Atmospheric pressure <scp>plasma‐jet</scp> treatment of polyacrylonitrile<scp>‐nonwovens</scp>—Stabilization and <scp>roll‐to‐roll</scp> processing

Abstract Carbon nanofiber nonwovens represent a powerful class of materials with prospective application in filtration technology or as electrodes high surface area batteries, fuel cells, and supercapacitors. While new precursor‐to‐carbon conversion processes have been explored to overcome productivity restrictions for carbon fiber tows, alternatives the two‐step thermal polyacrylonitrile precursors into are absent. In this work, we develop continuous roll‐to‐roll stabilization process using an atmospheric pressure microwave plasma jet. We explore influence various plasma‐jet parameters on morphology nonwoven compare stabilized thermally samples scanning electron microscopy, differential calorimetry, infrared spectroscopy. show that non‐equilibrium can be twice productive conventional convection furnace, while producing comparable electrochemical performance.