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Synthesis of two-dimensional transition metal carbides and carbonitrides by immersing select MAX phase powders in hydrofluoric acid, HF

The SEM image captured by Babak Anasori shows MXene particlesMXenes have potential uses in a broad range of energy and electronics applications, including lithium-ion batteries and supercapacitors. The materials' layered structure resembles that of graphene — hence the suffix ene — a two-dimensional sheet of carbon, but its chemistry is more complex and more versatile.

Researches report on the synthesis of two-dimensional transition metal carbides and carbonitrides by immersing select MAX phase powders in hydrofluoric acid, HF. The MAX phases represent a large (>60 members) family of ternary, layered, machinable transition metal carbides, nitrides, and carbonitrides. Has been present evidence for the exfoliation of the following MAX phases.

 

Investigation of Carbon Materials for Use as a Flowable Electrode in Electrochemical Flow Capacitors

Schematic of the operation of an EFC system. Slurries are charged in the flow cellNovel electrical energy storage concept, the electrochemical flow capacitor (EFC), holds much promise for grid-scale energy storage applications.

The EFC combines the principles behind the  operation of flow batteries and supercapacitors, and enables rapid charging/discharging and decoupled energy/power ratings. Electrical charge is stored in a flowable carbon slurry composed of low-cost and abundantly available carbon particles in pH-neutral, aqueous electrolyte.

 

MXene - New Family of 2-D Metal Carbides and Nitrides

Ti3AlC2 forming two OH-terminated MXene layersAn urgent challengecurrently faced by researchers and the public alike is the ability to identify the next generation of sustainable, cost-effective, and energy efficient materials for our everyday use. While searching for new materials for electrical energy storage, a team of Drexel University materials scientists has discovered a new family of two-dimensional compounds proposed to have unique properties that may lead to groundbreaking advances in energy storage technology.

In their paper, the research team recounts their ability to transform three dimensional titanium-aluminum carbide, a typical representative of a family of layered ternary carbides called MAX phases, into a two dimensional structure with greatly different properties. MAX phases, known as ductile and machineable ceramics, have been researched by Prof. Barsoum’s lab for more than a decade and dozens of layered carbides, nitrides and carbonitrides with a variety of properties have been synthesized. However, these ceramics have always been produced as 3-dimensional materials.

 

Pore Size Reduction Increases Energy Stored In Super Capacitors

Computational modeling of carbon supercapacitors
Yury Gogotsi of Drexel University with his co-workers felt the necessity of studying a potential supercapacitor material at the atomic level to analyze certain experimental results. A research team under the supervision of Oak Ridge National Laboratory’s (ORNL) computational physicist Vincent Meunier and computational chemists Jingsong Huang and Bobby Sumpter enabled the analysis at the atomic level.

When you're talking about nanomaterials, however, that eye is pretty much useless unless it's looking through an electron microscope or at a computer visualization. Yet the pits and ridges on a seemingly flat surface—so small they are invisible without such tools—can give the material astonishing abilities. The trick for researchers interested in taking advantage of these abilities lies in understanding and, eventually, predicting how the microscopic topography of a surface can translate into transformative technologies.

 

Supercapasitors: Big Energy Storage in Thin Films

Computational modeling of carbon supercapacitors

Energy storage devices called superapacitors can be recharged many more times than batteries, but the total amount of energy they can store is limited. This means that the devices are useful for providing intense bursts of power to supplement batteries but less so for applications that require steady power over a long period, such as running a laptop or an engine.

Now researchers at Drexel University in Philadelphia have demonstrated that it's possible to use techniques borrowed from the chip-making industry to make thin-film carbon ultracapacitors that store three times as much energy by volume as conventional ultracapacitor materials. While that is not as much as batteries, the thin-film ultracapacitors could operate without ever being replaced.

