M/F Post-doctorat in material science

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M/F Post-doctorat in material science

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Job description

Offer DescriptionWe have developed alternative synthetic pathways to hydrido-closo-borates,5 from sodium borohydride. Due to unexplained selectivity in boron cluster formation, a detailed mechanistic understanding is necessary. This postdoctoral project aims to explore solvothermal synthesis routes for cost-effective boron-based electrolytes.A systematic screening of synthesis conditions will be carried out, including solvents, counter-ions (e.g., tetraethylammonium), and experimental parameters (time, temperature). To optimize these parameters, active learning techniques based on Bayesian optimization will be applied. In situ or ex situ characterizations (FTIR, ¹¹B/¹H NMR, HP-DSC, MS) will be used to understand the mechanisms and selectivity by identifying reaction intermediates. The synthesized materials will be characterized by X-ray diffraction (XRD), FTIR, Raman spectroscopy, and solid-state NMR (¹H, ¹¹B). Their electrochemical properties will be evaluated using electrochemical impedance spectroscopy and cyclic voltammetry.All-solid-state batteries represent the next generation of M-ion battery technology. They promise improved safety, higher energy density, enhanced stability, and greater efficiency. However, compared to conventional Li-ion batteries using liquid organic electrolytes, solid electrolytes face intrinsic challenges: (i) lower ionic conductivity, (ii) reduced interfacial contact between electrodes and electrolytes, (iii) mechanical stress due to volume changes during cycling, (iv) complex shaping of full cells, and (v) overall cost. One particularly promising family is that of hydridoborates, especially boron cluster compounds like hydrido-(closo)-(car)borates that combine high ionic conductivity up to few mS·cm−1, excellent electrochemical and thermal stability and good mechanical properties (low shear and bulk moduli). However, their synthesis typically relies on hazardous and costly borane chemistry, reducing the cost-effectiveness for practical application. Developing efficient and scalable synthetic routes remains a bottleneck.Where to apply WebsiteRequirementsResearch Field Chemistry Education Level PhD or equivalentResearch Field Physics Education Level PhD or equivalentResearch Field Technology Education Level PhD or equivalentLanguages FRENCH Level BasicResearch Field Chemistry Years of Research Experience NoneResearch Field Physics Years of Research Experience NoneResearch Field Technology Years of Research Experience NoneAdditional InformationEligibility criteriaThe candidate must hold a PhD in materials science or inorganic chemistry. Prior experience in synthesis under inert atmosphere using Schlenk techniques is required. We are looking for a highly motivated researcher with solid expertise in the synthesis and characterization of inorganic materials. Proficiency in techniques such as XRD, FTIR, Raman, TGA, and DSC is essential. The successful candidate must demonstrate autonomy, scientific curiosity, and enjoy collaborative team work.Additional commentsThis position is located in a sector covered by the protection of scientific and technical potential (PPST) and therefore requires, in accordance with the regulations, that your arrival be authorized by the competent authority of the MESR Website for additional job detailsWork Location(s)Number of offers available 1 Company/Institute Institut de Chimie et des Matériaux Paris-Est Country France City THIAIS GeofieldContact CityTHIAISSTATUS: EXPIREDShare this page

Expected salary

Location

Thiais, Val-de-Marne

Job date

Sat, 23 Aug 2025 01:28:29 GMT

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