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900411 Sigma-Aldrich

Graphene nanoplatelets

25 μm particle size, surface area 50-80 m2/g

Synonym: xGnP H-25

  • CAS Number 7782-42-5

  • Empirical Formula (Hill Notation) C

  • Molecular Weight 12.01

  •  EC Number 231-955-3



description   residual acid content: <0.5 wt%
form   powder
composition   oxygen content, <1%
thickness   15 nm , average
particle size   25 μm
surface area   50-80 m2/g
bulk density   0.03‑0.1 g/cm3


General description

• xGnP® graphene nanoplatelets are unique nanoparticles consisting of short stacks of graphene sheets having a platelet shape.
• The unique size and platelet morphology of xGnP® graphene nanoplatelets makes these particles especially effective at providing barrier properties, while their pure graphitic composition makes them excellent electrical and thermal conductors. xGnP® graphene nanoplatelets can improve mechanical properties such as stiffness, strength, and surface hardness of the matrix material.
• xGnP® graphene nanoplatelets are compatible with almost all polymers, and can be an active ingredient in inks or coatings as well as an excellent additive to platics of all types. The unique manufacturing processes are non-oxidizing, so material has a pristine graphitic surface of sp2 carbon molecules that makes it especially suitable for applications requiring high electrical or thermal conductivity.
• Grade H particles have an average thickness of approximately 15 nanometers and a typical surface area of 50 to 80 m2/g. Grade H is available with average particle diameters of 5, 15 or 25 microns.
• Note: Graphene nanoplatelets have naturally occurring functional groups like ethers, carboxyls, or hydroxyls that can react with atmospheric humidity to form acids or other compounds. These functional groups are present on the edges of the particles and their wt% varies with particle size.


• Ultracapacitor electrodes
• Anode materials for lithium-ion batteries
• Conductive additive for battery electrodes
• Electrically conductive inks
• Thermally conductive films and coatings
• Additive for lightweight composites
• Films or coatings for EMI shielding
• Substrate for chemical and biochemical sensors
• Barrier material for packaging
• Additive for super-strong concrete
• Additive for metal-matrix composites

Legal Information

xGnP is a registered trademark of XG Sciences, Inc.

Safety & Documentation

Safety Information

NONH for all modes of transport


Certificate of Analysis

Protocols & Articles


Recent Advances in Scalable Synthesis and Processing of Two-Dimensional Materials

1Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA 2School of Materials Science and Engineering, Nankai University, Tianjin, 300350,...
Deep Jariwala,1* Jian Zhu,2 Jung-Woo Seo,3 and Mark C. Hersam3*
Material Matters, 2018, 13.1
Keywords: Absorption, Adsorption, Catalysis, Centrifugation, Chemical vapor deposition, Crystallization, Degradations, Deposition, Diffusion, Electronics, Filtration, Ligands, Materials Science, Microscopy, Nanomaterials, Nucleic acid annealing, Oxidations, Photoexcitation, Photovoltaics, Purification, Recombination, Scanning electron microscopy, Semiconductor, Separation, Solar cells, Solvents, Sonication, Sublimation

Peer-Reviewed Papers


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