Recycled carbon fibers as viable anode materials for sodium-ion capacitors
This publication explores a new high-value application for recycled carbon fibers as electrode materials for sodium-ion capacitors. The study evaluates PAN-based and pitch-based recycled carbon fibers recovered through different recycling processes and compares their structural, physical and electrochemical properties with conventional hard carbon. The results show that recycled carbon fibers can effectively store sodium ions and, in particular, outperform hard carbon at high current rates. This highlights their strong potential for power-oriented energy storage applications, while also contributing to the valorization of end-of-life composite materials within a circular economy approach.