Position #6 – Ferroic and MultiFerroic Materials for Energy

Host institution
FR - CentraleSupélec
Lab or research department name
Structures, Propriétés, Modélisation des Solides
Domain
Physics
Type of mobility
staff
Duration (months)
From 1 to 3 months
Description

A realistic solution to the energy storage problem must include a high energy capacity, the possibility to furnish a high power and refuelling in a reasonable time, a good lifetime, a minimisation of pollution and risks and of course a low cost of production. In the field of industry, there are several drawbacks to the utilisation of batteries (for instance in cars) and more and more attention is cast on the possibility to replace them by the so-called super or ultra capacitors. Supercapacitors (SC) are material close to condensers in their operating ways excepted that they are usually composed of very porous materials such as carbon which allow a huge surface (typically more than 2000m2) to store ionic charges. This gives to SC a higher power density (W/kg) much better than conventional condensers; they have a much lower time of charge and discharge, several seconds instead of several minutes and a better lifetime, typically 106 instead of 103 units of cycles. BUT they have the drawbacks of lower power density and energy density (Wh/kg) than batteries (typically with a 25 factor: Up to now, the SC’s autonomy is far from this level even though they have supplementary advantages such as a low temperature dependence of performances, a high immunity to shocks and vibrations. Clearly a breakthrough is needed to push the performance of SC towards realistic applications.
We have recently published a survey1 showing that Ferroic and MultiFerroic Supercapacitor can be built and eventually replace current hybrid supercapacitors systems if some limitations like the breakdown field in the materials could be overcome. This new type of SC based on ferroic materials( Ferro-SC), would have much higher performances in terms of energy storage in order to get good autonomy. Moreover these systems would charge much more rapidly than electrochemical double layer capacitors (typically several minutes). Besides there would not be any chemical reaction like in conventional SC during charges and discharges and therefore no risk of overheating that can’t be managed, no hydrogen formation, nor risk of explosion, several big advantages compared with conventional SC or battery.
From long time SPMS laboratory has a leading group in the field of Ferroic and MultiFerroic materials, with long standing international collaborations (further details, list of publications etc can be found in www.spms.ecp.fr ). Via the Erasmus Mundus EASED program SPMS want to enlarge and deepen this set of collaborations in the field of properties-microstructure relationship by offering a position to researchers and/or graduate/post graduate students working in the fields of Ferroic and multiferroic materials.

http://archive.ecp.fr/en/J_erasmus_mundus/J3_erasmus_mundus_EASED/PDF/EM_EASED_ECP_SPMS.pdf

When
From January 2016
Maximum available positions
1
Contact
Jean-Michel Kiat <jean-michel.kiat@ecp.fr>
URL
http://www.spms.ecp.fr