Nanocrystal-polymer composite membranes for advanced electrolysis

Advanced electrolyzers are a promising platform for the Power‑to‑Molecules approach, in which electrical energy is used to transform molecules on demand. This strategy directly addresses two major global challenges: the production of renewable hydrogen and the conversion of CO₂ into valuable chemicals. Achieving high performance and long‑term stability requires a holistic design of electrolyzers, ensuring proper interplay between electrodes and electrolytes.

At imec, the development of nano‑architectured electrodes (nanomeshes) is complemented by the design of innovative membranes. These membranes must provide sufficient ionic conductivity while acting as effective barriers to minimize undesired gas and liquid crossover between the anodic and cathodic compartments. As an alternative to porous membranes made from organic polymers, imec has introduced inorganic hydrogels based on inorganic nanoparticles. Although promising, this technology still faces challenges - particularly in terms of physical stability. Incorporating polymeric reinforcers can provide the necessary cohesive strength to overcome this limitation.

In this project, you will explore the use of polymeric scaffolds as additives to create composite membranes with enhanced mechanical stability. Approaches such as in situ polymerization and wet infiltration of hydrogels will be implemented to achieve homogeneous and nano‑integrated membrane structures. Characterization will include techniques such as confocal and electron microscopy, ionic conductivity and permeation measurements, as well as operando stability tests under relevant electrolysis conditions