# Graphene nanoplatelets powder (GNPs)
Source: https://powdchem.com/products/graphene-nanoplatelets-powder/
Page type: Product detail
[Carbon & 2D materials]() PC-208
**C** Nominal elemental composition **Graphene nanoplatelets**
Source GNP powder to your specification.
Send a product code, the size you need or what you plan to make. We’ll look for suitable supply options and clarify the specifications, documents and delivery terms.
[Compare specifications]() [Request a quote]()
No fixed minimum order at Nike. Tell us your quantity and destination. We’ll check availability, supplier minimums and delivery timing.
[Image: Black graphene nanoplatelets powder in a clear glass dish]()
GNP powder selection references
## Explore sourcing directions.
Compare four specification profiles. Choose the closest reference or send your own target.
[Download selection guide · PDF]()
GNP powder selection references
| Property | Reference A · thickness / lateral size 1–5 nm · ~5 µm | Reference B · thickness / lateral size ~2 nm · 2–3 µm | Reference C · thickness / lateral size 2–10 nm · 2–7 µm | Reference D · thickness / lateral size ~20 nm · 0.2–1 µm |
| --- | --- | --- | --- | --- |
| Thickness | 1–5 nm | ~2 nm | 2–10 nm | ~20 nm |
| Lateral size | ~5 µm | 2–3 µm | 2–7 µm | 0.2–1 µm |
| BET surface area | 90–130 m²/g | — | 20–40 m²/g | ~80 m²/g |
| Carbon content | — | — | >99% | ~96% |
| Purity | — | 98% | — | — |
| What we’ll verify | We’ll check the size distribution and available dispersion guidance for your matrix. | We’ll check the purity definition, test method and reported impurities. | We’ll check the carbon test method and available oxygen and impurity data. | We’ll check how thickness and lateral size were measured and whether PSD includes agglomerates. |
| Your next step | [Review inquiry for 1–5 nm · ~5 µm]() | [Review inquiry for ~2 nm · 2–3 µm]() | [Review inquiry for 2–10 nm · 2–7 µm]() | [Review inquiry for ~20 nm · 0.2–1 µm]() |
A–D are selection references, not confirmed stock grades. A dash indicates an unspecified property. We’ll confirm the proposed grade, specifications, availability and documents with your quotation.
**Carbon content and purity are different claims.** Compare their definitions, analytical methods and impurity limits before treating two values as equivalent.
### Where to start
#### Need narrower platelets?
D has platelets 0.2–1 µm wide; A is approximately 5 µm wide. Start with this difference if width limits your process. Clumps can be larger than individual platelets, so check powder particle size separately before choosing a nozzle or filter.
#### Need thinner platelets?
Compare A, B and C with D’s approximately 20 nm thickness. Treat thickness as one selection factor. Layer count, ease of mixing and finished performance need their own evidence.
#### Comparing surface area or purity?
A lists a BET surface area of 90–130 m²/g; C lists 20–40 m²/g. BET measures the surface accessible to gas during testing. Compare the test conditions and try the powder in your mixture. For purity or carbon content, compare values measured on the same basis.
Use size and surface chemistry to narrow the options. Compare samples in the same recipe and process.
### Need a different form?
Ask about larger platelets, a specified layer count, surface-treated powder, a dispersion or a masterbatch. Functionalized GNP, graphene oxide and reduced graphene oxide are assessed as distinct materials.
[Describe your requirement]()
## Find your application
Tell us what you are making and the result you need. We can start from your application if you have not chosen a grade.
[Materials research]()
### Conductive & antistatic composites
The particles need to form a conductive network in your polymer or rubber. Compare several addition levels using the same mixing and resistivity test.
**Your process:** Polymer or rubber type, required resistivity and processing method.
**Our sourcing focus:** Platelet dimensions, surface treatment and available electrical test data.
[Discuss conductive applications]()
### Thermal management
Heat can travel differently along a layer and through it. Tell us which direction matters, then test your finished mixture.
**Your process:** Base material, required heat transfer and how much filler you can add.
**Our sourcing focus:** Dimensions, dispersion requirements and the conditions behind thermal test results.
[Discuss thermal applications]()
### Coatings & resins
See whether the powder wets and mixes evenly in your coating. Test the cured coating at the thickness you plan to use.
