Abstract
This study focused on the interface of highly porous activated carbon (AC) electrodes fabricated from banana leaves with a series of polymeric binders like polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC), along with examining their suitability in AC-based supercapacitor applications. The SEM analysis demonstrated that after the activation of carbon materials the number of pores significantly increased. During the study, a greater CV curve area was exhibited for the PVA binder than for PVDF and CMC. The specific capacitance values of the three binders were 170 Fg-1, 160 Fg-1, and 40 Fg-1, respectively, in GCD. Moreover, all of the binders' GCD curves were found to be quasi-symmetrical. However, the PVA binder showed a relatively better triangular shape and longer discharge time compared to CMC and PVDF. All these results demonstrate that PVA can be a better choice as a polymer binder in AC-based supercapacitors.
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