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AABC Europe 2016
25-28 January 2016
Mainz, Germany



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Electrochemical (EC) Capacitors Symposium

Advanced Automotive Battery Conferences

AABC Europe 2016 - EC Capacitors Symposium


Monday 25 January 2016


   Session 1: Advances in EC Capacitor Materials and Cell Design
This session will explore the latest advances in materials—including the development of advanced materials and processes to meet the pricing threshold of important markets—and in capacitor design—including the development of advanced asymmetric ECs.
10:00-10:05Chairperson’s Opening Remarks
Prof. Katsuhiko Naoi,
Professor of Chemistry, Institute of Symbiotic Science & Technology, Tokyo University of Agriculture & Technology
10:05-10:25New Insights on Generation-II Supercapacitors
Prof. Katsuhiko Naoi, Professor of Chemistry, Institute of Symbiotic Science & Technology, Tokyo University of Agriculture & Technology
Practical research and developments are now being vigorously conducted to improve the energy density of EDLCs. Soon, we will witness the generation-II or high energy density supercapacitors. The appearance of LIC (lithium ion capacitor) and NHC (nanohybrid capacitor) is certainly regarded as the beginning of an age of improved energy densities in the field of supercapacitors. In the future, other hybrid supercapacitor systems may have the potential to show further enhancements to develop the field of practical supercapacitor devices. The present talk deals with the new insights on ultrafast nanomaterials processed by ultracentrifugation for generateon-II capacitors and PPBS namely Prominence Power Battery System.
10:25-10:45Tracking Ion Fluxes in Porous Carbon Electrodes Used in Double Layer Capacitors
Prof. Patrice Simon, Professor of Material Science, Université Paul Sabatier
This talk will firstly present results about the experimental study of the ion confinement effect on the electrochemical characterizations of microporous carbons. By using Electrochemical Quartz Crystal Micro-balance (EQCM) coupled with in-situ NMR, we will show how the ions and the solvent molecules organize themselves in the carbon pores during the charge and the discharge of EDLCs. These results provide a direct molecular-level insight into the charge storage process in microporous carbon electrodes, and show that the charging mechanisms differ depending on the polarization of the electrode surface. The methodology introduced here opens the way for the study of factors such as relative pore/ion sizes, concentration and solvent effects on the ionic composition of the electric double-layer during charging, questions that are at the heart of current efforts to optimize and improve the energy storage capabilities of supercapacitors.Different behaviors were observed depending on the polarity of the electrodes.
10:45-11:05Novel Concepts of High Energy Electrochemical Capacitors
Prof. Elżbieta Frąckowiak, Professor, Poznan University of Technology
Different types of aqueous electrolytes with a redox activity based on iodine, bromine, sulfur have been used for capacitance enhancement. For the voltage extension, combinations of electrode/electrolyte interfaces with various pH and composition for both negative and positive electrodes were proposed. The detailed electrical examination of such capacitors (by galvanostatic charge/discharge, cyclic voltammetry, electrochemical impedance spectroscopy, floating etc.) confirmed a good cycling, perfect charge dynamics as well as beneficial energy and power values. The capacitor characteristics obtained in aqueous electrolytes can be comparable to the parameters obtained in organic medium.
11:05-11:25Revisiting the Concept of Activated Carbon/Ni(OH)2 Hybrid Capacitors
Prof. Thierry Brousse, Professor of Materials Science, Institut des Matériaux Jean Rouxel (IMN), Université Polytechnique Nantes
For more than two decades hybrid capacitors based on aqueous electrolytes have attracted much attention mainly due to the simplicity of the concept. Most of the research efforts and R&D developments have been dedicated to the activated carbon/KOH/Ni(OH)2 device that has demonstrated very high energy density compared to standard carbon based electrochemical capacitors. On one hand these advances targeted more specifically the improvement of rate capability of the positive electrode which was identified as the kinetically limiting element of the device. On another hand not so much work has been performed aiming at the improvement of energy density which is mostly limited by the negative carbon electrode. Our recent works on functionalized carbons have open new pathways toward the enhancement of capacity (mAh/g) of carbon based electrode. Thus we have applied this strategy to a carbon based negative electrode functionalized with quinone moieties that has been implemented in a carbon/KOH/Ni(OH)2 device and compared to a standard design. Energy density has been drastically improved when functionalized carbon was used without affecting rate capability. Long term cycling efficiency has also been studied and the results will be detailed in this communication.
11:25-11:45Highly Effective Materials for Sacrificial Pre-Lithiation of the Graphitic Anode in Li-Ion Capacitors
Prof. François Béguin, Professor, Poznan University of Technology
Among the various electrochemical capacitors, the lithium ion capacitor displays the highest energy density owing to the use of a negative graphite intercalation electrode. The commercially available systems implement an auxiliary lithium electrode for graphite pre-lithiation. This presentation deals with the optimization of a new concept based on a composite positive electrode constituted of high surface area activated carbon and lithiated materials from which lithium is irreversibly extracted to form the graphite intercalation compound. Both oxides and organic lithiated materials have been used with the objective of increasing the amount of irreversible lithium and thereby of reducing the dead mass introduced in the positive electrode.
