Plus d'info sur IFP Energies nouvelles - Mobilité et Systèmes
Stage Chimie Hauts-de-Seine entre avril et septembre 2023 5 mois
IFP Energies nouvelles (IFPEN) est un acteur majeur de la recherche et de la formation dans les domaines de l’énergie, du transport et de l’environnement. De la recherche à l’industrie, l’innovation technologique est au cœur de son action, articulée autour de quatre priorités stratégiques : Mobilité Durable, Energies Nouvelles, Climat / Environnement / Economie circulaire et Hydrocarbures Responsables.
Dans le cadre de la mission d’intérêt général confiée par les pouvoirs publics, IFPEN concentre ses efforts sur :
Context
Electric vehicle is a promising solution to de-carbonization and in recent years a massive deployment is observed, pushed to a large extent by the policy of reducing CO2 emission and dependence on fossil fuels. However, the safety concerns are obstructing their large-scale applications. One of the main safety concerns is the thermal runaway (TR) of Li-ion batteries (LIB), which has caused many accidents around the globe. These accidents often lead to combustion and explosion, presenting dangers to human lives. The fires of TR are particularly dangerous and very difficult to be extinguished from the outside of the battery. They are also easy to re-ignite because not only flammable gas but also oxygen is released internally.
Therefore, fire-suppressing electrolyte additives are becoming a promising solution as it works inside the battery cells. As temperature increases during TR, liquid organic electrolyte solvent evaporates into the gas-phase, contributing by large amount to the total flammable gas released.
If fire-suppressing additives are present in the liquid electrolyte, they are also evaporated and could lower combustion risks by reducing the gas-phase reactivity. Among the common compounds for such additives, fluorinated electrolyte components, replacing some H atoms in the electrolyte solvent molecule by F atoms, have the advantage of being effective without sacrificing battery energy density and performance.
However, a recent study on an additive of such type found that laminar flame speeds are effectively reduced but auto-ignition risks are increased at some conditions. Therefore, a detailed and better understanding is required on the effects of fire-suppressing electrolyte additives on the combustion properties of LIB fires.
This work aims to study and compare the effects of different fire-suppressing electrolyte additives on the combustion properties of LIB fires by kinetic modeling. The work will include the following:
What you could acquire after the internship
Level: Bac+5 or Bac+4
Duration and dates: 5 months between April and September 2023
Practical information: The internship will take place at IFP Energies Nouvelles in Rueil-Malmaison (west of Paris). The intern will be granted with a financial compensation (unless granted otherwise).
Interested ? Send a letter of motivation and a CV.
Stage Chimie Hauts-de-Seine entre septembre et novembre 2023 de 2 à 3 mois
Stage Chimie Hauts-de-Seine entre aujourd'hui et avril 2023 de 5 à 6 mois
Stage Chimie Hauts-de-Seine entre avril et août 2023 5 mois
Stage Chimie Hauts-de-Seine entre avril et septembre 2023 5 mois
Stage Chimie Hauts-de-Seine entre aujourd'hui et septembre 2023 de 4 à 6 mois
IFP Energies nouvelles - Mobilité et Systèmes
Juan Carlos Lizardo Huerta