The electrochemical flow capacitor for grid-scale energy storage

 new technology from Drexel
An interdisciplinary team of researchers from Drexel University have reported the development of a new technology for grid-scale energy storage which could provide a fast, efficient method for storing energy on the electrical grid...
Rus На русском Eng In English

This new technology, dubbed the “electrochemical flow capacitor,” stores energy in the same way as a supercapacitor, but is much less costly to scale up for large, industrial applications. Results from the team’s most recent study were published in a special issue of Advanced Energy Materials ("The Electrochemical Flow Capacitor: A New Concept for Rapid Energy Storage and Recovery") focusing on next-generation batteries.

The electrochemical flow capacitor uses a flow cell architecture, similar to existing redox flow batteries for grid storage, consisting of an electrochemical cell connected to external electrolyte reservoirs. However, this technology is unique in that it uses a flowable slurry of capacitive particles suspended in a liquid electrolyte carrier fluid. Uncharged slurry is pumped through a flow cell, where energy is stored capacitively within the solid particles.The charged slurry can then be held in reservoirs until the energy is needed, at which time the entire process is reversed. By utilizing this capacitive slurry instead of conventional battery electroly tes, the Drexel team says that its new design can be operated in high power applications for hundreds of thousands of charge-discharge cycles, vital for industrial applications

 

flow capacitor

llustration by Kristy Jost, PhD student of Materials Science and Engineering.

“It is well known that conventional supercapacitors provide very high power output with minimal degradation in performance. However, they have always had fairly limited energy storage capacity”, said Dr. Yury Gogotsi, distinguished university professor and Trustee Chair of Materials Science and Engineering and director of the A.J. Drexel Nanotechnology Institute at Drexel University, one of the lead scientists on the project. “By incorporating the active material of supercapacitors into a fluid, we are able to address issues of capacity and scalability by adopting the system architecture from redox flow batteries”.

Dr. E. C. Kumbur, Director of the Electrochemical Energy Systems Laboratory at Drexel states: “Flow battery architecture is very attractive for grid-scale applications because it allows for scalable energy storage by decoupling the power and energy storage.” In flow battery systems, as well as the electrochemical flow capacitor, the energy storage capacity is determined by the size of the reservoirs which store the charged material. If a larger capacity is desired, the tanks can simply be scaled up in size. Similarly, the power output of the system is controlled by the size of the electrochemical cell, with larger cells producing more power.

“Slow response rate is a common problem for most energy storage systems. Incorporating the rapid charging and discharging ability of supercapacitors into this architecture is a major advantage to effectively store the fluctuating energy sources and deliver the energy rapidly as needed,” Kumbur said. “Electrical energy storage is the bottleneck for more widespread implementation of renewable energy sources like wind and solar,” said Dr. Volker Presser, Assistant Research Professor in the Department of Materials Science and Engineering at Drexel. “We believe that this new technology has important applications in that field. Moreover, these technologies can also be used to enhance the efficiency of existing power sources, and improve the stability of the grid.”

The team’s ongoing work is focused on developing new slurry compositions based on different carbon nanomaterials and electrolytes, as well as optimizing their flow capacitor design.

“We have observed very promising performance so far, but this is by no means the upper limit of this technology,” Gogotsi said. The team is also designing a small demonstration prototype to illustrate the fundamental operation of the system.  Materials Research Centre also participates in development of the pilot device with flow electrochemical capacitor.

Source: Drexel University

 

News from MRC.ORG.UA

Congratulations to Professor Yury Gogotsi who received prestigious Chineese Government Friendship Award, Beijing, Great Hall of the People, September 29, 2018

Yury Gogotsi recevide Friendship Award from Chinas GovernmentChina"s Government Friendship Award ceremony was held in Great Hall of the People, in Beijing on September 29, 2018, the award to the winners were presented by the Vice Premier of China Liu He. The People's Republic of China Government Friendship Award is China's highest award for foreign experts who have made outstanding contributions to the country's economic and social progress.

 
Spray-On Antennas Could Be the Tech Connector of the Future

Invisibly thin MXene antennas can be applied to a variety of substrates and perform better than antenna materials currently used in mobile devices.

Now, researchers at Drexel University have developed a method for creating nearly invisible antennas on almost any surface by literally spraying them on like paint. The antennas are made from a special two-dimensional metallic material called MXene. MXene powder can be dissolved in water to create a paint that is then airbrushed on. In tests, even a layer as thin as just 62 nanometers – thousands of times thinner than a sheet of paper – could communicate effectively. Performance maxed out at just 8 microns, a point at which the spray-on antennas worked just as well as those currently used in mobile devices and wireless routers.

 
Congratulations to professor Yury Gogotsi, professor Rodney S. Ruoff and professor Patrice Simon with being named by Clarivate Analythics among of the 17 most cited and influenced world-class scientists in 2018!

Professor Yury GogotsiThis designation celebrates researchers whose influence is comparable to that of Nobel Prize recipients, as attested by exceptionally high citation records within the Web of Science. 