 

Materials for electrochemical capacitors

Electrochemical capacitors, also called supercapacitors, store energy using either ion adsorption (electrochemical double layer capacitors) or fast surface redox reactions (pseudo-capacitors). They can complement or replace batteries in electrical energy storage and harvesting applications, when high power delivery or uptake is needed. A notable improvement in performance has been achieved through recent advances in understanding charge storage mechanisms and the development of advanced nanostructured materials.

The discovery that ion desolvation occurs in pores smaller than the solvated ions has led to higher capacitance for electroche.

 



News from MRC.ORG.UA

Twenty Third Annual Conference - YUCOMAT 2022 Twelfth World Round Table Conference on Sintering - XII WRTCS 2022 Herceg Novi, August 29 – September 2, 2022

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Our collaborators and partners  presented our joint research at the Yucomat conference - at Symposium on Biomaterials and two collaborative posters at Conference Poster Session.

 
MRC team visited 2nd international MXene conference "MXenes: Addressing Global Challenges with Innovation"at Drexel University, USA on Aug. 1-3, 2022

second MXene COnference 2022, Drexel University, USA

MRC team members Dr. Oleksiy Gogotsi, Veronika Zahorodna, Dr. Iryna Roslyk visited MXene Confrence 2022.  This 2nd international MXene conference at Drexel University, August 1-3, 2022, put major MXene discoveries, including their record-breaking electrical conductivity, electromagnetic interference shielding capability, electrochemical capacitance, light-to-heat conversion, and other properties, into perspective.

 
Launching HORIZON-MSCA-2021-SE-01 MX-MAP Project: Towards MXenes biomedical applications by high-dimensional immune MAPping

MX-MAP project Meeting during the MXene international conference held in Drexel University on Aug. 3,  2022, and discussing the roadmap for launching MX-MAP research project on MXenes for medical applications.

 
H2020-MSCA-RISE NANO2DAY research project, last updates

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Researchers from University of Latvia and Materials Research Center, Ukraine are visiting Drexel University due to Horizon-2020-MSCA-RISE NANO2DAY research project.

 
MXene-Assisted Ablation of Cells with a Pulsed Near-Infrared Laser

Development of tailored MXene PTT treatment targeting tumor cells. We demonstrate both low toxicity and good biocompatibility of this MXene in vitro, as well as a favorable safety profile based on the experiments in vivo.Presenting our recent collaborative research paper on  MXene use for PPT anticancer therapy, the biocompatibility of MXenes in vitro and in vivo studies:

Sergiy Kyrylenko, Oleksiy Gogotsi, Ivan Baginskiy, Vitalii Balitskyi, Veronika Zahorodna, Yevheniia Husak, Ilya Yanko, Mykolay Pernakov, Anton Roshchupkin, Mykola Lyndin, Bernhard B. Singer, Volodymyr Buranych, Alexander Pogrebnjak, Oksana Sulaieva, Oleksandr Solodovnyk, Yury Gogotsi, Maksym Pogorielov, MXene-Assisted Ablation of Cells with a Pulsed Near-Infrared Laser. ACS Appl. Mater. Interfaces 2022, 14, 25, 28683–28696, https://doi.org/10.1021/acsami.2c08678

 
MXenes—A New Class of Two-Dimensional Materials: Structure, Properties and Potential Applications

Presenting our collaborative paper on recen advances in MXene research and their potential applications:

Pogorielov M, Smyrnova K, Kyrylenko S, Gogotsi O, Zahorodna V, Pogrebnjak A. MXenes—A New Class of Two-Dimensional Materials: Structure, Properties and Potential Applications. Nanomaterials. 2021; 11(12):3412. https://doi.org/10.3390/nano11123412

 
MXene nanoflakes decorating ZnO tetrapods for enhanced performance of skin-attachable stretchable enzymatic electrochemical glucose sensor

Presenting our joint research paper supported by CANBIOSE research project: and published in Biosensors and Bioelectronics: MXene nanoflakes decorating ZnO tetrapods for enhanced performance of skin-attachable stretchable enzymatic electrochemical glucose sensor

 
If you want to help and support the purchase of aid consignments, shipping cost to Ukraine and delivery within Ukraine to the places in nee, please donate

Our volunteersBig thanks to all our friends, partners, volunteers for help and their tireless work! We continue to help our defenders and deliver military equipment, humanitarian aid, tactical medicine and special medical supplies to units of Ukrainian Army, territorial defense and hospitals on the front line!

