Research database

PEAR proposes a transformative approach by developing aluminium-based hybrid capacitors (HCs) that combine high energy and power densities. The core innovation targets the creation of an aluminophilic interface and chloro-aluminate free electrolytes capable of enabling reversible Al3+ electrochemistry. The project is structured around three key objectives: (1) activation of aluminium surfaces to overcome native oxide barriers and enable reversible Al3+ deposition; (2) formulation of stable, chloro-aluminate free electrolytes with optimized Lewis acidity; and (3) validation of these materials in prototype HCs to demonstrate feasibility and performance. A strong interdisciplinary methodology integrates surface science, electrochemistry, materials synthesis, and advanced characterization techniques (SEM, XPS, Raman, IR, NMR), supported by computational modelling and life cycle assessments. Results from PEAR will provide unprecedented insights into Al-ion interface chemistry, enabling efficient and safe storage technologies. By bridging the gap between batteries and supercapacitors, PEAR's Al-based HCs will serve applications ranging from electric vehicles to stationary grid storage. The project is aligned with EU priorities for circular economy and energy resilience. With aluminium recycling requiring only 5% of the energy of primary production, and Europe possessing a robust Al recycling infrastructure, PEAR is uniquely positioned to catalyze sustainable innovation. PEAR will also serve as a stepping stone toward the development of full Al-ion batteries and improved electroplating techniques, impacting sectors such as electronics, automotive, and aerospace. Beyond technical goals, PEAR commits to open science, inclusiveness, and industrial collaboration to accelerate the commercialization of EU-based, post-lithium energy solutions.