**Your process:** Water or solvent system, coating thickness and the property you want to improve.
**Our sourcing focus:** Surface chemistry, platelet size and available dispersion guidance.
[Discuss coatings and resins]()
### Battery & electrode research
Test samples in your electrode recipe. Purity limits and electrochemical performance need to be assessed for the selected grade.
**Your process:** Electrode type, the powder’s role and how you prepare the slurry.
**Our sourcing focus:** Available carbon-content, metal-impurity, moisture and BET data for the proposed grade.
[Discuss electrode research]()
### Materials research
Record the grade and batch, and use the same measurement method each time. This helps you compare results when the material or process changes.
**Your process:** Reference product code, experiment and measurements you want to compare.
**Our sourcing focus:** Product identity, size measurement methods and available characterization records.
[Discuss research requirements]()
[Electronics & semiconductor materials]() [Electrode & energy materials]()
## About graphene nanoplatelets
Graphene nanoplatelets (GNPs) are thin, platelet-shaped carbon particles made of stacked graphene layers. The name covers many grades with different sizes and surface properties.
Graphite powder, graphene oxide (GO), reduced graphene oxide (rGO), dispersions and masterbatches are separate material requests.
[Compare carbon & 2D materials]()
**Product name:** Graphene nanoplatelets powder
**Industry name:** Graphene nanoplatelets · GNPs
**Nominal formula:** C · Carbon
**CAS identification:** Grade-specific; checked against the proposed supplier’s documents.
**Material family:** Carbon nanomaterials / 2D materials
**Product form:** Powder
## Which size does a supplier mean?
**Thickness** is how thick a platelet is. **Lateral size** is its width across the face. **Powder particle size** can include clumps of platelets.
These numbers answer different questions. When comparing grades, ask how each was measured.
Diagram: Platelet dimensions and powder agglomerates A layered platelet with lateral and thickness dimensions alongside grouped particles representing a powder-size distribution. Schematic, not to scale.
Dimensional guide · schematic, not to scale
## GNP, GO, rGO or graphite?
These materials behave differently in water, solvents and polymers. Start with the mixture you need to make.
[**GNP** Graphene nanoplatelets Stacks of thin graphitic platelets.]() [**GO** Graphene oxide Oxidized sheets with oxygen-containing groups.]() [**rGO** Reduced graphene oxide Reduced GO with residual oxygen and defects.]() [**Graphite** Graphite powder Graphitic particles; thickness varies by grade.]()
Orange marks represent oxygen-containing groups. Concept sketches show structural differences, not measured layer counts or composition.
Qualitative comparison of carbon material requests
| Material | What it is | Before you choose |
| --- | --- | --- |
| Graphene nanoplatelets (GNP) | Small, flat carbon particles. Grades vary in width, thickness and surface treatment. | Size and how well it mixes with your liquid or polymer. For treated powder, check the treatment and composition. |
| Graphene oxide (GO) | Oxidized carbon sheets with oxygen-containing groups. Their behavior in water differs from unmodified GNP. | Oxygen content, surface chemistry and mixing conditions. Test conductivity for your intended use. |
| Reduced graphene oxide (rGO) | GO after reduction. The process affects the oxygen and defects left in the material. | How it was reduced, its composition and measured conductivity. Reduction also changes how it disperses. |
| Graphite powder | A graphitic carbon powder. The name alone does not tell you the thickness of its particles. | Particle shape and size. If replacing GNP, compare measured platelet thickness too. |
## Production route and layer count
**How mechanical exfoliation, liquid processing and CVD differ**
Mechanical exfoliation uses force to separate layers of graphite. Liquid-phase exfoliation does this in a liquid, often using shear mixing or ultrasound. The two descriptions can overlap. Washing, separation and drying also affect the final powder, including any solvent or dispersant left behind.
Reducing GO produces rGO, whose remaining oxygen and defects depend on the process. CVD commonly grows graphene films on a supporting surface. Compare a CVD film with other films and a GNP powder with other powders. Even at the same stated thickness, products can differ in width and surface chemistry.
