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Portal > Offres > Offre UPR3079-ENCRAY-005 - Chercheur H/F, Optimisation des électrolytes pour batteries Li-ion

Optimisation of Li-ion batteries electrolytes, H/F

This offer is available in the following languages:
Français - Anglais

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General information

Reference : UPR3079-ENCRAY-005
Workplace : ORLEANS
Date of publication : Friday, November 08, 2019
Type of Contract : FTC Scientist
Contract Period : 9 months
Expected date of employment : 1 January 2020
Proportion of work : Full time
Remuneration : between 2530 and 4015 € bruts/month depending on experiencece
Desired level of education : PhD
Experience required : 1 to 4 years

Missions

The POR2E group of CEMHTI-CNRS laboratory (UPR 3079) propose a CDD Chercheur position in the field of electrochemical energy storage. Dr. Raymundo-Piñero, Research Director of CNRS, acts as Principal Investigator of this project.
Nowadays, improving the energy efficiency of systems is an important objective for reducing fossil fuel consumption and CO2 emissions. Electrochemical energy storage systems are able to take an important part in this strategy, allowing lost energy to be recovered and further delivered on demand. Two types of electrochemical energy storage devices are available: accumulators and electric double-layer capacitors (EDLCs). Accumulators have a high energy density but a low power density, whereas EDLCs are able to deliver a high power, but their energy density is relatively low.
The main objective of the project is to develop a new type of batteries of high energy density for hybrid vehicles, stationary applications and energy management. The proposed system will include new electrolytes. By an appropriate choice of the electrolyte it is expected to enhance the voltage of systems and consequently their energy density and their cycle life.
The project involves two academic partners and two companies. One important task of the project will be to select electrode materials and electrolytes which allow high energy density and cycle life to be withstood for fulfilling the requirements imposed by the end-user involved in the project.

Activities

In the project, the fellow activities will include:

- The electrochemical and physico-chemical characterization of the materials provided by the other partners.
- The implementation of these materials in laboratory test cells: Swagelok®, coin-cells and finally pouch cells which will allow the optimized components (electrode materials, electrolyte, separator) to be implemented in a system mimicking the industrial ones.
- The use of several electrochemical techniques for evaluating the performance.
- The comparison of the electrochemical results with the physico-chemical characteristics in order to define optimization strategies.
- The development of advanced in situ/operando techniques including NMR, Raman and mass spectrometry for understand the materials performance.

Skills

-A PhD degree in materials science and electrochemistry, particularly in the field of electrochemical energy storage.
- The candidate should have an important background on electrochemical cells assembling and testing
- Communication skills in English to contribute to scientific dissemination actions

Work Context

The CEMHTI is a CNRS laboratory (Unité propre) including two geographically close sites (Haute Temperature and Cyclotron) with around 100 people.

The laboratory develops expertise and innovative instruments at the national and international level for studying in-situ the physico-chemical properties of materials under extreme conditions.

The researcher (he/she) will be located at the Haute Temperature site of the laboratory in the POR2E (Nanoporous materials for energy and environment) research team.

Constraints and risks

A mobility within the sites of the other partners will be done

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