11:45-12:05Toward New Electrolytes for Electrochemical Double Layer Capacitors
Dr. Andrea Balducci, Researcher, Helmholtz Institute Ulm
In this presentation the development of innovative conducting salts for EDLCs will be discussed. Furthermore, also the use of computational screening for the identification of innovative solvents for EDLCs will be considered. Particular attention will be dedicated to the following aspects: 1). Influence of the selection on ions on the performance of high voltage EDLCs containing ionic liquids as electrolytes. 2). Influence of innovative electrolyte on the chemical stability of inactive components, e.g. Al current collectors. 3). Advantage and limits related to the use of computational screening for the identification of new electrolytes. The presentation will conclude with a summary and discussion about the next steps necessary for the optimization of high voltage EDLCs containing alternative electrolytes.
12:20-13:45Networking LUNCH
   Session 2: New EC Capacitor Products
This session will review new capacitor products and EC business development activity. Leaders from key companies will discuss present and future products and business development strategies as they expand their product offerings to support the growth of energy-efficient industrial, utility, and transportation-related energy-storage systems.
13:45-13:50Chairperson’s Opening Remarks
Chris Humphrey,
Vice President of Strategy, Maxwell Technologies
13:50-14:10Development of Carbon Material for Higher Voltage EC Capacitors
Udaya Kumara, Director, R&D, Haycarb, PLC
Activated carbon is the key component for EDLC. Physical and chemical characteristics of activated carbon governs the initial capacitance, ESR and life performance of electrodes and cells made from activated carbon. When compared with Haycarb coconut shell based activated carbon grades HCE 202 and HCE 201 currently used in 2.7V 3000F super capacitors. Our new product developed is a promising candidate for 3V and above applications.
14:10-14:30Ionic Liquid-Based Supercapacitors –Targets and Limitations
Dr. Svetlana Menkin Bachbut, Researcher, Energy & Power Group, Elbit Systems
In the last few years, much effort has been dedicated to the development of electrolytes, allowing the realization of high voltage EDLCs (>3 V). Among the electrolytes proposed so far, those based on ionic liquids (ILs) are considered the most promising. Symmetric activated-carbon-based super-capacitors cells comprising ionic liquid electrolyte were studied. Energy density of 32Wh/kg and power density of 14kW/kg were achieved in symmetric lab scale EDLC. However, in the process of the product development several issues such as practical cycle life as function of the maximum voltage, type of activated carbon and the cost of the materials should be addressed.
14:30-14:50Keeping the Ultracapacitor Industry Competitive
Dr. Renee Joost, Program Director, Skeleton Technologies GmbH
The ultracapacitor industry is still an emerging market, yet with significant growth over the past decade. At the same time we have only seen 10% increase in voltage and capacitance from the leading market players. One of the key challenges for the industry is how to power additional growth in a situation where improvements in lithium titanate and other technologies are expanding their territory in the high power/ fast-response niche of the energy storage sector. In order to create a healthy multi-billion dollar market ultracapacitor industry needs to reclaim it´s territory. Skeleton Technologies is at the forefront of this effort by introducing the SkelCap product family, which represents the largest single performance advancement during the past decade.
15:05-15:35Sponsored Presentation
15:35-16:10Refreshment BREAK
   Session 3: EC Capacitor Storage System Applications
This session will review EC module design and system engineering, including those related to transportation, to industrial energy conservation, and to the utility grid.
16:10 -16:15Chairperson’s Opening Remarks
Andrew F. Burke,
Ph.D., Institute of Transportation Studies, University of California, Davis
16:15-16:35High Energy Density Supercapacitors
Prof. Andrew F. Burke, Institute of Transportation Studies, University of California, Davis
Several approaches to increasing the energy density of supercapacitors are considered and evaluated based on calculations and available materials and cell data. By high energy density is meant values approaching that of lead-acid and lithium batteries. It appears that lead-acid energy densities can be achieved in hybrid electrochemical capacitors using lithium or LTO in the negative electrode combined with graphite and/or carbon. Energy densities approaching those of lithium batteries can be achieved in high voltage (1000-2000V) dielectric devices using high permittivity (>5000), nano-composite polymer materials. Test data will be presented for the dielectric materials and for lithium-doped hybrid cells.
16:35-16:55Ultracapacitor Modules that Produce the Highest Power and Efficiency
Dr. Yurii Maletin, Chief Scientist, Yunasko
Yunasko has recently developed a proprietary UC design that enables to assemble modules from 12 V to 112 V wherein from 4 to 42 UC cells are connected in series. The modules demonstrate superior performance as compared with any competing devices as to their power capability and efficiency. The current Yunasko R&D portfolio also includes the following perspective directions: 1). Hybrid Li-ion capacitors (LIC) of enhanced energy density – up to 37 Wh/kg 2). UC devices for high temperature applications – up to 100 °C 3). Proprietary highly productive dry electrode manufacture technology.
16:55-17:15EC Capacitors for Stabilizing Utility Grids with High Renewable Penetration
Dr. Norbert Hennchen, Chief Executive Officer, Freqcon
Integrating high levels of renewable energy without compromising grid stability is a serious challenge for grid operators. EC capacitors in combination with fast-acting power electronics can play a significant role in supplying frequency support services to the grid. This talk will present practical applications in Ireland, a country with 40% renewable target for 2020.

