Nanoporous Carbon Electrodes Derived from Coffee Side Streams for Supercapacitors in Aqueous Electrolytes.

ABSTRACT: Coffee, as one of the most traded resources, generates a vast amount of biogenic by-products. Coffee silver skins (CSS), a side stream from the roasting process, account for about 4 wt.%. Despite the abundancy of CSS, possible routes to generate added value for broad applications are limited. Herein, we present an approach to use CSS as a precursor material for supercapacitor electrodes. KOH activated carbon (AC) was produced from CSS. The resulting AC-CSS was characterized by X-ray diffraction, gas sorption analysis, scanning electron microscopy, and Raman spectroscopy. The highly porous AC-CSS exposes a specific surface area of more than 2500 m² g^-1. Electrodes formed with AC-CSS were electrochemically characterized by performing cyclic voltammetry and galvanostatic

SUBMITTER: Selinger J 

PROVIDER: S-EPMC9370518 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature