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Sigma-Aldrich

3D Printable Graphene Oxide Ink

greener alternative

avg. no. of layers, 1

Synonym(s):

3D Printing graphene oxide ink, Direct extrusion printable graphene oxide ink

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About This Item

UNSPSC Code:
12352119
NACRES:
NA.23

description

Graphene oxide sheet size: 300-800 nm lateral size
Number of layer for graphene oxide: single layer

Quality Level

100

form

liquid

feature

avg. no. of layers 1

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

concentration

40 mg/mL (Graphene oxide aquous ink)

viscosity

100-210 Pa.s (25 °C at shear rate of 10 s-1)

greener alternative category

, Enabling

storage temp.

2-8°C

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Green Chemistry. This product has been enhanced for energy efficiency. Click here for more information.

Application

This product can be used in material extrusion 3D printing technique.
This product is a thixotropic ink based on graphene oxide (GO) nanosheets. It is suitable for various direct ink write (aka robocasting) printing technologies. The ink offers a stable dispersion of GO, high viscosity, good printability, and long shelf life. Freeze-dried and annealed patterns provide low electrical resistivity and high surface area. The ink is suitable for applications such as batteries, supercapacitors, electrocatalysis, etc.

Preparation Note

Before Printing:
Bring the ink to room temeprature, best to mix the ink in a planetary mixer before usage.

Printing:
Recommended 3D printing nozzle diameter size is 400 micron.

Post printing:
After 3D printing, this ink can be directly freeze-dried in liquid nitrogen and vacuum to obtain free- standing graphene oxide aerogel.
This ink can also be processed by adding gelling agents to enable a covalent bond established between the graphene oxide sheets. Gelation agents such as ammonium carbonate, ammonium hydroxide, resorcinol formaldehyde have all been reported to be sufficient. After gelation, the wet GO gels printed parts are washed in acetone to remove water from the pores. Supercritical CO2 can then be used to dry the GO gels.

Curing:
Parts that are printed with gelling agent can be cured in sealed glass vials at 85 °C.
The dried aerogels are generally reduced to graphene aerogels by thermal treatment at 1050 °C under inert atmosphere. Other chemical reduction methods include hydrazine reduction, dried aerogels can also be reduced using hydroiodic acid, followed by washing in ethanol, water and then freeze drying.

Storage and Stability

Tighly seal remaining ink, and store in 2-8 °C fridge.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Toward Macroscale, Isotropic Carbons with Graphene-Sheet-Like Electrical and Mechanical Properties.
Worsley M A, et al.
Advances in Functional Materials, 24(27), 4259-4264 (2014)
Bin Yao et al.
Advanced materials (Deerfield Beach, Fla.), 32(8), e1906652-e1906652 (2020-01-18)
The performance of pseudocapacitive electrodes at fast charging rates are typically limited by the slow kinetics of Faradaic reactions and sluggish ion diffusion in the bulk structure. This is particularly problematic for thick electrodes and electrodes highly loaded with active
Versatile mechanically strong and highly conductive chemically converted graphene aerogels..
Liu Y, et al.
Carbon, 125, 352-359 (2017)
Sungjin Park et al.
Nature communications, 3, 638-638 (2012-01-26)
Chemically modified graphene platelets, produced via graphene oxide, show great promise in a variety of applications due to their electrical, thermal, barrier and mechanical properties. Understanding the chemical structures of chemically modified graphene platelets will aid in the understanding of
Cheng Zhu et al.
Nature communications, 6, 6962-6962 (2015-04-23)
Graphene is a two-dimensional material that offers a unique combination of low density, exceptional mechanical properties, large surface area and excellent electrical conductivity. Recent progress has produced bulk 3D assemblies of graphene, such as graphene aerogels, but they possess purely
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