Advanced Test Cell Development for Operando Optical Characterization of Solid

il y a 6 jours

Grenoble, France CEA Temps plein

Description du poste

**Domaine**:

- Chimie

**Contrat**:

- Post-doctorat

**Intitulé de l'offre**:

- Advanced test cell development for operando optical characterization of solid H/F

**Sujet de stage**:

- Advanced test cell development for operando optical characterization of solid state battery cross sections

**Durée du contrat (en mois)**:

- 18

**Description de l'offre**:
Monitoring and understanding the complex interactions occurring at the interphases between different components and materials in solid-state batteries is key to improve their performance and lifetime. Optical microscopy and spectroscopy techniques are widely used for post-mortem battery analysis but are more difficult to implement in operando analysis due to the required direct optical access to the region of interest. To circumvent this issue and gain simultaneous access to numerous interphases we target the characterization of cross-sections of battery stacks obtained by new micromachining techniques developed in the lab. The aim of the postdoc is to design and fabricate optical test cells compatible with the prepared battery cross-sections in order to demonstrate and study their electrochemical cycling under controlled temperature and mechanical pressure. Simultaneous operando analysis by optical microscopy and vibrational Raman spectroscopy will be pivotal in studying all-solid battery systems [1]. Prototype cells already available in the lab may be used and incrementally modified to gather preliminary data on limitations, artefacts and reproducibility. The newly developed test cell incorporating temperature and pressure regulation [2] will be used to study degradation mechanisms and characterize all-solid systems during ageing. It carries a good potential for valorization through both patents and publications.

Location and duration: The position is funded for 18 months and is based in CEA Grenoble campus. The lab is located near the city center of Grenoble, which offers an exceptional working environment as well as a good quality of life, in the heart of the French Alps.
- Knowledge in materials characterization & micromachining and/or electrochemistry is a plus.

Localisation du poste

**Site**:

- Grenoble

**Localisation du poste**:

- France, Auvergne-Rhône-Alpes, Isère (38)

**Ville**:

- Grenoble

**Langues**:

- Anglais (Courant)

Demandeur

**Disponibilité du poste**:

- 01/04/2025

Informations générales

**Entité de rattachement**:
Le CEA est un acteur majeur de la recherche, au service des citoyens, de l'économie et de l'Etat.

Il apporte des solutions concrètes à leurs besoins dans quatre domaines principaux : transition énergétique, transition numérique, technologies pour la médecine du futur, défense et sécurité sur un socle de recherche fondamentale. Le CEA s'engage depuis plus de 75 ans au service de la souveraineté scientifique, technologique et industrielle de la France et de l'Europe pour un présent et un avenir mieux maîtrisés et plus sûrs.

Implanté au cœur des territoires équipés de très grandes infrastructures de recherche, le CEA dispose d'un large éventail de partenaires académiques et industriels en France, en Europe et à l'international.

Les 20 000 collaboratrices et collaborateurs du CEA partagent trois valeurs fondamentales:

- La conscience des responsabilités
- La coopération
- La curiosité

**Référence**:2025-35035

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