The 224th ECS Meeting in San Francisco, California | October 27 – November 1, 2013

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The 224th ECS Meeting  in San Francisco, California | October 27 – November 1, 2013

The 224th Electrochemical Society ECS Meeting was held in the heart of San Francisco, at the meeting headquarters hotel, the Hilton San Francisco (333 O’Farrell Street, San Francisco, CA 94102).

ECS bridges the gaps among academia, research, and engineering—bringing together scientists from around the world for the exchange of technical information. This unique blend provides an unparalleled forum for the integration of these areas of science and technology.

This major international conference at the Hilton San Francisco included more than 50 topical symposia consisting of over 2,800 technical presentations, and feature the third international ECS Electrochemical Energy Summit (E2S), which is fast becoming a tradition at ECS meetings. 2S and ECS Short Courses help launch the meeting on Sunday, October 27.

Two days of special events were devoted to E2S, with a featured symposium that explored the energy– water nexus, the intersection of two critical resource issues. Events on Sunday included an afternoon program with three invited speakers, all experts in energy issues, along with a dynamic Energy Research Group Showcase, a Poster Session, and a reception. E2S events on Monday were devoted to the Energy–Water Nexus Symposium (A3), and The ECS Lecture. Also at the conference was held Technical Exhibit and General Society and Poster Sessions.

On Monday, October 28, graduate research assistant from Nanomaterials group of Drexel University, Kelsey B. Hatzell, have presented at Poster Session presentation on Methods for Enhancing the Flowable Electrode Capacitance in the Electrochemical Flow Capacitor, resulting by common work of Drexel research team - Majid Beidaghi, Muhammed Boota, Christopher R Dennison, Emin Caglan Kumbur and professor Yury Gogotsi.

Flowable Electrode Capacitance in the Electrochemical Flow Capacitor poster

Methods for Enhancing the Flowable Electrode Capacitance in the Electrochemical Flow Capacitor

K.B. Hatzell1, M. Beidaghi1, M. Boota1,2, C.R.Dennison1,2, E.C. Kumbur2, Y. Gogotsi2

1 A.J. Drexel Nanotechnology Institute, Department of Material Science and Engineering
2 Electrochemical Energy Systems Laboratory, Department of Mechanical Engineering and Mechanics Drexel University, Philadelphia, PA 19104
Abstract
Grid energy storage has emerged as one of the key challenges limiting grid resiliency and impeding the full integration of intermittent renewable energy technologies. A novel technology that can address this issue is the electrochemical flow capacitor (EFC). The primary difference between traditional supercapacitors and the EFC is that the EFC utilizes a flowable electrode for capacitive energy storage. The electrostatic nature of this charge storage mechanism allows for fast charging and discharging, which allows the EFC to be tailored to specific grid applications such as voltage and frequency regulation where short response times are needed.
Researchers have  investigated the effects of pore size distribution and ammonization of the carbon surface as possible methods to increase the capacitance of the active material in the flowable electrode.

 The 224th ECS Meeting in San Francisco, October 2013

K.B. Hatzell, at the Poster session presents common work on Methods for Enhancing the Flowable Electrode Capacitance in the Electrochemical Flow Capacitor

At the photo: Carlos Perez, Cristy Jost, Kelsey Hatzell, researchers from Drexel Nanomaterials Group, Drexel University

On Wednesday, October 30, 2013  Kelsey B. Hatzell, graduate research assistant from Nanomaterials group, Drexel University, made a report on High Electrosorption Capacity Electrodes for Capacitive Deionization at the Energy–Water Nexus Symposium (A3) of ECS Electrochemical Energy Summit, at 224th ECS Meeting.

High Electrosorption Capacity Electrodes for Capacitive Deionization

Kelsey B. Hatzell1, Etsuro Iwama2, Barbara Daffos2, Pierre-Louis Taberna2, Theo Tzedakis2, Alexei Gogotsi3 , Patrice Simon2, Yury Gogotsi1

1 A.J. Drexel Nanotechnology Institute, Materials Science and Engineering Department, Drexel University, Philadelphia, PA
2 Université Paul Sabatier, CIRIMAT UMR CNRS 5085, 118 route de Narbonne, 31062 Toulouse, France
3 Materials Research Centre, 03680 Kiev, Ukraine

Abstract

In water stressed regions across the globe, the rate of abstraction from deep aquifers often exceeds the rate of recharge. This leads to water shortages that are sometimes irreversible. In order to address these water shortages, researchers are looking to the most abundant of source water present on earth, seawater. However, to transform seawater into clean drinking water requires a range of energy intensive processes. Such processes include Reverse Osmosis, UV disinfection and Thermal Distillation. The most promising of these technologies is Reverse Osmosis, which can achieve 1.8 kWh/m3 in current commercial plants [1]. Nevertheless, this technology is fundamentally hindered by membrane fouling and slow water transport [2]. Thus, there has been a movement toward technologies that do not use membranes, and toward technologies that remove the minority component (salt) rather than the majority component (water) [3].

Figure  1.  (a)  Cyclic  voltammetry  performance  of  spherical  activated  carbon  based  electrodes  in  different  NaCl solutions at 2 mV s-1. (b) Rate performance of CDI  electrodes in different NaCl concentrated solutions.

