What is Holey Super Graphene?

Developed in Nanografi's high-tech laboratories, Holey Super Graphene, also known as holey graphene, is set to revolutionize advanced material technologies. The unique advantages provided by this new generation material will push the boundaries of technological applications and enable effective solutions.

Nanografi, which has one of the world's largest graphene mass production facilities, has developed a new and more efficient model of graphene in its high-tech laboratories. Developed in accordance with mass production and referred to as holey graphene in academic texts, the product, which Nanografi defines as Holey Super Graphene, will offer solutions to important problems of the industry, especially high technology, and accelerate the momentum of progress in high technology.

Capitalizing on its distinct perforated structure, "Holey Super Graphene" a feat accomplished first export success by Nanografi in October 2023, has been tailored to provide to the precise needs of high-tech enterprises. This remarkable breakthrough is ready to fundamentally transform the high-tech industry across a wide spectrum of sectors.

What is Holey Super Graphene?

Holey Super Graphene is defined as a special type of graphene structure with holes and pores inside. This material retains the properties of graphene while at the same time adding new capabilities. In addition to the known properties of graphene, it stands out with its superior properties such as ultra-high conductivity, high surface area and better electrochemical performance.

Figure 1. Structure of Holey Graphene

Synthesis of Holey Super Graphene

Holey Super Graphene (hG) is a specialized form of graphene characterized by intentional nanometer-sized or mesoscale holes, which confer unique electronic and chemical properties. Synthesis methods for hG range from high-precision techniques like nanoscopic electron beam drilling and nanolithography to scalable approaches that utilize graphene oxide (GO) or its reduced form (rGO) as starting materials. Techniques like liquid-phase oxidation, gaseous phase etching, and templated growth have been employed to create these deliberate defects.

Advantages, Properties & Applications of Holey Super Graphene

Holey Super Graphene’s enhanced properties provide advantages in a number of different application areas.

• Ultra-high conductivity (Up to 16,500 μS/cm),
• High surface area,
• Excellent electrochemical performance
• Pore size (>50 nm)

Advantages & Applications

Ultra-high conductivity provides more efficient operation of electronic devices, enabling high-speed data transmission. Furthermore, the high surface area offers more active sites in chemical reactions and molecular adsorption, which makes supercapacitors, catalysts and gas storage systems more effective. The electrochemical performance of Holey Super Graphene enables faster charging and discharging of energy storage devices and more sensitive and fast response of electrochemical sensors.

Thanks to the perforated graphene structure obtained, tracking the passage of DNA and sequencing it with high resolution has significant potential in many fields from genetic research to medical diagnostics, drug development and biotechnology to environmental detection. This material could be of great benefit in applications such as recognizing genetic diseases, developing personalized treatments and accelerating drug development processes. It can also serve as an important tool for biological research, environmental detection and food safety.

In summary, Holey Super Graphene stands out as a versatile material that can be used in a wide range of applications. Its high conductivity will benefit energy storage by providing fast charge-discharge processes and long life advantages in battery and supercapacitor technologies. It will also find use in many different fields, from membranes to electronic devices, fuel cells to gas sensors, water treatment systems to hydrogen storage and biological research.

Diverse Applications of Holey Super Graphene

Holey Super Graphene (hG) is a revolutionary material with a hollow structure and many advantageous properties, offering significant potential in a wide range of applications such as nanotechnology, energy storage, and environmental applications.

Electronics

Holey Super Graphene (HG) can be used in electronic devices in several different ways:

Supercapacitors: Holey Super Graphene (hG) is used as an active electrode material in energy storage systems. HG-based electrodes offer large surface areas and a connected network for active sites, allowing them to have high specific capacity. These properties allow holey super graphene-based supercapacitors to offer increased ion storage capacity and support fast charge-discharge processes.

Sensors: Holey graphene is used in various sensor applications such as gas sensors. Holey Super Graphene-based electrodes designed for specific molecular detection are used, especially in chemical or biological sensors, where the holes detect interactions at the molecular level.

Lithium-ion Batteries and Membranes: Holey Super Graphene-based membranes can also be used in membrane applications in lithium-ion batteries. These membranes allow lithium ions to move freely between the anode and cathode, leading to more efficient operation of the batteries and higher energy storage capacity. Holey Super Graphene membranes facilitate the intercalation (insertion into the cathode) and deintercalation (release into the anode) of lithium ions, contributing to longer battery life. Therefore, this material-based membranes play an important role in improving the performance of lithium-ion batteries.

