Biosourced quinones for high-performance environmentally benign electrochemical capacitors via interface engineering

Abstract

Biosourced and biodegradable organic electrode materials are investigated for environmentally benign energy storage, but their performance at higher current density is often poor. Here, the authors construct electrodes with quinone-based species from Sepia melanin and tannins on treated carbon paper and observe electrode capacitance as high as 1355 mF cm−2 at current densities up to 10 A g−1.