High-performance Bi₂O₃-NC anodes through constructing carbon shells and oxygen vacancies for flexible battery-supercapacitor hybrid devices.

ABSTRACT: Battery-supercapacitor hybrid (BSH) devices generally provide both high energy density and power density, but usually suffer from the serious electrochemical kinetics mismatch of cathodes and anodes mainly due to complex faradaic reactions of the unmatched battery-type electrodes used for charge storage, which inevitably degrade the rate capability and power density. To solve this, we propose a facile and efficient strategy of constructing carbon shells and oxygen vacancies. Oxygen-deficient Bi₂O₃ nanoflakes stabilized by N-doped carbon and supported on graphite fibers (GF@Bi₂O₃-NCs) were prepared to improve specific capacity, rate capability and cycling stability. The N/S-codoped carbon aerogels supported on graphite fibers (GF@NS-CAGs) provided

SUBMITTER: Yang C 

PROVIDER: S-EPMC9418917 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature