Cross-linked single-walled carbon nanotube aerogel electrodes via reductive coupling chemistry

Abstract

Single-walled carbon nanotube (SWCNT) anions can be cross-linked by a dielectrophile to form covalent, carbon-bonded organogels. Freeze-drying produces cryogels with low density (2.3 mg cm⁻³), high surface area (766 m² g⁻¹), and high conductivity (9.4 S m⁻¹), showing promise as supercapacitor electrodes. Counterion concentration controls debundling, grafting ratio, as well as all the resulting properties.