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

Scanning electron micrograph of an exfoliated particle with the size of about 10 micrometers. MXenesheets can be separated by sonication. SEM – B. Anasori, color – P. GogotsiMXene- New Family of 2-D Metal Carbides and Nitrides

PHILADELPHIA (August 22, 2011) An 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.

The research team led by Dr. Yury Gogotsi, Distinguished University Professor of Materials Science and Engineering and Director of the A.J. Drexel Nanotechnology Institute and Dr. Michel Barsoum, Grosvenor and Distinguished Professor of Materials Science and Engineering, has recently published a paper titled "Two-Dimensional Nanocrystals Produced by Exfoliation of Ti3AlC2," appearing in the highly prestigious journalAdvanced Materials. 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.

Schematic of the exfoliated Ti3AlC2 forming two OH-terminated MXene layers Model – M. KurtogluThe Drexel researchers placed titanium-aluminum carbide (Ti3AlC2) powders in hydrofluoric acid at room temperature to selectively remove the aluminum. The result of this chemical process, referred to as exfoliation, essentially spreads-out the layered carbide material and yields two-dimensional Ti3C2nanosheets, which have since been coined MXene, as a kin to graphene. Most notable is that the exfoliated material shows many features of graphene. For example, it can roll into nanotube-like scrolls, some with diameters of less than 40 nanometers (1000 times thinner than a human hair), having the potential for a broad range of applications, ranging from energy storage devices to biomedical applications and composites.

The scientists present their case using an array of experimental techniques and first principles calculations. High-resolution transmission electron microscopy, performed in collaboration with researchers from Sweden, has demonstrated presence of single, double and multilayer sheets with the lateral dimension of several micrometers and thicknesses in the nanometer range. The calculations predict large elastic moduli and an electronic structure that can be tuned by changing the surface chemistry of these sheets.

“Two-dimensional free-standing crystals, such as graphene, boron nitride and metal chalcogenides (for example, molybdenum disulfide), can differ strikingly in properties from their three-dimensional counterparts. Currently, however, there are relatively few such atomically layered materials.” said Michael Naguib, a doctoral candidate and first author of the article.

“Since Ti3AlC2 is a member of the MAX phase family, that to date number over 60, the importance of this study lies far beyond simply the formation of Ti3C2nanosheets. We are not talking about one composition here, but a very large family indeed, thus opening tremendous opportunities in synthesis and application of 2-D materials. This work provides a conceptual leap forward that should lead to a breakthrough in the development of two-dimensional materials.” Gogotsi said.

This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 – Batteries for Advanced Transportation Technologies (BATT) Program (http://batt.lbl.gov).

Reference:Naguib, M.; Kurtoglu, M.; Presser, V.; Lu, J.; Niu, J.; Heon, M.; Hultman, L.; Gogotsi, Y.; Barsoum, M. W., Two Dimensional Nanocrystals Produced by Exfoliation of Ti3AlC2, Advanced Materials, 2011, http://dx.doi.org/10.1002/adma.201102306

Source: http://nano.materials.drexel.edu/

Related Items:

Pore Size Reduction Increases Energy Stored In Super Capacitors

Supercapasitors: Big Energy Storage in Thin Films

Supercapacitors Lead the Way As Sustainable Energy Source

True Performance Metrics in Electrochemical Energy Storage. Science

The Drexel researchers placed titanium-aluminum carbide (Ti3AlC2) powders in hydrofluoric acid

 

News from MRC.ORG.UA

Professor Yury Gogotsi was speaking about nanotechnology in energy storage at the World Science Festival 2017

Professor Yury Gogotsi at World Science Festival 2017Join world-class nanoscientists and environmental leaders to explore how the capacity to harness molecules and atoms is accelerating spectacular inventions — including light-weight “wonder materials,” vital energy-storage technologies, and new sources of renewable energy — which promise to redefine the very future of energy.

 
MXenes are at the forefront of 2D materials research

alt

Research of 2D MXenes is prominently featured in an article in Chemical & Engineering News - bulletin of the American Chemical Society that goes in hard copy to more than 150,000 subscribers. No doubt, MXenes are at the forefront of 2D materials research.

 
IDEATION Seminars: A New Platform for Innovation Management, Promotion, Licensing, Technology Transfer and Commercialization, June 7 at 14:30, KPI, Kyiv

altSpeakers:  Victor Korsun and Douglas Graham

 
Nano Iguana became a 1st place winner at 2017 MRS Science as Art Competition

Entry Nano Iguana became a 1st place winner at Science as Art Competition 2017: Nano-anatase (TiO2) crystals decorating graphene-like carbon, fabricated by oxidizing 2d Ti3C2 MXene powder, presented by A. J. Drexel Nanotechnology Institute and Department of Materials Science  and Engineering, Drexel University, USAResearch team from Drexel University lead by professor Yury Gogotsi produced an award-wining entry and became the 1st place winner in Science as Art competition at 2017 MRS Spring meeting in Phoenix.

