Graphene Characterization Methods

Our team has established a comprehensive analytical and quality control system for characterizing the properties and quality of graphene-related 2D materials (GR2Ms). This system integrates both ISO/IEC-standardized characterization methods and our developed or adapted techniques.

The system encompasses 20 distinct characterization methods and over 50 parameters to evaluate the structural, chemical, electrical, and mechanical properties of Gr2Ms. These methods are applicable to both localized analysis of individual particles and bulk analysis which is our preferred method. The system is versatile and can be used to test graphene samples in various forms, including powders, pastes, and dispersions.

We offer characterization services to industry partners and graphene manufacturers, helping them verify the properties of their graphene materials. Additionally, we assist end users in determining the specific GR2M properties required for their applications.

1. D Losic, F Farivar, PL Yap, Refining and Validating Thermogravimetric Analysis (TGA) for Robust Characterization and Quality Assurance of Graphene-Related Two-Dimensional Materials (GR2Ms), 2024, C Journal of Carbon Research 10 (2), 30, https://doi.org/10.3390/c10020030

2. P. L. Yap,  Methods, instruments and techniques: Thermal analysis for batteries, fuel cells and supercapacitors, Book chapter https://doi.org/10.1016/B978-0-323-96022-9.00209-7

3. P L Yap, et al, International Interlaboratory Comparison (ILC) of Thermogravimetric Analysis (TGA) of Graphene Related 2D Materials (Analytical Chemistry, 2023, 95, 12, 5176–5186, https://doi.org/10.1021/acs.analchem.2c03575

4. P. Turner et al , International Interlaboratory Comparison of Raman Spectroscopic Measurements of CVD-grown Graphene, 2D materials, 2022, 9 035010, https://doi.org/10.1088/2053-1583/ac6cf3

5. D. Losic, F. Farivar, P. Lay Yap, T. T. Tung, Md J. Nine, New Insights on Flammability of Graphene Oxide Materials and Potential Safety Risks, Science of The Total Environment, 2022, 848, 157743, https://doi.org/10.1016/j.scitotenv.2022.157743

6. D. Losic, F. Farivar, P. Lay Yap, A. Karami, Accounting Graphene Fake Materials using Thermogravimetric Analysis (TGA) Approach, Analytical Chemistry, 2021,93 (34), 11859-11867 (Journal Cover) https://doi.org/10.1021/acs.analchem.1c02662

7. F. Farivar, P. Lay Yap, R. U. Karunagaran, D. Losic, Thermogravimetric Analysis (TGA) of Graphene Materials: Effect of Particle Size of Graphene, Graphene Oxide and Graphite on Thermal Parameters, C Journal of Carbon Research, 2021, 7(2), 41 https://doi.org/10.3390/c7020041

8. F. Farivar, P. Lay Yap, K. Hassan, T. Thanh Tung, D. N.H. Tran, A. J. Pollard, D. Losic, Unlocking thermogravimetric analysis (TGA) in the fight against “Fake graphene” materials, Carbon, 2021, 179, 505-513 https://doi.org/10.1016/j.carbon.2021.04.064