A5090008620- Fire dynamics and safety research
- Combustion and Detonation Processes
- Advanced Battery Technologies Research
- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Thermal and Kinetic Analysis
- Risk and Safety Analysis
- Flame retardant materials and properties
- Ionic liquids properties and applications
- Lignin and Wood Chemistry
- Thermochemical Biomass Conversion Processes
- Biofuel production and bioconversion
- Evacuation and Crowd Dynamics
- Chemical Thermodynamics and Molecular Structure
- Fire Detection and Safety Systems
- Fire effects on ecosystems
- Energetic Materials and Combustion
- Catalysis for Biomass Conversion
- Fault Detection and Control Systems
- Underground infrastructure and sustainability
- Extraction and Separation Processes
- Electric Vehicles and Infrastructure
- Electric and Hybrid Vehicle Technologies
- Rocket and propulsion systems research
- Advanced Combustion Engine Technologies
Institut national de l'environnement industriel et des risques
2015-2024
École Supérieure de Chimie Organique et Minérale
2013
The use of the high energy Li-ion battery technology for emerging markets like electromobility requires precise appraisal their safety levels in abuse conditions. Combustion tests were performed on commercial pouch cells by means Fire Propagation Apparatus also called Tewarson calorimeter EU, so far used to study flammability parameters polymers and chemicals. Well-controlled conditions cell combustion are created such an apparatus with opportunity analyse standard decomposition/combustion...
To better rule out the complex fire risk related to large format lithium ion cells, a detailed and systematic evaluation, both at component cell levels, could be an invaluable milestone. Therefore, combustion analysis was conducted for major single organic solvents their mixtures used in battery technology, oxygen rich lean environments using Tewarson calorimeter. Well controlled test conditions have enabled determination of key parameters governing induced hazards such as flash point, ease...
Focus on humins, a co-product from sugar conversion, to highlight their capacity impregnate wood cell walls for making durable products.
The energy storage market relating to lithium based systems regularly grows in size and expands terms of a portfolio power demanding applications. Thus safety focused research must more than ever accompany related technological breakthroughs regarding performance cells, resulting intensive on the chemistry materials science design reliable batteries. Formulating electrolyte solutions with nonvolatile hardly flammable ionic liquids instead actual carbonate mixtures could be safer. However,...
The aim of the study is to provide advanced knowledge on thermal and combustion hazard profiles ionic liquids based an original multiscale combined experimental approach. Experimental tools have been implemented used (a) obtain actual measurements theoretical heats imidazolium-based phosphonium-based by use a bomb calorimeter; (b) access fundamental flammability properties these chemicals through Pyrolysis Combustion Flow Calorimeter; (c) determine behaviour in fire conditions, from...
Abstract The use of ionic liquids (ILs) as advanced electrolyte components in electrochemical energy‐storage devices is one the most appealing and emerging options. However, although ILs are hailed safer eco‐friendly electrolytes, to overcome limitations imposed by highly volatile/combustible carbonate‐based full‐scale precise appraisal their overall safety levels under abuse conditions still needs be fully addressed. With aim providing this level information on thermal chemical stabilities,...
Electrolyte is the critical compound responsible for capacity decay and thermal runaway. A coupling tool volatile soluble degradation analysis proposed.
Abstract A grass soda technical lignin (PB1000) underwent a process combining solvent fractionation and treatment with an ionic liquid (IL), comprehensive investigation of the structural modifications was performed by using high‐performance size‐exclusion chromatography, 31 P NMR spectroscopy, thioacidolysis, GC–MS. Three fractions distinct reactivity were recovered from successive ethyl acetate (EA), butanone, methanol extractions. In parallel, fraction deprived EA extractives obtained. The...
A "waste-valorization" approach was developed to transform recalcitrant hydrolysis lignin (HL) from second-generation bioethanol production into multifunctional bio-based products. The extracted with aqueous acetone, yielding two fractions enriched in and cellulose, respectively. soluble (SHL) converted anionic cationic colloidal particles (CLPs c-CLPs). insoluble cellulose-rich fraction transformed lignocellulosic nanofibrils that were further combined CLPs or c-CLPs obtain nanocomposite...
Na-ion batteries are presented as a complementary technology to Li-ion batteries, that comply with the performance requirements of various applications without being submitted critical raw material dependencies pertaining batteries. Several major industrial actors now committed produce these advocating among others safety gain such technology. Available data on their behavior under thermal runaway nonetheless very limited. This experimental work brings new elements vent gas characteristics...
As Li-ion batteries use is spreading, incidents in large energy storage systems (stationary containers, …) or large-scale cell and battery storages (warehouse, recyclers, …), often leading to fire, are occurring on regular basis. Water remains one of the most efficient fire extinguishing agents for tackling those quantities usually necessary. Since bat-teries contains various potentially harmful components (metals their oxides salts, sol-vents…) that thermal runway induced accompanied with...
The Heat Release Rate (HRR) is a critical parameter to characterise fire. Different methods have been developed estimate it. most widespread techniques are based on mass balance. If the heat of combustion fuel known, measure loss allows its evaluation. burning material can not be identified, calorimetric principles used. They rely oxygen consumption (OC) or carbon dioxide and monoxide generation (CDG) measurements. Their asset comes from observation that amount energy release per unit O2...
This study focuses on the development of reliable methods for predicting heats combustion ionic liquids. A review 18 existing empirical correlations giving developed in early times science has been performed and re-examined a scientifically sound manner their ability to predict On basis database appropriate thermodynamic data established 53 liquids, work showed that at least five models making use constitutional descriptors give pretty good predictions. Moreover, new purpose-built model...