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.
- Abdelaziz Gouda
- Alexandre Masson
- Clara Santato