**Can thickness tell me the number of layers?**
The spacing between graphitic layers is approximately 0.335 nm. A measured flake thickness can also include effects from the supporting surface, attached molecules and instrument settings. Simply dividing that reading by 0.335 can give a misleading layer count.
For few-layer graphene powder, ask how many flakes were measured, the range of layer counts and the method used. A 1–5 nm thickness label alone does not mean fewer than five layers.
## Dispersion and processing
Start with a small batch using the liquid, resin or polymer you plan to use in production.
**How to run a first mixing trial**
1. **Choose the medium.** See whether the powder wets in your chosen liquid. Some graphene grades use N-methyl-2-pyrrolidone (NMP) or dimethylformamide (DMF). These are polar aprotic solvents, and suitability depends on the powder’s surface treatment. Water-based mixtures often need a dispersant, surfactant or powder treated to mix with water. Check the solvent SDS and whether the solvent can be removed or left in your finished material.
2. **Record the formulation.** Record the powder grade, concentration, dispersant and order of addition. Wet the powder with a compatible liquid first, and compare small batches before making more.
3. **Control the mixing conditions.** Record the mixer, batch volume, mixing time and temperature. Shear mixing and ultrasound can change flake size, so check the result when you change the settings.
4. **Evaluate the result.** Look for clumps and examine samples under a microscope where appropriate. Record how much settles over a set time and whether it mixes evenly again. Prepare each film or composite the same way before testing performance.
Raman D/G describes aspects of the carbon structure, including edges and defects. Use settling, clump size and mixing observations to assess dispersion stability.
## What conductivity numbers mean
### Electrical conductivity
One published study measured approximately 10² S/m (about 100 S/m) for graphene powder compressed at 5 MPa. This gives a sense of scale for that experiment. References A–D have not been verified against this result. Material, density and contact between particles affect the reading.
When comparing data, look at what was tested: loose powder, a pressed sample, a film or a composite. The report should state the method, test direction and density or pressing conditions. A pressed-powder result will not predict your resin’s resistivity. Agree on batch conductivity testing if you need it included in the CoA.
### Thermal conductivity
A single platelet, pressed powder, film and filled polymer can give different results. Compare the test method, density and temperature. Also check the direction of heat flow: along the layer (in-plane) or through it (through-plane). Platelet alignment and contact with the surrounding material affect the result.
Try several amounts in your mixture. State whether each amount is by weight (wt%) or volume (vol%), and record viscosity and processing conditions.
## Storage and handling
Keep the powder in a tightly closed, labelled container and control dust during weighing and transfer. Use suitable local extraction and the protective equipment specified in the applicable SDS. Store in a well-ventilated place away from incompatible materials.
Follow the selected grade’s storage and drying instructions. Ask for its shelf life or retest date and whether it needs an inert atmosphere. These requirements vary by grade.
**Further technical reading**
- [Electrical conductivity of powder compacts, Powder Technology]()
- [Shear exfoliation of graphene, Nature Materials]()
- [Thickness and layer-count characterization, Scientific Reports]()
- [Controlled sonication and flake size, Scientific Reports]()
- [Raman characterization of mass-produced GNP, Beilstein Journal of Nanotechnology]()
- [Directional thermal and electrical properties of GNP composites, Scientific Reports]()
## Details to compare before ordering
Use this checklist when reviewing a proposed grade or replacing an existing product.
**View the detailed specification checklist**
Agree the specifications and batch acceptance limits for the selected grade before ordering.
Graphene nanoplatelets powder selection guide
| Property | What to compare | Why it matters |
| --- | --- | --- |
| Grade & supplier code | Reference grade, product code and document revision | Keeps every comparison tied to an identifiable material. |
| Layer thickness / count | Thickness in nm and/or number of layers, with the measurement basis | A thickness statement and a layer-count estimate need their own evidence. |
| Lateral platelet size | Single-platelet width or diameter, distribution and method | Describes the platelet across its surface. |
| Powder particle-size distribution | D10 / D50 / D90, test method and dry or wet dispersion conditions | May describe agglomerates rather than individual platelets. |
| Carbon content / purity | Target content, reporting basis and analytical method | A carbon-content value should be read alongside the impurity profile. |
| BET surface area | Target m²/g, method and pretreatment conditions | Compare results only when their measurement conditions are understood. |
| Impurities & moisture | Application-specific oxygen, ash, metals, water or residual limits | Focus the review on the limits that matter to your process. |
| Surface chemistry | Unmodified or functionalized form; treatment and relevant composition | Helps assess matrix compatibility and the proposed dispersion route. |
For electrical, thermal or mechanical results, include the sample form, formulation, loading, processing and test conditions. A performance value from one formulation does not establish the result in another.
