Enhancing activated carbon supercapacitor electrodes using sputtered Cu-doped BiFeO₃ thin films.

ABSTRACT: This work describes the fabrication of a composite supercapacitor electrode made of Cu-doped BiFeO 3 (Cu-BFO) films on an activated carbon (AC) electrode using radio-frequency (RF) magnetron sputtering. To prevent exfoliation of Cu-BFO and AC upon immersion in an electrolyte, the nickel foam sandwiching electrode technique was introduced. The Cu-BFO films significantly enhanced electrochemical properties, increasing specific capacitance by up to 151% compared to that of an AC electrode. This was attributed to Faradaic reactions and specific surface area in the Cu-BFO/AC electrode. The highest specific capacitance achieved was 169 F g-1 at 0.5 A g-1 , and cycling stability retention was 93.12% after 500 cycles. However, the remaining percentage of the specific capacitance decreased differen

SUBMITTER: Tanapongpisit N 

PROVIDER: S-EPMC11561312 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature