Researcher: Design- development of high power, high energy Na-ion batteries through interphase engineering (M/F)

12 Mar 2024
Job Information

Organisation/Company

CNRS

Department

Chimie du solide et de l'énergie

Research Field

Chemistry
Physics
Technology

Researcher Profile

First Stage Researcher (R1)

Country

France

Application Deadline

1 Apr 2024 - 23:59 (UTC)

Type of Contract

Temporary

Job Status

Full-time

Hours Per Week

35

Offer Starting Date

1 May 2024

Is the job funded through the EU Research Framework Programme?

Not funded by an EU programme

Is the Job related to staff position within a Research Infrastructure?

No

Offer Description

Li-ion batteries (LIBs), one of the major advancement in the history of technology, has reached its current state of maturation solely after tuning the electrode- electrolyte interface, which is most important in governing the life and safety of a battery and least understood yet within the field. A similar thrive is essential for sodium ion batteries (NIBs), which are currently on endeavor to take a share from LIB market, due to their low cost, sustainability and almost same engineering that can be used for both LIB and NIB assemblies. Significant achievements were made and the Na-ion cells based on polyanionic Na3V2(PO4)2F3- hard carbon chemistry are under commercialization thanks to the interphase engineering by electrolyte optimization. Now, the next step is to move for cheaper and high energy electrode materials without compromising the power capabilities. In such case, more deep understanding on the materials level as well interface is required as the conductivity in the bulk electrolyte, interphase as well as Na-ion diffusion in the electrode plays a huge role in deciding the power rate capability as well as the cell life. This is what the researcher will explore by modifying the positive/ negative electrode and studying the interface chemistry by operando and ex-situ techniques.

The study will focus on high energy electrode materials together with different electrolyte formulations based on new additives and co-solvents as well as new chemistries such as highly concentrated electrolyte and locally concentrated electrolytes. The interface chemistry and its stability will be followed by RRDE, cyclic voltammetry (both on oxidation, reduction), galvanostatic cycling and change in resistance upon cycling. Pressure changes and gaseous product evolutions during interface formation and upon cycling will be followed by pressure analyses and mass spectrometry.

Majority of the work will be carried out in Chimie du solide et énergie at Collège de France, Paris. Few travels to other laboratories in RS2E network is expected based on the requirement.

Requirements

Research Field

Chemistry

Education Level

Master Degree or equivalent

Research Field

Physics

Education Level

Master Degree or equivalent

Research Field

Technology

Education Level

Master Degree or equivalent

Languages

FRENCH

Level

Basic

Research Field

Chemistry

Years of Research Experience

None

Research Field

Physics

Years of Research Experience

None

Research Field

Technology

Years of Research Experience

None

Additional Information
Eligibility criteria

Resarcher with 3 or more years of research experience in the Li/ Na-ion battery field is required. Candidates with phd will be preferred. A multi-disciplinary profile with notions of materials science and electrochemistry would be welcome as well as fluency in English.

Website for additional job details

https://emploi.cnrs.fr/Offres/CDD/UMR8260-SATMAR-008/Default.aspx

Work Location(s)

Number of offers available

1

Company/Institute

Chimie du solide et de l'énergie

Country

France

City

PARIS 05

Geofield

Where to apply

Website

https://emploi.cnrs.fr/Candidat/Offre/UMR8260-SATMAR-008/Candidater.aspx

Contact

City

PARIS 05

STATUS: EXPIRED