 
Delivering help to Ukraine from the USA, Europe, and the rest of the world!

3.jpg - 197.81 KbOur organization in Kyiv, Materials Research Center, is well aware of the needs in Ukraine now. Together with our partners, fellow Ukrainian scientists, we have organized a warehouse in Lviv, where we collect cargos and distribute them throughout Ukraine, with detailed reports confirming the delivery to the final destination, including photos of the transfer. We have transportation that can pick cargo in Poland and deliver it through a green corridor for humanitarian cargos at the Polish-Ukrainian border. 
We are ready to respond promptly, as required by the situation in Ukraine. If there are individuals, foundations or volunteer organizations willing to send help to Ukraine from Europe or the United States, we are ready to accept it in our warehouses, make collection or individual parties according to your request and pass them on to those in need. All humanitarian aid, first aid, and protective gear will be delivered to the final destination.
Please contact Dr. Oleksiy Gogotsi, MRC Director: Tel / Viber / WhatsApp / Telegram / Signal: + 380 63 233 2443, Cell phone in the USA: +1 808 203 8092, e-mail: helpukraine@mrc.org.ua
Being currently on a business trip in Philadelphia, the United States, we can meet with you in person, if needed.

 
MRC Ukraine Foundation. Providing of military first aid medicine for the Special Operations Forces of the Armed Forces of Ukraine

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MRC Ukraine Foundation. Providing of military first aid medicine for the Special Operations Forces of the Armed Forces of Ukraine via volunteers. Specialized military first aid medical supplies were provided by the Special Forces Foundation, Green Berets Humanitarian Fund, USA

 
Delivering military first aid medicine from the Special Forces Foundation Green Beret Humanitarian Fund (GBHF) from the USA to territorial defences, army unit and 2 hospitals

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Delivering military first aid medicine from the Special Forces Foundation Green Beret Humanitarian Fund (GBHF) from the USA via the Kernel Volunteer Group for the Territorial Defense of Kyiv, Poltava, Vinnytsia, Voznesensk, as well as some military unit in Kyiv and Ternopil. Also part of medical supplies is transferred to hospitals in Krasnopillia in Sumy region and Voznesensk in Mykolaiv region

 

 
MRC Ukraine Foundation. Transfer of military first aid medicine at our hub in Lviv

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MRC Ukraine Foundation. Transfer of military first aid medicine at our hub in Lviv from the American Green Beret Humanitarian Fund for some military units.

 
BSU and LU parthers secondment visits to MRC an seminar discussion of ongoing research works under the NANO2DAY project at Materials Research Center, February 2022

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During the secondment visits of project partners from BSU and LU to MRC research works were performed and a seminar discussion of ongoing research works and obtained results was held under the NANO2DAY project.

 
Registration is now open for the upcoming MXene Certificate Course, February 7-11, 2022 from Professor Yury Gogotsi and his team, Drexel University, USA

altRegistration is now open for the upcoming MXene Certificate Course, February 7-11, 2022! This virtual certificate course will teach best practices for the synthesis (2 days), characterization (2 days), and electrochemical measurements of MXenes with a new lecture in the biomedical applications of MXenes (you may choose electrochemical measurements OR biomedical applications - 1 day).

 
Visiting resracher S. Stankevich performed secondment to MRC due to NANO2DAY project

altStanislav Stankevich, research assistant from Latvias University, Riga, Latvia, performed secondment visit to Materials Research Center, Kyiv, Ukraine, due to the MSCA RISE research project NANO2DAY working on project tasks related to MXene based composites. Dates of performed secondment visit November 17-December 16, 2021.