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Electrochemical measurements can distinguish between different types of energy storage materials and their underlying mechanisms.
Batteries keep our devices working throughout the day — that is, they have a high energy density—but they can take hours to recharge when they run down. For rapid power delivery and recharging (i.e., high power density), electrochemical capacitors known as supercapacitors are used. One such application is regenerative braking, used to recover power in cars and electric mass transit vehicles that would otherwise lose braking energy as heat. However, supercapacitors have low energy density. Batteries and supercapacitors both rely on electrochemical processes, although separate electrochemical mechanisms determine their relative energy and power density.
During the past 5 to 7 years, the energy storage field has witnessed a dramatic expansion in research directed at materials that might combine the high energy density of batteries with the long cycle life and short charging times of supercapacitors. However, the blurring of these two electrochemical approaches can cause confusion and may lead to unwarranted claims unless careful attention is paid to fun-damental performance characteristics.
The prospect of developing materials with the energy density of batteries and the power density and cycle life of supercapacitors is an exciting direction that has yet to be realized. Whether to approach these goals by increasing the power density of battery materials or increasing the energy density of supercapacitors is one of the enticing features of the field. However, there needs to be clarity in the terminology used in combination with appropriate measurements and analyses. Proper evalua-tion of new materials and their charge storage mechanisms will facilitate progress in this important field of electrical energy storage.
Patrice Simon,Yury Gogotsi, Bruce Dunn "Where Do Batteries End and Supercapacitors Begin?"
SCIENCE 343, 1210 (2014); DOI: 10.1126/science.1249625
Source: www.sciencemag.org
Highlights
We are excited to share that our Carbon-Ukraine (Y-Carbon LLC) company participated in the I2DM Summit and Expo 2025 at Khalifa University in Abu-Dhabi! Huge thanks to Research & Innovation Center for Graphene and 2D Materials (RIC2D) for hosting such a high-level event.It was an incredible opportunity to meet brilliant researchers and innovators working on the next generation of 2D materials. The insights and energy from the summit will definitely drive new ideas in our own development.
Carbon-Ukraine team had the unique opportunity to visit XPANCEO - a Dubai-based deep tech startup company that is developing the first smart contact lenses with AR vision and health monitoring features, working on truly cutting-edge developments.
Our Carbon-Ukraine team (Y-Carbon LLC) are thrilled to start a new RIC2D project MX-Innovation in collaboration with Drexel University Yury Gogotsi and Khalifa University! Amazing lab tours to project collaborators from Khalifa University, great discussions, strong networking, and a wonderful platform for future collaboration.
MXenes potential applications include sensors, wound healing materials, and drug delivery systems. A recent study explored how different synthesis methods affect the safety and performance of MXenes. By comparing etching conditions and intercalation strategies, researchers discovered that fine-tuning the surface chemistry of MXenes plays a crucial role in improving biocompatibility. These results provide practical guidelines for developing safer MXenes and bring the field one step closer to real biomedical applications.
An excellent review highlighting how MXene-based sensors can help tackle one of today’s pressing environmental challenges — heavy metal contamination. Excited to see such impactful work moving the field of environmental monitoring and sensor technology forward!
Carbon-Ukraine team was truly delighted to take part in the kickoff meeting of the ATHENA Project (Advanced Digital Engineering Methods to Design MXene-based Nanocomposites for Electro-Magnetic Interference Shielding in Space), supported by NATO through the Science for Peace and Security Programme.
Exellent news, our joint patent application with Drexel University on highly porous MAX phase precursor for MXene synthesis published. Congratulations and thanks to all team involved!
Our team was very delighted to take part in International Symposium "The MXene Frontier: Transformative Nanomaterials Shaping the Future" – the largest MXene event in Europe this year! 
Last Call! Have you submitted your abstract for IEEE NAP-2025 yet? Join us at the International Symposium on "The MXene Frontier: Transformative Nanomaterials Shaping the Future" – the largest MXene-focused conference in Europe this year! Final Submission Deadline: May 15, 2025. Don’t miss this exclusive opportunity to showcase your research and engage with world leaders in the MXene field!
We are excited to announce the publication of latest review article on MXenes in Healthcare. This comprehensive review explores the groundbreaking role of MXenes—an emerging class of 2D materials—in revolutionizing the fields of medical diagnostics and therapeutics. Read the full article here: https://doi.org/10.1039/D4NR04853A.
Congratulations and thank you to our collaborators from TU Wien and CEST for very interesting work and making it published! In this work, an upscalable electrochemical MXene synthesis is presented. Yields of up to 60% electrochemical MXene (EC-MXene) with no byproducts from a single exfoliation cycle are achieved.
Congratulations to all collaborators with this interesting joint work!