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Frédéric LE CRAS


Published on 17 April 2024

Frédéric LE CRAS

Dr. hab., CEA Fellow

A Grenoble INP engineer with a PhD in physics and habilitation to supervise research (HDR) from Grenoble Alpes University, he has been developing materials and components for lithium batteries at CEA since 1992.

He is currently seconded to the ICMCB in Bordeaux.​





  • ​​6 staff
  • 1 postdoc
  • 3 PhD students​​​

Research Activities​

- Electrode materials and inorganic solid electrolytes
- All-solid-state lithium & Li-ion batteries
- Interface engineering & thin film deposition (PVD, ALD)
- Model materials & systems for the study of electrode and interfacial processes
- High-throughput screening of materials. ​

Open positions:

Optimization of Interfaces in High-Temperature Fuel Cells (SOFC) and Electrolyzers (SOEC) by Magnetron Sputtering Deposition

​> High-throughput experimentation applied to battery materials

>​​ Development of thin film negative electrodes for Li-free all-solid-state batteries


Selected publications and conferences:  

  • Unveiling the origins of high ionic conductivity in lithium phosphorus oxynitride amorphous electrolytes, Chemistry of Materials, 2023, DOI: 10.1021/acs.chemmater.3c02099 
  • High throughput experimentation and computational freeway lanes for accelerated battery electrolyte & interface development research, Advanced Energy Materials, 2022, DOI: 10.1002/aenm.202102678
  • Lithium-rich layered titanium sulfides Li1 xTi1-xS2 and their behavior as cathodes in rechargeable lithium batteries, Energy Storage Materials, 2020, DOI: 10.1016/j.ensm.2019.12.033 
  • Composition dependence of ionic conductivity in LiSiPO(N) amorphous thin-film electrolytes for solid-state batteries, ACS Applied Energy Materials, 2019, DOI: 10.1021/acsaem.9b00415
  • All-solid-state lithium-ion microbatteries using silicon nanofilm anodes: high performance and memory effect, Advanced Energy Materials, 2015, DOI: 10.1002/aenm.201501061 

Selected patents: 

  • 2019 | Method for preparing an amorphous film made from lithiated metal sulfide or oxysulfide, US Patent 10,199,634
  • 2015 | All-solid-state lithium battery, and production method therefor, US Patent 9,105,903
  • 2010 | High-voltage positive electrode material having a spinel structure based on nickel and manganese for lithium cell batteries, US Patent 7,754,384