Photonics and Optoelectronics: Holey Super Graphene's unique electronic structure and optical properties make it an interesting candidate for photonics and optoelectronics applications. It can be used in the development of photodetectors, light-emitting devices, and modulators. The combination of its electronic and optical characteristics opens up possibilities for high-performance optoelectronic devices with improved efficiency.

Energy Storage: Beyond the previously mentioned applications in energy storage (e.g., supercapacitors and lithium-ion batteries), Holey Super Graphene can also be explored in emerging energy storage technologies, such as advanced solid-state batteries and energy-dense capacitors. Its properties can contribute to improving the energy density, cycling stability, and overall performance of these energy storage systems.

Water Treatment

The atomic or nanoscale holes of Holey Super Graphene are used to regulate the passage of water and block the passage of unwanted particles. This makes water purification possible. In addition, by limiting the passage of salt molecules, it also helps convert salt water into fresh water.

Fuel Cells

Fuel cells are devices that convert chemical energy from fuels (e.g., hydrogen) into electrical energy through electrochemical reactions. Holey Super Graphene can be utilized as a catalyst support material in fuel cells. Its high surface area and electrical conductivity can enhance the performance and efficiency of fuel cells, making them more viable for clean energy generation in applications like transportation and stationary power generation.

Hydrogen Storage

The higher the surface area, the higher the hydrogen adsorption, and therefore materials with high surface area and chemically inert properties are considered promising candidates for hydrogen storage. In this case, Holey Super Graphene (hG) is considered an ideal material as it exhibits high surface area and high pore density.

Gas Sensors

Holey Super Graphene's high surface area and tunable properties make it suitable for gas sensing applications. When exposed to specific gases, changes in electrical conductivity or other properties of hG can be detected, allowing for the selective and sensitive measurement of gases. This can be valuable in environmental monitoring, industrial safety, and medical diagnostics.

Nanocomposite Materials

Holey Super Graphene can be incorporated into nanocomposite materials to enhance their mechanical, electrical, and thermal properties. The unique structure of hG, with its hollow pores, can be used to disperse and stabilize nanoparticles or other materials within a graphene matrix. This can result in the development of advanced nanocomposites with improved strength, conductivity, and thermal stability. These materials can find applications in aerospace, automotive, and construction industries, among others.

This new material, which exceeds the limits of traditional graphene, is becoming the key to high performance. In light of Nanografi's innovative approach in this field, the level of efficiency and effectiveness in production and R&D processes is expected to increase, while this development is expected to provide cumulative scientific and industrial progress.

Holey Super Graphene will set new standards and raise the bar in many sectors in the future thanks to its high conductivity, high surface area and unique electrochemical and mechanical advantages. Developed and produced in-house at Nanografi, Holey Super Graphene will combine sustainability and high performance, making it an ideal material for both industrial and academic applications.

To get more insight and detailed information, dive into this blog post.

References

Huang, J.-B., Patra, J., Lin, M.-H., Ger, M.-D., Liu, Y.-M., Pu, N.-W., Hsieh, C.-T., & Jehng, J.-M. (2020). A Holey Graphene Additive for Boosting Performance of Electric Double-Layer Supercapacitors. Polymers, 12(4), 765. https://doi.org/10.3390/polym12040765

Lokhande, A. C., Qattan, I. A., Lokhande, C. D., & Patole, S. P. (2020). Holey graphene: an emerging versatile material. Journal of Materials Chemistry A, 8(3), 918-977. https://doi.org/10.1039/C9TA10667G

Lin, J., Peng, Z., Liu, Y., Ruiz-Zepeda, F., Ye, R., Samuel, E. L. G., ... & Tour, J. M. (2014). Holey graphene frameworks for highly efficient capacitive energy storage. Nature Communications, 5, 5714. https://doi.org/10.1038/ncomms5554

Lin, Y., Plaza-Rivera, C. O., Hu, L., & Connell, J. W. (2022). Scalable Dry-Pressed Electrodes Based on Holey Graphene. Accounts of Chemical Research, 55(20), 3020–3031. https://doi.org/10.1021/acs.accounts.2c00457

Liu, Y., Zhang, L., Cheng, B., Hu, X., Yu, J. (2020). Holey Graphene for Electrochemical Energy Storage. ScienceDirect. Retrieved from https://www.sciencedirect.com/science/article/pii...

Nanografi Nano Technology. (n.d.). Holey Graphene: A Promising Graphene Derivative. Retrieved from https://nanografi.com/blog/holey-graphene-a-promising-graphene-derivative/