Hipohybat

As part of her PhD, Rébecca Bazin developed an electrochemical functionalization strategy for self-supporting carbon electrodes to increase the stability window of aqueous supercapacitors while preserving their capacitive properties and improving their energy density. The formation of an electronically insulating, ion-conducting and hydrophobic film helped prevent parasitic reactions responsible for stability losses.

A single synthesis method is not sufficient to provide a relevant range of materials to enhance the power performance of electrodes for the devices envisioned in the HIPOHYBAT project. Thanks to the synergy of the approaches considered—surface modifications, defect introduction, and composite development—the targeted performance for high-power sodium-ion batteries and hybrid batteries is within reach. These strategies were presented at the PEPR Batteries Day in Grenoble in January 2026.

The HIPOHYBAT project presents initial electrochemical characterization results of new materials for high-power batteries.