New Energy: Science and Technology Articles
Rus На русском Eng In English


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

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.

 
Nature Conference on Materials for Energy 2016

altProf.Yury Gogotsi at the Nature Journals’ Materials for Energy conference gave a talk on Synthesis, Properties And Energy Storage Applications of Two-Dimensional Carbides (Mxenes) in Wuhan University of Technology Conference Centre, Wuhan, China

 
Congratulations to Prof. Gogotsi on winning the 2016 Nano Energy Award

prof. Yury Gogotsi, Drexel UniversityThe award will be presented to prof. Yury Gogotsi at the Nanoenergy and Nanosystems 2016 conference, which will be held in Beijing between 13-15 July 2016.

 
Congratulations to professor Yury Gogotsi for being named a Thomson Reuters 2015 Highly Cited Researcher!

altProfessor Yury Gogotsi have been listed in the 2015 World’s Most Influential Scientific Minds. 

 
Prof. Yury Gogotsi has been admitted as Fellow of the Royal Society of Chemistry (FRSC)

Royal Society of ChemistryProf. Yury Gogotsi has been admitted as Fellow of the Royal Society of Chemistry (FRSC) on December 11, 2015 for his outstanding contribution to chemistry. 

 
Prof. Yury Gogotsi was awarded the Lee Hsun Award Lecture

Prof. Yury Gogotsi was awarded the Lee Hsun Award Lecture at the Institute of Metal Research (IMR) of the Chinese Academy of Sciences on Nov. 5.Prof. Yury Gogotsi was awarded the Lee Hsun Award Lecture at the Institute of Metal Research (IMR) of the Chinese Academy of Sciences on November 5, 2015.

 
Yury Gogotsi and Patrice Simon were announced as the laureates of RUSNANOPRIZE 2015 at the Open Innovations Forum in Moscow, October 28, 2015

Лауреаты премии RUSNANOPRIZE 2015 проф. Юрий Гогоци (Университет Дрекселя, США) и проф. Патрис Симон (Университет Тулузы им. Поля Сабатье, Франция), 28 октября 2015 г.

Winners of the international award RUSNANOPRIZE 2015 became Yury Gogotsi,  professor  of Drexel University (USA), Director of the Institute of nanomaterials Drexel University (USA), and professor of the University Paul Sabatier (France), Patrice Simon for the fundamental studies and development of carbon nanomaterials for electrochemical supercapacitors.