GNP powder sourcing & supply
## How we handle your GNP inquiry
Nike is a materials sourcing and trading company. Send your specification and quantity. We’ll check suitable sources, available documents and delivery terms.
[Discuss your GNP requirement]()
### Match the material
We’ll compare source grades with your required form, dimensions and composition, and clarify which limits your process needs.
### Check the available evidence
We’ll request the available TDS, applicable SDS and batch CoA, and check their product codes, revisions and reported tests.
### Confirm the proposed supply
We’ll check pack sizes, supplier minimums, availability, lead time and sample arrangements for your destination.
### Technical and batch documents
A technical data sheet (TDS) describes the grade. A certificate of analysis (CoA) gives the reported batch test results. A safety data sheet (SDS) covers handling and safety. Let us know which documents you need.
[Quality & documentation]() [Samples & testing]() [Request GNP documents]()
## Product and ordering questions
Identity, measurements and sourcing questions.
**Which CAS number should I use?**
Use the CAS number in the selected grade’s documents. GNP products can use different CAS assignments. Include the product code, composition and powder form when comparing products.
**What determines the price of graphene nanoplatelets powder?**
Price depends on the grade and quantity, as well as packaging, testing and delivery. Send your requirements and destination so we can quote on a clear basis.
**Is graphene powder the same as graphene nanoplatelets?**
Graphene powder is a broad product name. GNP usually means small, flat particles made of stacked graphene layers. When comparing products, look at platelet width, thickness and surface treatment as well as the name.
**How do I choose between GNP, GO and rGO?**
Choose around the liquid or polymer you use and the result you need. GO has oxygen-containing groups that can help with water-based processing. Reducing GO produces rGO and changes its conductivity and dispersibility. GNP may need a dispersant. Try the selected grade in your own mixture before switching materials.
**Does 1–5 nm mean fewer than five layers?**
No. The measured thickness depends on the test method and sample preparation. An AFM reading can include effects from the supporting surface or material attached to the flake. If you need few-layer graphene powder, ask for the measured layer distribution and how it was determined.
**Should I choose 1–5 nm or about 20 nm platelets?**
Look at width as well as thickness. A is 1–5 nm thick and about 5 µm wide. D is about 20 nm thick and 0.2–1 µm wide. Because both dimensions differ, compare samples using the same recipe and mixing process.
**Can Raman D/G ratio show whether my dispersion is good?**
Raman D/G helps describe the carbon structure, including edges and defects. To assess dispersion, look for clumps, track how the mixture settles and see whether it mixes evenly again. Then test the property you need. TEM and AFM images show sampled flakes, so they should be used alongside checks of the whole mixture.
**Can I use a published graphene thermal conductivity for my composite?**
Use results measured on a similar material and in the same heat-flow direction. In a composite, the amount of GNP, its alignment and its contact with the surrounding material all affect heat transfer. Test the proposed grade in your own mixture.
**How much GNP should I add?**
Try several amounts in your own recipe. Record whether each percentage is by weight (wt%) or volume (vol%). Compare conductivity with viscosity, ease of processing and mechanical properties before choosing the amount.
**What should I send a GNP powder supplier before I buy?**
Send a product code or target size, what you will use it for, the quantity and destination. Include any required test limits or documents. If you are buying graphene nanoplatelets for a new process, start with a sample evaluation.
## Request GNP powder
Start with a product code, specification or intended use.
Add your requirements, then review and send your inquiry by email or WhatsApp.
[Continue with the material name only]()
[info@powdchem.com]() [WhatsApp +852 4607 0157]()