Theme 2 - Complex Interfaces: Instrumentation, In Situ Characterization, and Operando Monitoring
Moderators: K. Ngo and A. Wilson
Studying complex system surface reactivity demands specific instrumentation. Our "Complex Interfaces" theme integrates the laboratory across various scientific and technical axes. We utilize a wide array of instruments (IR, XPS, UV-Vis, FTIR, Raman, etc.), coupled with characterization techniques from the Fédération de Chimie et Matériaux de Paris Centre (electron microscopy, NMR, XRD, etc.) and the university's facilities (clean room). Emphasizing major instrumental developments supporting original advances in materials science, our projects delve into operando catalyst studies, material degradation, energy conversion and storage, and microsystems and sensors.
Technical advancements in in situ and operando analysis are vital for catalyst research. Achieving high-performance catalysts and maintaining their efficacy under real reaction conditions necessitates understanding their fundamental properties, active phase dynamics, and interaction mechanisms. Our laboratory excels in synthesizing catalysts that evolve during reactions, leveraging multi-metallic nanoparticles and atomically dispersed precursors. Collaborations with research federations and projects (e.g., CNRS MITI 2023, ANR JCJC SACOCHE) equip us with cutting-edge instrumentation like operando reactors and coupled spectroscopic techniques, enhancing our capability for catalyst analysis.
Understanding material degradation is pivotal for designing durable materials. Degradation can impair performance across various applications, necessitating intensive study. Our electrochemistry-focused group intensifies material degradation research, particularly corrosion and corrosion protection. Projects span diverse materials, from high-entropy alloys to titanium implants, with an emphasis on developing measurement techniques and coatings for harsh environments. Incorporating artificial intelligence, our exploratory projects aim to guide research toward corrosion-resistant materials and coatings.
Our energy research focuses on electrochemical storage systems and membrane-free redox flow microbatteries. Addressing challenges in proton and sodium batteries, we explore novel electrolyte compositions and electrode materials for enhanced performance and longevity. Additionally, we innovate membrane-free microbatteries for portable applications, leveraging porous electrodes and ionic liquid mediums for improved energy storage and device integration.
Our microsystems development includes microfluidic chips with integrated electrodes, facilitating precise electrical or electrochemical measurements. Ongoing projects include a "kidney on a chip" for real-time monitoring of physiological changes and biosensing platforms for water resource monitoring. Combining nanoplasmonics, microfluidics, and sensitive spectrometry, we target organic pollutants, offering rapid and accurate detection capabilities.