Pseudocapacitance electrode and asymmetric supercapacitor based on biomass juglone/activated carbon composites.

ABSTRACT: A novel electrode material incorporating renewable biomass-derived juglone biomolecules with commercial activated carbon (AC) granules has been through simple ultrasonic dispersion and dissolution-recrystallization and was found to exhibit good electrochemical performance. The juglone biomolecules are prepared by an ultrasound-assisted extraction method from abandoned walnut peel, which decreases pollution and increases economic efficiency. Through the dissolution-recrystallization process with AC, a hierarchical structure with nanosized juglone particles was obtained, and the AC particles worked as scaffolding to strengthen the slight biomolecules, thus expanding the active sites and effectively reducing the dissolution of the active materials. The pseudocapacitance fading mechanism was i

SUBMITTER: He X 

PROVIDER: S-EPMC9072198 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature