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924458

Sigma-Aldrich

Single-layer graphene sheets for battery

greener alternative

Bio-sourced, avg. no. of layers, 1

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Synonym(s):
Battery graphene, Green alternative graphene, rGO
Linear Formula:
CxOyHz
CAS Number:

Quality Level

description

ID/IG: 0.84; I2D/IG: 1.66 (Horiba instrument - Laser 532 nm, Hole 349.983, Grating 1800, Filter 5%, Acquisition time 3s, Accumulations 5, Objective 100X_VIS)
Stability: >3000 °C in inert (TGA)

feature

avg. no. of layers 1

greener alternative product characteristics

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

surface area × surface area

1155.3 m2/g × 69 m2/g

impurities

<0.075% Residual Acid Content (EDS and XPS)
<0.15% Oxygen content

particle size

≤64 μm (ASTM Sieve analysis)

pore size

1.7 cm3/g±0.22 cm3/g pore volume

solubility

water: insoluble

bulk density

0.15‑0.18 g/cm3

greener alternative category

General description

The bio-sourced high surface area (1155 ± 69 m2/g) single layer sheets graphene for anode has an extremely high pore volume, enabling maximum energy power and density, as well as fast charging and no degradation over thousands of cycles.
The capacity of our anode after charging at 10 C ( minutes) is similar to graphite capacity at a charge rate of 0.1 C (i.e. 10 hours charging time). It can charge in a few minutes instead of hours, and showed a 5X increase in capacity at 0.1C vs. graphite anode (standard).
Our bio-sourced graphene is manufactured through an unique environmentally friendly non-oxidizing process that involves plant-based raw materials.
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product belongs to enabling category of greener alternatives, and has been enhanced for energy efficiency. Click here for more information.

Application

It is effective at providing barrier properties, transport, electrical and thermal conductivity. The alpha grade graphene is shown to improve mechanical properties such as stiffness, strength, surface hardness and hydrophobicity.
Due to its superior properties, the alpha grade graphene have applications in:
1. Additives for light weight composites which require high specific strengths
2. Transparent, flexible and conductive applications unique to Photo Voltaic Solar cells
3. Oxidation-resistant anti-corrosion coatings
4. Ultra-filtration and separation barriers
5. Anode and cathode materials for lithium-ion batteries;
6. Conductive coatings for battery electrodes
7. Electrically conductive inks got printed electronics
8. Additive for super-strong, hydrophobic concrete
9. Electronic and optoelectronic devices

Storage Class Code

11 - Combustible Solids

WGK

WGK 3


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Highly efficient adsorbent for the transformer oil purification by ZnO/Graphene composite." Arabian Journal of Chemistry
T.T. Vu et al.
Arabian Journal of Chemistry, 13, 7798-7808 (2020)
Tribological and corrosion performance of epoxy resin composite coatings reinforced with graphene oxide and fly ash cenospheres.
J. Li, et al.
Journal of Applied Polymer Science, 138, 50042-50042 (2021)
Screen-Printing of a Highly Conductive Graphene Ink for Flexible Printed Electronics.
P.He et al.
ACS Applied Materials & Interfaces, 11, 32225?32234-32225?32234 (2019)
High Voltage Li-Ion Battery Using Exfoliated Graphite/Graphene Nanosheets Anode
M.Agostini, et al.
ACS Applied Materials & Interfaces, 8, 10850?10857-10850?10857 (2016)
Graphene-modified LiFePO4 cathode for lithium ion battery beyond theoretical capacity
L.-H. Hu et al.
Nature Communications, 4, 1687-1687 (2013)

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