Upload
others
View
3
Download
0
Embed Size (px)
Citation preview
2D Materials:A General Overview
A specialty and commodity chemical distributor operating out of Asia, Europe, America and the
Middle East.
We provide services along the supply chains: ranging from the procurement, product development
and individual mixing to logistics and recycling.
One of the top 10 distributors in Europe
Group Structure
Versarien 2D products
Two scalable and patented manufacturing processes
• Nanene - high quality few-layer graphene nano-platelets with low defect ratio and
large lateral dimensions - Mechanical Chemical Exfoliation
• Graphene inks - Micro-fluidisation
Also available
• Few Layer Boron Nitride
• Graphene oxide
• Reduced graphene oxide
Overview of Graphene….
• 2004: Isolated by Geim &
Novoselov
• 2010: Geim & Novoselov
awarded Nobel Prize or
Physics
• 2005-2014: 25,000 patents
registered representing
13,000 patent families
• Graphene patents by
number: 1st China; 2nd
Korea; 3rd US; 4th Japan; 5th
Taiwan. However, note that
the majority of China patents
cover only China.
GRAPHENE - BASIC PROPERTIES
Graphene shows a unique combination of properties which can be
exploited to enhance existing systems, or facilitate multi-functional
materials.
Properties include:
• High strength
• Flexibility
• Semi-Transparency
• Electrical conductivity in the X-Y plane
• Thermal conductivity
• Barrier to Gas Permeation
• Bio-Compatibility
The future…Graphene enabled…
Smart materials and textiles
Stronger and lighter materials e.g. carbon fibre reinforced plastics
Superior batteries and supercapacitors
Flexible electronics inc. sensors
Faster electrical components
Superior radio frequency antennas – novel format and construction
Optoelectronics Inc. Lasers
Anti-static polymer systems and coatings
Anti-corrosion coatings
Strength - Thermal - Electronics
POLYMER COMPOSITES
Addition of graphene can improve mechanical performance, electrical
and thermal conductivity of polymers and polymer composites
Major EU composites project (NANOMASTER) included partners LEGO,
Phillips Consumer Electronics and Rochling (auto components)
Applications include:
• Sports goods: HEAD tennis racquet has shown reduced weight and
improved stiffness and performance.
• Aerospace: Electrically conductive resin systems have shown potential
for anti-static composite systems, and also for electrical resistance
heating for anti-icing.
• Automotive: Composite suspension components, car body
composites, heater membranes, anti-static tyres
BARRIER
Graphene is a barrier to gas diffusion, including Helium
Applications include:
• Additives to improve surface coatings such as anti-rust and paints
for corrosion protection
• Moisture barrier paints for buildings
• Food packaging – barrier to water and oxygen to improve shelf life
FILTRATION
Graphene Oxide has selective barrier properties, applications
include:
• Water filtration membranes. Separation of organic solvent from
water
• Removal of water from a gas
• University of Manchester have developed a graphene –oxide
membrane with tunable pore sizes for desalination of sea water.
• Organic solvent nanofiltration (OSN). University of Manchester
have also demonstrated that OSN can selectively remove other
species, such as separating organic solvents. Examples include
removing colour dye from methanol, molecules from organic
solvents for e.g. pharmaceuticals; filtering whiskey allowed
alcohol to pass through but filtered out the larger molecules which
produce the brown colouration.
ENERGY STORAGE
High surface area and electrical properties of graphene open up new
opportunities in batteries and supercapacitors
Applications include:
• Extending the life of Li-Ion batteries
• Reducing battery charge time
• Reducing battery size and weight – e.g. for wearable electronics
BATTERIES
Huawei announced results for graphene-assisted Li-ion batteries.
Main effect has been improved thermal management – e.g. ability to
operate battery at higher temperatures
• Charging 3,000mAh battery to 48% in five minutes
• Extended life – 70% capacity remaining after 2000 cycles at
60degC
• Mobile phone battery due to be launched Dec 2018
FUEL CELLS
• Modelling at Rice University USA indicates that graphene could
replace platinum in fuel cells
• Work at Berkeley Lab USA on Graphene-encapsulated
magnesium nanocrystals for hydrogen storage, overcomes
problems in metal hydrides by increased rate of absorption and
desorption
BIOMEDICAL
Graphene is being investigated for opportunities in medicine
Applications include:
• Targeted drug delivery
• Diagnostic kits and sensors e.g. blood sugar level kits
• Retinal prostheses (i.e. graphene contact lens)
ELECTRONICS & SENSORS
Graphene particulate can be formulated into inks for printing of
circuits and devices
Applications include:
• Printed conductive tracks and circuits
• Printed sensors
• Printed antennas e.g. RFID
● Graphene printed sensors, e.g. strain sensors
Graphene Inks
WEARABLE ELECTRONICS
Applications under development include:
• ‘Smart skin’ tattoos
• Battery-free healthcare & fitness monitoring
Credit: University of Manchester
PRINTED ELECTRONICS
• RFID printed graphene tags & tickets for security, tags for food
and consumer stores for real-time stock control & anti-theft
• Conductive printed graphene electrodes on e.g. paper
DISPLAYS
Image Credit: TU Delft/Graphene
• Work at TU Delft discovered interference effect between
graphene layers which produced colour changes under
loading. This effect is being developed into pixels for
colour displays
Thank you for your time!
Lewis Chard