 
1st Africa Energy Materials conference, 28 – 31 March 2017, Pretoria, South Africa

1st Africa Energy Materials conference On the first day of the conference, on March 28, the conference participants had an opportunity to attend a plenary lecture "Two-Dimensional Materials for High Rate and High-energy Density Storage" by invited plenary speaker professor Yury Gogotsi, Distinguished University Professor and Trustee Chair of Materials Science and Engineering at Drexel University, and Director of the A.J. Drexel Nanomaterials Institute 

 
Workshop “Nanomaterials – based innovative engineering solution to ensure sustainable safeguard to indoor air “ NANOGUARD2AR 27-28 February, Lisbon, Portugal

altThe goal of the workshop is to attract the most recognized academic experts in the field of Innovative Nanomaterials for Environmental Application to share their knowledge and expertise on nanomaterials, nanoengineering and green building concepts.

 
MATERIAL WITNESSES — RESEARCHERS AROUND THE WORLD ARE DELVING INTO DREXEL’S 2D MXENE

Researchers from the A.J. Drexel Nanomaterials Institute have been studying MXene for nearly half a decade. (L-R): Olekisy Gogotsi (Director of Materials Research Center, Ukraine), Gabriel Scull, Babak Anasori, Mohamed Alhabeb, Yury Gogotsi.

More than twenty 2D carbides, nitrides and carbonitrides of transition metals (MXenes) have been synthesized and studied, and dozens more predicted to exist. Highly electrically conductive MXenes show promise in electrical energy storage, electromagnetic interference shielding, electrocatalysis, plasmonics and other applications.

 
Prof. Gogotsi has been included in the list of ISI Highly Cited researchers for the 3rd year in the row

altProf. Gogotsi has been named among Highly Cited Researchers 2016, representing worlds most influential scientific minds

 
Appointment ceremony of Honorary professorship for prof. Yury Gogotsi, Jilin University, Changchun, China on October 20, 2016

Honorary professor of Jilin University Yury Gogotsi  and Li Yuanyuan, President of Jilin University, academician of the Chinese Academy of Engineering

The official appointment ceremony of Honorary professorship for Dr. Yury Gogotsi took place in a ceremonial atmosphere at Jilin University, Changchun, Jilin Province, China on October 20, 2016.

 
12th IUPAC International Conference on Novel Materials and their Synthesis (NMS-XII)

12th IUPAC International Conference on Novel Materials and their Synthesis (NMS-XII)12th IUPAC International Conference on Novel Materials and their Synthesis (NMS-XII), is held during 14-19 October, 2016 at Hunan Agriculture University together with Nanjing Tech University, Fudan University and University of Technology, Sydney.

 
Cleaning up electromagnetic pollution by containing the emissions with a thin coating of a nanomaterial called MXene

MXene is a nanomaterial that is both thin and light, but also has the unique ability to block and absorb electromagnetic radiation, which makes it the perfect for use as shielding in electronics devices.

 According to the authors, when electromagnetic waves come in contact with MXene, some are immediately reflected from its surface, while others pass through the surface but they lose energy amidst the material’s atomically thin layers.

 
Beijing University of Chemical Technology awarded prof. Yury Gogotsi, Drexel University (USA) the title of Honorary Professor

Honorary Professor appointment ceremony at the Beijing University of Chemical TechnologyBeijing University of Chemical Technology have decided to award prof. Yury Gogotsi, Drexel University (USA) the title of Honorary Professor based on his distinguished academic accomplishments. 

 
Prof. Yury Gogotsi became the winner of 2016 Nano Energy Award!

prof. Yury Gogotsi, Drexel UniversityNano Energy Award was presented to prof. Yury Gogotsi at 2016 Nanoenergy and Nanosystems Conference, which was held in Beijing on 13-15 July 2016.

 
Professor Yury Gogotsi, director of Drexel Nanomaterials Institute, Drexel University, USA, and director of Materials Research Centre Oleksiy Gogotsi visited Jilin University in Changchun, China

meeting at Jilin UniversityProfessor Yury Gogotsi, director of Drexel Nanomaterials Institute, Drexel University, USA, and director of Materials Research Centre Oleksiy Gogotsi visited Jilin University in Changchun, China, to meet research partners and discuss work questions and joint cooperation.

 
Yury Gogotsi gave a seminar lecture on Two-Dimensional Carbides and Nitrides (MXenes) and Their Applications in Energy Storage, Jilin University, China

Director of Materials Research Centre Oleksiy Gogotsi visited interesting seminar lecture of Prof. Yury Gogotsi on MXenes for the students of Jilin University.

June 16, 2016 prof. Yury Gogotsi gave a seminar lecture on Two-Dimensional Carbides and Nitrides (MXenes) and Their Applications in Energy Storage for the sudents and researchers of Jilin University, Changchun, China.