 
15th YES Annual Meeting: “The Next Generation of Everything” September 13 – 15, 2018

alt

Yalta European Strategy (YES)  introduced nightcap events for the participants of the 15th YES Annual Meeting to wind down at the end of the first conference day and discuss interesting topics in an informal atmosphere. YES invited leading politicians, opinion makers and business leaders to present their views on modern trends that define the world and Ukraine. The nightcaps were organized in partnership with the U.S. Embassy in Ukraine and America House, International Renaissance Foundation, Ukrainian-Jewish Encounter and the Atlantic Council, Mejlis of the Crimean Tatar people and Ministry of Information Policy of Ukraine, Western NIS Enterprise Fund and Embassy of the Republic of Estonia.

 
2018 IEEE 8th International Conference on Nanomaterials: Applications & Properties, September 09-14, 2018

2018 IEEE International Conference on “Nanomaterials Applications & Properties”At the poster session of the conference Oleksiy Gogotsi presented two poster presentations on advanced nanomaterials for different applications, prepared with colleagues from Drexel University, USA, and Jilin University, China

 
NANO2DAY project participants Oleksiy Gogotsi and Veronika Zahorodna visited Polymer Institute SAS, Bratislava, Slovakia, July-September 2018

altNANO2DAY project participants from Materials Research Centre, Kiev, Ukraine, MRC director and project leader Oleksiy Gogotsi and ESR Veronika Zahorodna are working in Polymer Institute, Slovak Academy of Sciences, Bratislava, Slovakia under the project secondments plan.

 
NANO2DAY project: Professor Maria Omastova, Polymenr Institue Slovak Academy of Science, visited Materials Research Centre, Kiev, Ukraine, July-August 2018

Professor Maria Omastova, Polymer Institute SAV, Bratislava, Slovakia, and Oleksiy Gogotsi, director of Materials Research Centre, Kiev, Ukraine,  July 2018Professor Omastova was acquainted with the activities and research infrastructure of MRC project partner, she held several seminars on polymer composites and talked about the experience and developments of her institute. 

 
The 6th International Conference on Novel Functional Carbon Nanomaterials at the 8th Forum on New Materials (CIMTEC 2018) in Perugia, Italy, June 11-14

Фото Yury Gogotsi.The 6th International Conference “Novel Functional Carbon Nanomaterials”within the 8th Forum on New Materials at CIMTEC 2018 held in Perugia, Italy,  highlighted recent achievements and challenges in the synthesis, structural control and modeling at the meso- and nano-scales of the variety of low-dimensional carbon allotropes including nanodiamonds, diamond-like carbon, fullerenes, nanotubes, graphene and graphene-related structures, as well as high surface area carbon networks, which are promising for a range of emerging applications in energy conversion and storage, water purification, high-speed nanoelectronics, optoelectronics, photonics, quantum information processing, quantum computing, biosensing, drug delivery, medical imaging, thermal management, catalysis, lubrication, etc.

 
1st International Conference on MXenes at Jilin University, Changchun, China

MXene conference 2018The meeting is the first international conference focusing on MXene materals, which is to bring scientists in the two-dimensional materials or energy area to interact and discuss the advances and challenges in various fields.

 
Our Congratulations to Prof. Gogotsi with Receiving an Honorary Doctorate from Kyiv Polytechnic Institute KPIthe National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute"

 Prof. Yury Gogotsi received an honorary doctorate from the National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic InstituteOn May 14th, 2018, Prof. Yury Gogotsi received an honorary doctorate from the National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute (NTUU “KPI”), Kiev, Ukraine.

 
H2020-MSCA-RISE Nano2Day Kick-off project meeting, Academic Centre of University of Latvia, Riga, 10-11 May 2018

altH2020-MSCA-RISE project „Multifunctional polymer composites doped with novel 2D nanoparticles for advanced applications NANO2DAY” started on May 1, 2018. It is aimed to develop novel multifunctional composites with outstanding electronic and mechanical properties by incorporation of novel MXene nanosheets into polymer matrixes.

 
Materials Research Center team visited the Training " on "How to write a successful proposal in Horizon 2020" at National Aviation University of Ukraine" as part of the NAU Info Day

horizon2020 семінарOn February 14, 2018, Materials Research Center team visited the Training " on "How to write a successful proposal in Horizon 2020" at National Aviation University of Ukraine"  as part of the NAU Info Day.

 
Paper on Rheological Characteristics of 2D Titanium Carbide (MXene) Dispersions: A Guide for Processing MXenes

Processing guidelines for the fabrication of MXene films, coatings, and fibers have been established based on the rheological propertiesProcessing guidelines for the fabrication of MXene films, coatings, and fibers have been established based on the rheological properties.

 
Professor Yury Gogotsi will give a lecture on 2D materials MXenes in Stanford University

altProfessor Yury Gogotsi will give a lecture on 2D materials MXenes on MSE winter Colloquim in Materials Science and Engineering Department, Stanford University. 

 
MXene is one of the most sensitive gas sensors ever reported

MXene gas sensorsMXene is one of the most sensitive gas sensors ever reported that sniff out chemicals in the air to warn us about everything from fires to carbon monoxide to drunk drivers to explosive devices hidden in luggage have improved so much that they can even detect diseases on a person’s breath. Researchers from Drexel University and the Korea Advanced Institute of Science and Technology have made a discovery that could make our best “chemical noses” even more sensitive.