts:
Source: Graphene Flagship
Summary: Conductive inks are useful for a range of applications, including printed and flexible electronics such as radio frequency identification (RFID) antennas, transistors or photovoltaic cells. The advent of the internet of things is predicted to lead to new connectivity within everyday objects, including in food packaging. There is a clear need for cheap and efficient production of electronic devices using stable, conductive and non-toxic components.
Conductive inks are useful for a range of applications, including printed and flexible electronics such as radio frequency identification (RFID) antennas, transistors or photovoltaic cells. The advent of the internet of things is predicted to lead to new connectivity within everyday objects, including in food packaging. There is a clear need for cheap and efficient production of electronic devices using stable, conductive and non-toxic components.
A new method for producing high quality, water-based conductive graphene inks with high concentrations has been developed by researchers from the Graphene Flagship working at the Cambridge Graphene Centre at the University of Cambridge, UK. The novel method uses ultrahigh shear forces in a microfluidization process to exfoliate graphene flakes from graphite. The process converts 100% of the starting graphite material into usable flakes for conductive inks, avoiding the need for centrifugation and reducing the time taken to produce a usable ink. The research is published in ACS Nano. The inks produced by the microfluidization process have high concentrations of up to 100 g of graphene flakes per litre and can be optimised for screen printing. These inks can also be used to create novel composites, coatings and energy storage devices. This method can easily be applied to other layered materials, such as hexagonal boron nitride or transition metal dichalcogenides, to provide a family of printable circuit components -- conductor, insulators and semiconductors -- with which to build printed electronics with different functionalities. These inks are ideal for applications where low-cost is important.
.................................................. ................
Story Source: Materials provided by Graphene Flagship. Original written by Sophia Lloyd. Note: Content may be edited for style and length.
.................................................. .............
View the complete article, including image, at:
https://www.sciencedaily.com/release...0221081949.htm