Verified Few-Layer Graphene

Most of the products labeled “Graphene” on the market are not actually graphene. Rahter they are thin flakes of graphite that can be up to a few hundred layer thick.

GrapheneUP® built the first indutrial production of few layer graphene with the largest capacity in Europe

Main Features and
Advantages of GUP®

01
Real few-layer
graphene

Our graphene GUP®, with a no.
of layers between 2 and 5, is
classified as few-layer graphene
in accordance with the ISO/TS
80004-13:2017

02
Large
lateral size

The large average size brings higher thermal conductivity due to the smaller total thermal boundary resistances from the interface area

03
Very low
oxygen content

An high C:O ratio, over 98, improves thermal and electrical conductivity in graphene-based applications

04
Confirmation letter
of compliance

GUP® few-layer graphene have been recognised to fulfil the requirements of the EU’s RoHS compliant (Directive 2011/65/EC)

05
High
aspect ratio

Higher aspect ratio (length over thickness) nanofillers are favoured to establish a connecting pathway for electrons to travel through the specimen at a low percolation threshold

06
Low defect
graphene

The defects of graphene have a direct impact
on the properties of the graphene

SEM Images
of GUP®

Raman Spectroscopy

Dynamic Laser Scattering (DLS)

TEM Images of GUP®

Unique Properties
of GUP®

GUP® is a few layer graphene with low oxygen content produced with a one step process of direct not oxidative exfoliation of graphite.

GUP®’ properties make it a right solution to improve specific characteristics of a multitude of materials and products.
Using ISO/TS 80004-13:2017 and BSI guidelines

2-5
layers
of graphene

98.7-99.6
atomic wt%
of carbon content

48
soccer fields are covered with 1
kg of GUP®

20-50
um
the lateral size

98.7-99.6
nm
apparent thickness

0.3-1.2
atomic wt%
of oxygen content

>120
degree
the contact angle

~ 4
µm
Dv (10)

1.0-1.5
kg
of GUP® in 1 m3

<0.1
atomic wt%
total metals

<0.12
ratio
ID/IG/

~ 25
µm
Dv (50)

>98
ratio
C:O

<1
ppm
Total silicon

<0.02
wt%
moisture content

~ 45
um
Dv (90)

Health
and Safety

As one of the world’s largest producer of graphene, GrapheneUP® is taking the lead in raising transparency of the nature of few-layer graphene and their responsible handling. GrapheneUP® places the protection of its employees, customers, consumers and the environment at the heart of its concerns and has chosen to adopt a fully transparent communication policy concerning the validated data to hand on hygiene, health and environmental aspects.

The company has an ongoing policy of initiating internal as well as external independent testing and research, and it has already accumulated a significant knowledge base on the morphology of graphene, on their safe handling and use in the workplace, and on compliance with the regulatory requirements of the EU.

In 2018 GrapheneUP® was awarded certificates confirming the compliance of its production process with the requirements of the ISO 9001:2015, ISO 14001:2015 and ISO ISO 45001:2018 standards. GrapheneUP’s workers assume responsibility for the ethical, safe, and sustainable development of emerging technologies, in particular by steering away from severe risks.

Graphene GUP® Morphology
Our few layer Graphene GUP® has several advantages in terms of health and safety concerns:

    • large lateral size (small lateral dimensions are more frequently associated with toxicological effects)
    • high C:O ratio

These are 2 key parameters that classify our graphene has a friendly material in terms of health and safety and eco-toxicity based on the present knowledge on this topic. For further and more detail information please refer to this paper:ACS Nano 2018, 12, 10582−10620. Literature shows that graphene has less impact than graphene oxide on living systems.

Handling and Processing of graphene GUP®
In 2019, GrapheneUP® conducted a number of case studies in the workplace to measure the possible exposure of inhaled nanoparticles with workers. The results showed that the measured concentration of graphene in the working environment was at least 10 times below the concentration limit accepted by law (361/2007 Sb).

Confirmation letter of compliance
GUP® few-layer graphene have been recognised to fulfil the requirements of the EU’s RoHS (Restriction of the use of Hazardous Sub stances) compliant according to the definitions and restrictions given by The European Parliament, Directive 2011/65/EC, standards that are aimed at reducing the harmful impact of substances on the environment and on human health. The RoHS statements underlines that GrapheneUP® SE’s graphene substances comply with the permitted concentration values of the ten designated substances and that they do not contain PBB or PBDE (Annex II of the RoHS directive).

Our Proprietary Production Process

We produce few layer graphene flakes with a new proprietary non-oxidative direct exfoliation process that transform graphite or other carbon materials into graphene in less than a second. The raw materials used in the production process are available in the market without any kind of limitations, either in terms of quantity and of geographical location.
We do NOT use oxidants and we preserve the quality of graphene.

We strongly believe that this new approach can dramatically and reliably outperforms existing technologies at a reasonable cost and contribute to speed up the development of new graphene-based products into the market.

Single Step Manifacture of High Quality Few-layer Graphene

Innovative

innovative proprietary process, non-oxidative exfoliation method

Eco

environmental friendly process, low carbon footprint

Scalable

the most scalable production method in the market

No Post Treatment

functionalization of graphene takes place in the one-step reaction

One-Step Process

from graphite to graphene in a one step fast reaction (less than 1 second)

Stable Process

homogeneous and stable quality, batch to batch consistency, full quality control on each batch

Save Energy

can be produced at room temperature in normal atmosphere

Bulk Production

potential production over 160 tons/year, largest one in Europe

High Yield

high yield conversion of graphite to graphene
(~ 99.5%)

No Oxidation

NO oxidation,
NO use of acids or oxidants

Trade-offs Between Different Methods of Production

There exists a trade-off between manufacturing volume and graphene quality.
The CVD and epitaxial methods produce high quality graphene sheets, but have a low scalability.

Our innovative process assures a homogeneous high quality with a scalable production.

Functionalization
of GUP®

“It is not enough to buy a good quality graphene, it is important to use graphene properly functionalized that suits your specific application”

Graphene can be incorporated into a variety of materials to enhance the mechanical, thermal and electrical properties of the overall
structure.

One of the key factors to create graphene-hybrid composite materials lies in the coupling between the base material and graphene. To ensure that its superior properties can be blended into the host material, it may need to be funtionalized, this is where compatible chemical groups are added to the material surface to enable effective dispersion of the graphene.

Covalent bonding of organic functional groups brings to several advantages. For example, enables the dispersion of graphene in solutions and modify the graphene’s electrical properties and can even open a bandgap and create a robust bonding mechanism between the graphene and the matrix.

The chemical modification on the surface of graphene open new properties allowing good interaction with the targeted matrix. One of the main advantages of our production method is that the functionalization of graphene is taking place during the one-step reaction without the need of any further modification.
Our innovative production process give us the opportunity to introduce into the market a new generation of ground-breaking functionalized graphene-based commercial products.

Markets
of GUP®

Automotive

Aerospace

Marine & Nautical

Military & Defense

Sports

Electronics

Batteries & Ultracapacitors

Environmental Remediation

Pharmaceutical

Construction

Textiles

Paints & Coatings

Packaging Industry

Oil & Gas

Cosmetics

Food Industry