Your job alert was successfully created.
CEA Tech
PhD position - Analysis and modeling the evolution of new active materials during the first charge-discharge cycles of a Li-Ion battery
CEA Tech
CEA Tech is building on CEA Leti’s successful track record innovating for industry.
Visit employer page
JOB DETAILS
Published: 5 days ago
Application deadline: Oct 31
Location: Grenoble, France
Please mention that you found this job on Academic Positions when applying.
SHARE THIS JOB

PhD position - Analysis and modeling the evolution of new active materials during the first charge-discharge cycles of a Li-Ion battery

SL-DRT-19-0664

RESEARCH FIELD

Physical chemistry and electrochemistry

ABSTRACT

Facing the energy transition, the storage of energy is a major issue. However, it appears necessary to increase the battery storage capacity and one way could be the use of silicon in addition to graphite for the negative electrode of Li-ion accumulators. The development of accumulators based on these materials is however slowed by their instability, related to the swelling of silicon during the insertion of lithium. Thus, the understanding of the phenomena occurring during the first cycles of operation appear fundamental to master the operation over the long term. This thesis project aims to understand and model the mechanical behavior of these new silicon-graphite electrodes. It is based on 3 teams: in Saclay, we will synthesize custom materials: silicon nanoparticles, silicon / germanium alloys, core @ shell where the shell will be carbon. Commercial silicon / graphite materials will also be used as reference. The behavior of materials will be studied in Grenoble using a laboratory diffractometer allowing in-situ and operando analyzes and large instruments such as ESRF or SOLEIL. These measurements will provide information on the stress inside the silicon but also on the state of lithiation of the graphite and will allow the modeling of the electrochemistry of the insertion of the lithium in the silicon, in particular the dependence in time of the hysteresis, still poorly understood. The aim of the thesis is to build a physics-based battery model allowing: "simple" experiments of swelling measurements, electrical cell performance measurements, early-life and model cycling and modelization, to deduce the mechanical and electrochemical behavior of cells at the scale of grains and agglomerates. This, in order to predict the aging of cells in the long term, in relation with their mechanical properties.

LOCATION

Département de l’Electricité et de l’Hydrogène pour les Transports (LITEN)

Laboratoire Modélisation multi-échelle et suivi Performance

Grenoble

CONTACT PERSON

MATHIEU Benoit

CEA

DRT/LITEN/DEHT/LMP

CEA GrenobleDRT/LITEN/DEHT/SAMA/LMP17 rue des Martyrs38054 Grenoble CEDEX 09

Phone number: 04 38 78 18 44

Email: benoit.mathieu@cea.fr

UNIVERSITY / GRADUATE SCHOOL

Paris-Saclay

Sciences Chimiques: Molécules, Matériaux, Instrumentation et Biosystèmes (2MIB)

FIND OUT MORE

http://iramis.cea.fr/nimbe/Phocea/Membres/Annuaire/index.php?uid=herlin

http://liten.cea.fr/cea-tech/liten

http://iramis-i.cea.fr/nimbe/ledna/

START DATE

Start date on 01-10-2019

THESIS SUPERVISOR

HERLIN Nathalie

CEA

DRF/IRAMIS/NIMBE/LEDNA

IRAMIS/NIMBE/LEDNABât 522CEA Saclay911191 Gif-sur-Yvette Cedex

Phone number: 0169083684

Email: nathalie.herlin@cea.fr

« The age limit is 26 years for PhD offers and 30 years old for post-doc offers. »

Apply now

APPLY FOR THIS JOB

Personal details
Upload your CV and attachments
The file format must be a .doc, .pdf, or .rtf, and the file cannot exceed 2 MB in size.
The file format must be a .doc, .pdf, or .rtf, and the file cannot exceed 2 MB in size.

By applying for a job listed on Academic Positions you agree to our terms and conditions and privacy policy.

SUBSCRIBE TO JOBS LIKE THIS

  • Job types

91 JOBS FROM THIS EMPLOYER

CEA Tech
CEA Tech
Location: Grenoble, France | Closing on Oct 31
PhD position - Study of biomass mixture reactivity (ash and carbon matrix)
SL-DRT-19-0258 RESEARCH FIELD Materials and applications ABSTRACT The context is the thermochemical valorization of unused biomass waste (agricultural or forestry residues) in energy vectors (combustion, gasification for 2G biofuels). These biomasses have...
CEA Tech
CEA Tech
Location: Grenoble, France | Closing on Oct 31
PhD position - Design, fabrication and characterization of microlasers for data communications
SL-DRT-19-0676 RESEARCH FIELD Electronics and microelectronics - Optoelectronics ABSTRACT Needs for high speed datacommunications has increased tremendously these last years. Optical links, usually used for long distance communications, are now used for...
CEA Tech
CEA Tech
Location: Grenoble, France | Closing on Oct 31
PhD position - Epitaxial growth and nanosecond laser annealing of GeSn/SiGeSn heterostructures
SL-DRT-19-0635 RESEARCH FIELD Electronics and microelectronics - Optoelectronics ABSTRACT Since 2015, CEA LETI has the capacity of depositing GeSn/SiGeSn heterostructures on 200 mm substrates. We are currently at the state-of-the-art in several of their...
CEA Tech
CEA Tech
Location: Grenoble, France | Closing on Oct 31
PhD position - Atomic resolution imagery composition measure applied to superarrays
SL-DRT-19-0639 RESEARCH FIELD Solid state physics, surfaces and interfaces ABSTRACT For crystalline materials sensitive to electron beam radiation damage, it is necessary to quantify the chemical composition at the atomic scale while minimizing the electron...

CAREER ADVICE

France has a strong academic tradition and is committed to investing in research and education. Here's what French academics make.

By Academic Positions
Posted Jul 06, 2018 at 08:00am

To ensure you get strong letters of recommendation, follow these simple dos and don’ts.

By Academic Positions
Posted Nov 20, 2018 at 08:00am

On-campus interviews are an essential step in the faculty member, PhD student, or postdoc hiring process.

By Academic Positions
Posted Dec 07, 2018 at 08:00am