PhD position - Influence of the battery electrode manufacturing process on electrode characteristics and electrochemical performance

OPPORTUNITY DETAILS

Total reward

0 $

State University

CEA Tech

Area

Western Europe

Host Country

France

Deadline

31 Oct 2021

Study level

Doctoral Degree

Opportunity type

PhD

Specialities

Engineering , Physics , Chemistry

Opportunity funding

Not funding

Eligible Countries

This opportunity is destined for all countries

Eligible Region

All Regions

SL-DRT-21-0856

RESEARCH FIELD

Electrochemical energy storage incl. batteries for energy transition

ABSTRACT

For several years now, the processes for manufacturing battery electrodes have been unchanging. Indeed the electrodes are manufactured by coating on collector. The coated electrodes are then calendered to obtain the desired electrode porosity. Thus, well mastered formulations exist and can be adapted to many active materials. Once calendered and assembled into batteries, the electrodes allow to obtain cells that can be tested in laboratory.Despite this, the emergence of new materials sometimes induces difficulties in obtaining homogeneous electrodes.Thus, the aim of the thesis is to make a complete study of the influence of each component and of the manufacturing / post-manufacturing parameters on the electrode properties. This study is carried out with the aim of being able to find laws of behaviour and influence of materials. This will lead to the possibility to adapt preliminary of the manipulation to each of the components introduced in the electrode without going through a parametric study.Then, during the PhD, we will then be able to use this new knowledge to develop specific formulations for the new desired cell properties such as fast charging.All the means available at CEA and partners concerning batteries/rheology will be used such as dispersion mixer, planetary mixer for inks, different means of electrode coating and calendering, possibility to extend the study to electrode extrusion, simple rheology and capillary rheometer, cycling benches and potentiostats, DRX, SEM, Raman, MET, porosimeter, specific surface measurement, ...Funding for this topic is still in discussion and not confirmed.