Works of RS2E researchers provide vital guidelines for designing energy efficient disordered rock salt cathode materials.
A mixed Collège de France/ ICGM team, helped by scientists from the Paul Scherrer Institute and the University of Illinois, tried to understand the low energy efficiency of electrode materials with high capacity.
Thanks to an arsenal of analytical techniques, the researchers studied the charging/discharging behavior of two model disordered rock salt materials: Li1.3Ni0.27Ta0.43O2 and Li1.3Mn0.4Ta0.3O2.
The observations, coupled with theoretical calculations, show that the voltage drops in materials based on nickel (Ni), can be explained by modifications of the energy states of different chemical element and structural modification. These changes trigger O2 release and hysteresis (important voltage difference between charge/discharge). In light of these results, the researchers proposed a correlation between the hysteresis and the charge transfer gap.
All the results can be read in the article published in the journal JACS (Journal of the American Chemical Society).
DOI : 10.1021/jacs.8b11413
At the end of May, the EMRS-2019 Spring meeting was hold in Nice. At this occasion, a RS2E PhD student won an award for her excellent oral presentation.
Charlotte Bodin, from the Charles Gerhardt Institute in Montpellier (ICGM), was awarded the first Nature Energy Award for her oral presentation titled "Biredox Ionic Liquids: New Opportunity For High Energy Supercapacitors" during the EMRS-2019 Spring meeting (May 27 - 31).
The young researcher is in her 3rd year of thesis, funded by the RS2E, under the supervision of Olivier Fontaine and Frederic Favier (ICGM) and in collaboration with Patrice Simon and Pierre-Louis Taberna, from the CIRIMAT in Toulouse. Her works (in French) are about a new generation of binders and electrolytes based on ionic polymerized liquid and open the way to flexible and self-healing supercapacitors.
The use of the Electrochemical Quartz Crystal Microbalance (EQCM) was a key element in her researches to demonstrate and understand the specific interactions between the electrode and the redox molecules. These results have impacts over the supercapacitors because they may help to explicit the redox mediators in others energy storage systems as the lithium-ion, lithium-air and lithium-sulfur batteries.
The BPI (French Public Investment Bank) will host at the end of the month a business workshop for all the professionals from the battery world.
The BPI organizes May 28th, with the support of the RS2E, a workshop on batteries. This meeting will address the main trends of market, innovation and R&D, the industrial challenges and the initiatives from the European commission in the context of the European Battery Alliance.
The meeting will take place from 9:00 am to 5:00 pm at BPIfrance Hub, 6-8 boulevard Haussmann, near the Richelieu-Drouot subway station.
You can find the program and sign up here.
The Sweden capital will host from the 1st to 5th September the 2019 edition of the EUROMAT congress. The E3 symposium will focus on batteries.
“Batteries: from Materials to Cell.” The E3 symposium of the EUROMAT congress will communicate recent progress in advanced batteries for electrochemical energy storage.
It is organized with the help of two members of RS2E, Laure Monconduit from the Charles Gerhardt Institute and Mathieu Morcrette from LRCS. Dr. Fanny Barde, Prof. Serena Corr and Prof. Kimberly See are also part of the organizing committee.
The symposium will take place in Stockholm between the 1st and 5th September in the City Conference center.
You can submit your abstract before the 28th February following this link: https://euromat2019.fems.eu/abstracts-submission/
Here, to know more about the program.
A CECAM workshop titled “Theory meets industry” will be organized in Paris between the 12th and the 14th June.
How much energy can an electrochemical energy storage device store? How fast can it be charged? Those questions are practical issues for the industrials and the next CECAM workshop will try to answers some of their interrogations.
Marie-Liesse Doublet from the Charles Gerhardt Institute and Mathieu Salanne from Sorbonne University organize the meeting, which will take place from the 12th June to the 14th June in Paris. Their aim: “To bring together some of the worldwide experts in the field of electrochemical energy storage simulations […] with the interested industrial partners.”
More information about the location will be published soon. However, the list of the invited speakers is already available.
The instructions to apply can be found following this link: https://www.cecam.org/workshop-6-1734.html
To know more: https://www.cecam.org/workshop-0-1734.html