12/03/2021

Wet chemical synthesis of divided sulfides towards All solid state lithium batteries electrolytes

This job offer has expired


  • ORGANISATION/COMPANY
    IFP Energies nouvelles (former Institut Français du Pétrole – IFP)
  • RESEARCH FIELD
    ChemistryInorganic chemistry
    ChemistryPhysical chemistry
  • RESEARCHER PROFILE
    First Stage Researcher (R1)
  • APPLICATION DEADLINE
    31/07/2021 23:00 - Europe/Brussels
  • LOCATION
    France › Solaize
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    40
  • OFFER STARTING DATE
    01/12/2021

OFFER DESCRIPTION

Nowadays, solid electrolytes are considered to be the key to the development of next generation batteries. Polymers and inorganics are two types of lithium conducting solid electrolytes which have been widely studied but their performances are still limited. A promising route to reach efficient electrolytes is to use inorganic nanoparticles.

Among the different inorganic materials available, the sulfur family (Li7P3S11, Li6PS5X with X= Cl, Br, I) exhibits high ionic conductivities. However, such materials are mostly obtained by solid state synthesis resulting in aggregated micrometric particles. Moreover, although some wet chemical synthesis were recently reported, the capability to control the size, the morphology and to prevent the aggregation has not been exploited yet.

The aim of this PhD project is to develop a synthesis method allowing the control of the particles size, morphology and aggregation to yield finely divided sulfur compounds. The idea is to adapt well-known oxide nanoparticles preparation methods to the wet chemical synthesis of sulfide phases. Various levers such as the reaction temperature, the nature of the solvent and the reagents as well as the addition of stabilizing agents will be explored. After physicochemical characterization, the ionic conductivity of the resulting sulfur particles will be measured and the most promising materials will be used to obtain electrolytes. The influence of the nanoparticles size and morphology will be studied. The best electrolytes will be tested in assembled coin cells.

More Information

Offer Requirements

  • REQUIRED EDUCATION LEVEL
    Chemistry: Master Degree or equivalent

Skills/Qualifications

  • Materials wet chemical synthesis
  • Chemistry laboratory skills
  • Inert atmosphere handlings would be appreciated
  • Knowledge in sulphur chemistry would be apreciated

Work location(s)
1 position(s) available at
IFPEN
France
Solaize
69360
Rond-point de l'échangeur de Solaize

EURAXESS offer ID: 615416

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