Lithium Titanate Oxide (LTO) Batteries and Supercapacitors as an Option for Hybrid Vehicles
Dr. Tim Coogan, Vice President and General Manager, EIG America, Inc.
Prof. Andrew F. Burke, Institute of Transportation Studies, University of California, Davis
The use of lithium titanate Oxide (LTO) batteries with supercapacitors in micro (start-stop) and mild hybrid vehicles have been studied. The study involves vehicle simulations and laboratory tests of carbon/carbon supercapacitors and 6Ah and 20Ah LTO cells from EIG, Korea. The advantages of LTO batteries for the hybrid applications are evaluated from the test data.

17:35-17:55 Combining Energy with Power: Lithium Ion Capacitors
Benoit Lalande, Senior Application Engineer, JSR Micro
The Lithium Ion Capacitor is an innovative energy storage technology which made its entry into the energy storage markets more than five years ago. In the meantime, it has evolved into an ideal commercialized solution for closing the application gap between Lithium Ion Batteries and Supercapacitors. Combining energy and power with long-lasting life characteristics, lithium ion capacitors are already used today in hybrid buses, trams, hybrid excavators, medical equipment and power quality equipments amongst other applications. Further technology development and high volume production will allow mass deployment of lithium ion capacitors in the energy storage market in the following years. This presentation will explain how ULTIMO Lithium Ion Capacitors combine Energy with Power by discussing: 1). The concept of the Lithium Ion Capacitor technology and its positioning on the Ragone plot 2). How Lithium Ion Capacitors can bridge the gap between Lithium Ion Batteries and Supercapacitors, in particular by looking at similarities and differences in electrical performances 3). Commercial usage cases in different industrial applications, mobile as well as stationary 4). JSR Group High Volume Manufacturing plans 5). A vision on the future of Lithium Ion Capacitors
18:15-19:15postersWelcome Reception