Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Fabrication of Eco-Friendly Solid-State Symmetric Ultracapacitor Device Based on Co-Doped PANI/GO Composite
oleh: Hajera Gul, Anwar-ul-Haq Ali Shah, Salma Bilal
Format: | Article |
---|---|
Diterbitkan: | MDPI AG 2019-08-01 |
Deskripsi
An eco-friendly solid-state symmetric ultracapacitor (Uc) device was fabricated using a polyaniline graphene oxide composite co-doped with sulfuric acid (H<sub>2</sub>SO<sub>4</sub>) and dodecyl benzene sulfonic acid (DBSA) or camphor sulfonic acid (CSA), as electrode material utilizing gold sheets as current collectors. The device showed specific capacitance value of 150 F/g at 1 A/g current density, with a capacitance retention value of 93.33% at higher current density (10 A/g), indicating a high rate capability. An energy density of 15.30 Whkg<sup>−1</sup> with a power density of 1716 Wkg<sup>−1</sup> was obtained at the current density of 1 A/g. The values of areal capacitance, power density, and energy density, achieved at the current density of 5 mAcm<sup>−2</sup>, were 97.38 mFcm<sup>−2</sup>, 9.93 mWhcm<sup>−2</sup>, and 1.1 Wcm<sup>−2</sup>, respectively. Additionally, the device showed very low solution and charge transfer resistance (0.885 Ω and 0.475 Ω, respectively). A device was also fabricated utilizing copper as current collector; however, a lower value of specific capacitance (82 F/g) was observed in this case.