材料科学与电化学方向博士职位

*PRISM programme* The PRISM (PhD Research Programme for International Training in Sustainable Soft Matter) programme has launched its first call for applications, offering up to 14 fully funded PhD fellowships starting from 1 March 2027 at Paris Sciences & Lettres (PSL) University. The programme trains researchers to address ecological transition challenges through sustainable soft matter science, with projects focused on eco-friendly chemical processes, circular economy, renewable energies, and carbon capture, storage, and valorisation. Co-funded by the European Union under Horizon Europe MSCA COFUND (Grant Agreement 101261637) and partner institutions, PRISM provides interdisciplinary, international, and intersectoral training, including mobility opportunities, secondments, and courses in sustainability, innovation, entrepreneurship, career development, and transferable skills. Applications must be submitted via the PRISM website by 31 October 2026 (23:59 Paris time). *The PhD project* STREAM: Seawater Treatment for CO2 Removal via Electrochemical Microelectrode Arrays Among negative-emission strategies, direct CO2 capture from oceans and seawater is particularly attractive because these reservoirs contain about 150 times more dissolved CO2 than the atmosphere. Several electrochemical approaches have been proposed, including bipolar membrane electrodialysis, chloride-mediated electrochemical acidification, and electrochemical hydrogen looping. The latter has demonstrated up to 91% CO2 capture efficiency with an energy consumption of 2.4 GJ per ton of captured CO2. However, many existing approaches overlook potential contamination and material integrity associated with large pH swings and long-term exposure to corrosive environments. Future developments must therefore prioritize the chemical and mechanical stability of materials under extreme pH and salinity conditions, alongside comprehensive techno-economic and life-cycle assessments of technology [1-6]. This PhD project aims to design innovative reactor architectures based on microelectrode arrays capable of generating local pH swings without chemical additives or ion-exchange membranes. The system enables direct CO2 extraction from ocean or seawater, followed by either on-site storage or further electrochemical conversion into value-added products. The CO2 capture relies on two key coupled electrochemical principles: (i) shifting the HCO3−/CO2 equilibrium towards CO2 through local acidification near the electrode surface, and (ii) electrochemically converting the released CO2 to CO, maintaining the bulk pH close to its initial value. This is achieved through integrated microelectrode arrays (MEAs) with micrometer-scale gaps between paired anodes and cathodes, thereby enabling strong spatial confinement of proton and hydroxide fluxes. Local acidification is driven by anodic water oxidation, followed by pH neutralization and buffering in the cathodic CO2 reduction and hydrogen evolution reactions; the latter contribution can be minimized by selecting an appropriate catalyst. The proposed approach offers several advantages over the state-of-the-art CO2 extraction systems. First, it enables a simplified reactor design by eliminating the need for costly ion exchange membranes. Second, the process avoids excessive local pH increase, which can promote unwanted carbonate precipitation at the electrode. CO2 generated close to the anode and not valorized in step 2 at the cathode will be extracted under a small vacuum (along with produced CO) through the designed multilayer gas diffusion electrode (GDE). Over the course of the PhD, this concept will be translated into an integrated flow reactor that combines patterned MEAs, porous transport layers and a multilayer GDE optimized for operation in increasingly complex electrolytes, up to real seawater. The expected outcome is a reactor architecture that maintains high CO2-to-CO selectivity at low cell voltage, with limited metal leaching and stable performance over extended operation. A key objective will be to map the operating window (current density, flow rate, salinity and temperature) that maximizes CO2 extraction efficiency and energy performance, providing quantitative benchmarks for comparison with existing CO2-from-seawater technologies. Building on this platform, the project is expected to deliver optimized MEA designs in which mass transport is actively engineered through microelectrode geometry (electrode size, gap and spacing), tailored PTL/GDL porosity and controlled flow conditions. Catalyst development will focus on robust, low- to non-precious-metal formulations (e.g. Ni-based materials, with small or no addition of Ir, or Au/Ag) synthesized by a combination of thin-film deposition (ALD, PECVD, PVD) and electrodeposition directly on porous supports, with composition and microstructure systematically varied from model electrodes to full MEAs. Performance and degradation mechanisms will be elucidated using operando AFM-based imaging, electrochemical testing and gas/liquid product analysis, establishing clear links between catalyst design, MEA architecture and mass transport. Together, these results will provide experimentally grounded design rules and a versatile, high-impact research framework for a PhD project spanning catalyst synthesis, reactor engineering and advanced characterization. [1] Eisaman, M. D. et al. Energy Environ Sci 5, 7346 (2012), [2] Digdaya, I. A. et al. Nat Commun 11, 4412 (2020), [3] Kim, S. et al. Energy Environ Sci 16, 2030–2044 (2023), [4] Yan, L. et al. ACS Energy Lett 7, 1947–1952 (2022), [5] Macounová, K. et al. Anal Chem 72, 3745–3751 (2000), [6] Monteiro, M. C. O. et al. Nat Commun 12, 4943 (2021) *3i dimensions* INTERNATIONAL : The project has a strong international dimension through its alignment with global research on carbon-neutral technologies, seawater-based CO2 capture, and electrochemical energy conversion. It addresses scientific challenges of worldwide relevance and connects with international communities working on carbon capture and utilization, electrochemical reactor engineering, and sustainable fuels. International collaborations will be strengthened through two short research stays: (i) with Prof. Ulrike Krewer and Dr. Philipp Röse (Karlsruhe Institute of Technology, Germany) on kinetic modelling and local pH effects in CO2 electroreduction, and (ii) with Prof. Emiliana Fabbri (Paul Scherrer Institute, Switzerland) on operando spectroelectrochemical characterization. Participation in international conferences, workshops, and research networks will further enhance the candidate’s integration into the global scientific community. INTERSECTORAL : The project has a strong intersectoral dimension by combining fundamental electrochemistry, materials engineering, and reactor development for sustainable carbon capture and utilization. It addresses key challenges for industrial deployment, including catalyst durability, corrosion resistance, energy efficiency, and scalable reactor design. The proposed microelectrode-array reactor, which controls local pH without chemical additives or ion-exchange membranes, offers significant innovation potential by reducing system complexity, cost, and environmental impact. The multidisciplinary approach creates opportunities for collaboration with industrial partners in carbon capture, electrolysis, and sustainable energy. The project also builds on the ongoing collaboration between the CBI-MIE team and TotalEnergies on advanced electrodes and CO2 electroreduction, extending this work toward direct CO2 capture and conversion from seawater. INTERDISCIPLINARY : The project is highly interdisciplinary, integrating electrochemistry, materials science, chemical engineering, physics, and microfabrication. It combines catalyst design, surface chemistry, transport phenomena, interfacial physics, and reactor engineering to develop efficient seawater-based CO2 capture and conversion systems. Advanced materials processing and operando characterization are coupled with microstructured reactor design, while techno-economic and sustainability aspects ensure relevance for scalable carbon management technologies.

Requirements / required education level / degree: Master Degree or equivalent

Requirements / required education level / discipline: Chemistry

Requirements / skills: We are looking for a highly motivated, rigorous, and enthusiastic PhD candidate with an excellent academic background in physical chemistry, electrochemistry, chemical or energy engineering, materials chemistry, or a closely related field. The successful candidate should have a strong interest in interdisciplinary research at the interface of electrochemistry, catalyst development, materials science, and reactor engineering, with the ambition to contribute to both fundamental understanding and technological innovation. A solid foundation in electrochemistry, including electrode kinetics, mass transport, interfacial phenomena, and electrochemical characterization techniques, is expected. Knowledge of fluid dynamics, transport phenomena, and chemical reaction engineering would be highly valuable, as the project involves the design and optimization of microstructured electrochemical reactors. Previous hands-on laboratory experience in electrochemistry, catalyst synthesis, materials characterization, or electrochemical reactor operation will be considered a strong asset. Experience with computer-aided design (CAD) software for reactor or device design (e.g. Autodesk Fusion 360), numerical data analysis, or programming (particularly Python) would be advantageous. Familiarity with image analysis, simulation tools, or microfabrication techniques would also be appreciated but is not required. The candidate should demonstrate scientific curiosity, critical thinking, and a proactive approach to research. They should be capable of working both independently and as part of a multidisciplinary team, with excellent organizational, communication, and problem-solving skills. Fluency in spoken and written English is essential, as the project involves international collaborations, scientific publications, and participation in conferences. A strong motivation to contribute to the development of sustainable electrochemical technologies for carbon capture and utilization is expected.

Requirements / required languages / language: ENGLISH

Requirements / required languages / language level: Excellent

Research experience / main research field: Chemistry

Research experience / years of research experience: 1 - 4

Additional information / benefits: *Salary* The PRISM programme offers a competitive salary above the national average for PhD candidates in France to attract and support excellent researchers. Doctoral candidates will receive an approximate net monthly salary of €2,200 , with additional family and mobility allowances available for eligible fellows. The salary is subject to French income tax, with the exception of the family and mobility allowances. Depending on the candidate's individual tax situation, income tax may represent approximately 2–5% of the net salary and is levied by the French tax authorities independently of the employer. To ensure consistent management and equal employment conditions across the programme, all PRISM doctoral candidates will be employed by ESPCI Paris , regardless of the host laboratory where their research is carried out. *Employer’s benefits* Remote working opportunities, access to sports and leisure activities, free access to public Paris city council’s swimming pools, access to CROUS canteen, scientific campus in central Paris, professional development programs, well-being workshops, social benefits through CNAS, partial health insurance support, and 75% support for sustainable mobility.

Additional information / eligibility criteria: • At the time of application, candidates must be in possession of their Master’s degree or equivalent/postgraduate degree which formally entitles them to start a doctorate. All applicants with a doctoral degree are ineligible. • A minimum English proficiency level of C1 (Advanced) is required for applicants from non-English-speaking countries. No French language skills are required. • Applicants must fulfil the transnational mobility rule: open to all nationalities but all incoming applicants must not have resided or carried out their main activity (work, studies, etc.) in France for more than 12 months in the 3 years immediately prior to the call for applications deadline. • Applicants must be available to start the program on schedule: 1st March 2027. • Completeness of the application, submitted in English on the PRISM dedicated website, before the deadline of 31 October 2026.

Additional information / selection process: The applications will go through the following assessment steps: 1) Eligibility check to ensure the administrative compliance of the applications (mandatory documents provided and eligibility conditions met). 2) Remote evaluation of each application by different reviewers depending on the open PhD projects selected by the applicants. The selected applicants will be informed of their results, their ranking and invited to participate in the next step of interviews. Unsuccessful applicants will receive a detailed report by email. 3) Interview and selection of the shortlisted applicants via videoconference, comprising: • A presentation (maximum 10 minutes) by the applicant of their motivation for applying to the program, including their experience and training in the field. Applicants will be explicitly asked to explain the fundamentals of the selected PhD research project and its scientific literature. The applicant will have the opportunity to make suggestions to shape their future PhD project. • A series of questions (10 minutes) put by the committee to the applicant. These will include technical questions on the fundamentals of the topic. In addition, in the interests of fairness, a list of common questions will be asked to each applicant.

4) Recruitment: once a candidate has been selected and has accepted the offer, the management team will initiate their recruitment process. For some nationalities, in compliance with French national requirements, the mandatory security clearance procedure will be launched at the final stage of recruitment. In the event of an unfavourable decision, the position will be offered to the next candidate on the reserve list.

Additional information / comment: *Name of the school of PSL* ESPCI Paris - PSL (Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris) *Research Unit* Institute of Porous Materials of Paris, UMR 8004, IMAP Institute Chemistry Biology Innovation, UMR 8231, CBI-MIE This PhD project will be carried out in collaboration between the Institute of Porous Materials of Paris (IMAP, UMR 8004), and the MIE (Materials, Innovation, Energy) team of the institute Chemistry Biology Innovation (CBI, UMR 8231). IMAP laboratory focuses on the development and multiphysical characterization of functional porous materials and their applications in the fields of health (drug delivery, biomaterials), energy (batteries, hydrogen, etc.), and the environment (CO2 capture, sensing, etc.). The group’s research strongly focuses on electrocatalysis for sustainable hydrogen production, CO2 electroreduction, and membrane-based electrochemical energy conversion technologies. The work explores the design and optimization of advanced catalysts, such as transition metal compounds and doped materials, to enhance the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and CO2 reduction reaction (CO2RR). The MIE team of the CBI laboratory focuses on understanding the mechanisms involved in the manufacture of materials. A major part of the team’s work is dedicated to studying the behavior of complex fluids under flow, confinement and instabilities occurring during film lamination or extrusion. This expertise supports the design of advanced energy materials and devices, including electrostrictive, piezoelectric, triboelectric, battery electrode, and CO2 capture and electroreduction systems for low-power energy harvesting, storage, and conversion applications. The team also investigates the mechanisms of the reactions occurring at the electrode/electrolyte interface using a wide range of in situ and operando physicochemical characterization techniques, together with the development of devices operating under well controlled mass-transport conditions. *Supervision* Supervisor: ASSAUD Loïc loic.assaud@espci.psl.eu Co-supervisor: OSHCHEPKOV Alexandr alexandr.oshchepkov@espci.psl.eu Candidates are encouraged to contact the project supervisors to discuss the proposed research topics before applying. All projects are open PhD projects, meaning that the research plan will be further developed collaboratively by the selected doctoral candidate and the supervisors. *Keywords* CO2 capture, seawater treatment, electrochemistry, electrochemical engineering

Additional information / info website: https://prism.psl.eu/en/Projects/STREAM

Work location / nr job positions: 1

Work location / job organisation institute: ESPCI Paris - PSL (Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris)

Work location / job country: France

Work location / job city: Paris

Work location / job postal code: 75005

Work location / job street: 10 Rue Vauquelin

Hiring contact / organisation institute: ÉCOLE SUPÉRIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS - PSL

Hiring contact / organisation institute type: Public Research Institution

Hiring contact / division faculty: Laboratory IMAP

Hiring contact / country: France

Hiring contact / city: Paris Cedex 05

Hiring contact / postal code: 75231

Hiring contact / street: 10 rue Vauquelin

Hiring contact / e mail: contact@prism.psl.eu

Hiring contact / website: https://www.ens.psl.eu/en/laboratoire/institut-des-materiaux-poreux-de-paris-imap

Application / how to apply: website

Application / application website: https://prism.psl.eu/

EU funding / framework programme: Horizon Europe – COFUND

EU funding / cofund nr job position: 1

EU funding / sesam agreement number: 101261637

EU funding / job reference number: PRISM-2026-747908

Research field / main research field: Chemistry

Research field / sub research field: Instrumental techniques

Research field / main research field: Physics

Research field / sub research field: Chemical physics

Researcher profile: First Stage Researcher (R1)

Positions: PhD Positions

Contract: Temporary

Job status: Full-time

Application deadline (as exported; timezone unverified): 2026-10-31T22:59:59