CEA | 10 AVRIL 2012 | PAGE 1

Title:

Electrolyte solide pour accumulateur Li-ion

Primary lab:

Liten (Laboratoire d’Innovation pour les Technologies des Energies Nouvelles - Laboratory for Innovation in New Energy Technologies)

www.liten.fr

http://www.cea.fr/le-cea/les-centres-cea/grenoble

Responsible person :

Vasily TARNOPOLSKIY

(Vasily.TARNOPOLSKIY@cea.fr)

Secondary lab:

Centre Européen de la Céramique

SPCTS UMR CNRS 7315 – LIMOGES, France

Université d’inscription - Ecole doctorale :

Université de Limoges (ED 521)

THE TOPIC TO BE ADRESSED :

| PAGE 2Encadrant CEA: Vasily

Combine all-solid-state batteries ADVANTAGES (safety, durability…)

and reach good gravimetric and volumic energy density

Eliminate flammable & toxic liquid electrolyte

The state of the art:

Develop Inorganic solid electrolyte

Scientific problem to solve: IMPLEMENTATION in Lithium battery

cathode

anode

Implementation of new techniques to ensure interphase contacts

Expected results and methods to use:

- Initiate the work on the all solid Li-ion batteries in LITEN- Assemble first operational all-solid-state Li-ion cells

Techniques : Solid-state and sol-gel synthesis, Flame Spray Pyrolysis, plasma deposition, Spark Plasma Sintering, Impedance.

Need to improve the SAFETY of Conventional Li-ion cells for large format applications !

STRONG POINTS AND MISSON OF CEA

| PAGE 3

Strong experience in solid-state synthesis (CEA), ceramic powders treatment (Limoges), conventional lithium-ion batteries (CEA).

Few experience in all-solid-state batteries (to be gained during this work).

Stack realization: pack the layers with perfect contact between the particles: Sintering Technics comparison then process optimization

Activity sharingSynthesis and purchase of solid

electrolytes, characterizationPellet sintering / stack assembly

(try different methods)Cell assembly,

electrochemical evaluation

Position of the team in relation to the state of the art:

Major technology focus:

Encadrant CEA: Vasily Tarnopolskiy

EXPERIMENTAL FACILITIES AND WORK CONTENT

- Synthesis: millers, reactors, ovens…- Nano-characterization platform: 2500m2 of labs;- LIB assembling: glove boxes (and dry rooms);- LIB testing: Battery cyclers, FRAs.

Solid electrolyte

synthesis and characterization

Electrolyte pellet manufacturing and

testing in the impedance cell

Internal experimental means CEA:

External experimental facilities (including experienced in ceramics users):- Materials synthesis and treatment:

CVD reactors with microwave plasma assistance, laser ablation, plasma transfer and projection, spray pyrolysis, ceramic treatment (tape casting, lithography, extrusion, pressing), powder printing methods, sintering methods (including SPS);

- Materials characterization (optimized for powders, ceramics and surfaces treatment): XRD, SEM, AFM, XPS, IR, BET, DLS, spectroscopic, mechanical and thermal methods, etc.

Milestones:

Sujets Phares de la DRT Encadrant CEA: Vasily Tarnopolskiy SL-DRT-14-0697

1st year

Full cell:electrodes design +

planar stack assembly

3rd year2nd year