Capacitive Deionization (CDI) is the process of removing ions from brackish/seawater by applying a potential between two electrodes, adsorbing ion on the surface, and producing clean water. Carbon materials are favorable as electrode materials in CDI systems because they exhibit high electric conductivity (~100 S m-1), specific surface area (up to 2000 m2 g-1), and high electrochemical stability. Herein, we report the use of spherical activated carbon beads (BET SSA 1219 m2 g-1) as the active material for electrodes for a capacitive deionization system. In a 0.15 M solution of NaCl at 10 mV s-1 the electrodes demonstrate a capacitance of 58 F/g which is on par with recently reported electrode capacitances. These results indicate that with further optimization, the spherical geometry of the particles may yield enhanced electrosorption capacity for CDI.

References: 
1.  Elimelech, M.; Phillip, W.A. The Future of seawater desalination:  Energy,  technology,  and  the environment.  Science 2011, 333-712-717. 
2.  Wang,  Evelyn  and  Karnik,  Rohit.  Graphene  Cleans up water. Nature Nanotechnology, 2012.
3.  Porada, S., Weinstein, L., Dash, R., Van Der Wal, A., Bryjak, M., Gogotsi, Y., & Biesheuvel, P. M. Water desalination using capacitive deionization with microporous  carbon  electrodes. ACS  Applied Materials & Interfaces, 4(3), 1194-1199, 2012.

Source: www.ecs.confex.com

 

News from MRC.ORG.UA

ICEnSM 2017. 2017 International Conference on Energy Storage Materials, Shenzhen, China, November 18-21, 2017

The First International Conference on Energy Storage Materials Professor Yury Gogotsi from Drexel University, USA, has won the 2017 Energy Storage Materials Award, which is awarded by the journal Energy Storage Materials. The Award will be presented to Professor Gogotsi at the ICEnSM 2017 (2017 International Conference on Energy Storage Materials), which will be held in Shenzhen, China, on Nov. 18-21, 2017.

 
Congratulations to professor Yury Gogotsi for being named 2017 Highly Cited Researcher in two categories!

altHis research ranks among the top 1% most cited works in his field and during its year of publication, earning the mark of exceptional impact. This year is the first time Yury Gogotsi made this list in two categories - Materials Science and Chemistry.

 
Nanodiamonds Can Prevent Lithium Battery Fires

Nanodiamonds in the electrolyte solution of lithium ion batteries prevent the formation of dendrites that cause runaway heat-up resulting in fires. Source: Drexel University and Tsinghua UniversityScientists researching battery-related fires and explosions, such as the incidents that got Samsung Galaxy Note 7s banned from airline flights last year, took the first step toward preventing the fires when they traced the source of the runaway heat buildup to small dendrites that form between the anode and cathode. Now a materials specialist at Drexel University (Philadelphia) has proposed a low-cost, easy way to prevent the dendrites from forming.

 
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Receiving a Changbai Mountain Friendship Award from the vice-governor of Jilin Province at the National Day foreign experts reception.Professor Yury Gogotsi from Drexel University, USA, received the 2017 Changbai Mountain Friendship Award from the vice-governor of Jilin Province at the National Day foreign experts reception.

 
Congarstulations to professor Yury Gogotsi from Drexel University, USA, who has won the 2017 Energy Storage Materials Award

yury gogotsiCongarstulations to professor Yury Gogotsi from Drexel University, USA, who has won the 2017 Energy Storage Materials Award,and is awarded by Energy Storage Materials journal.

 
Partial breaking of the Coulombic ordering of ionic liquids confined in carbon nanopores

An international team of researchers, including Drexel's Yury Gogotsi, PhD, observed that ions will forgo their typical alternating charge ordering when they are forced to jam into a small, sub-nanometer-sized, space — a behavior modification not unlike people relinquishing personal space in order to pack into a crowded subway car. The discovery could lead to safer energy storage devices and better water filtration membranes.In their most recent paper in Nature Materials researcher from Drexel University led by prof. Yury Gogotsi showed that Coulombic ordering reduces when the pores can accommodate only a single layer of ions. The non-Coulombic ordering is further enhanced in the presence of an applied electric potential. 

 
Researcers from Drexel University have developed a recipe that can turn electrolyte solution into a safeguard against the chemical process that leads to battery-related disasters

Recipe for Safer Batteries — Just Add DiamondsResearchers described a process by which nanodiamonds — tiny diamond particles 10,000 times smaller than the diameter of a hair — curtail the electrochemical deposition, called plating, that can lead to hazardous short-circuiting of lithium ion batteries.

 
Triangle Talks with Yury Gogotsi

alt

Yury Gogotsi is a researcher in the Drexel University Nanomaterials Group. He and his colleagues discovered a series of novel materials known as MXenes. 

 
Yury Gogotsi is the most influential scientist of modern Ukraine

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Deputy Directors of IPMS NAS professors Dr. Ragulya, Dr. Baglyuk, Mr. Zavorotnyi, Honorary Professor of IPMS NASU Yury Gogotsi,  Scientific Secretary Dr. Kartuzov and Dr. Firstov Professor Yury Gogotsi , Drexel University, USA,  received an Honorary Doctorate from Frantsevich Institute for Problems of Materials Science, National Academy of Science of Ukraine.

 
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MXenes are at the forefront of 2D materials research

alt

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

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