Nanoporous carbon derived from agro-waste pineapple leaves for supercapacitor electrode

Abstract

By using KOH as the chemical activating agent in the synthesis, the activated carbon derived from pineapple leaf fiber (PALF) was prepared. The structure, morphology, and the surface functional groups of the as-prepared activated carbon were investigated using x-ray diffraction, field emission scanning electron microscope equipped with energy dispersive x-ray spectroscopy, and x-ray photoelectron spectroscopy. The electrochemical behavior and performance of the as-synthesized activated carbon electrode were measured using the cyclic voltammetry and the electrochemical impedance spectroscopy in 1 M Na2SO4 electrolyte solution in three-electrode setup. The activated carbon electrode exhibited the specific capacitance of 131.3 F g−1 at a scan rate of 5 mV s−1 with excellent cycling stability. The capacitance retention after 1000 cycles was about 97% of the initial capacitance at a scan rate of 30 mV s−1. Given these good electrochemical properties along with the high abundance of PALF, this activated carbon electrode has the potential to be one of the materials for future large-scale production of the electrochemical capacitors.

Nano-Structured Carbon: Its Synthesis from Renewable Agricultural Sources and Important Applications

“…Nanocarbon derived from pineapple leaf by using chemical activating agents such as KOH is used as electrochemical capacitors (ECs) or supercapacitors (SCs) as energy storage devices that can be potentially combined with renewable energy technology. SCs devices are used in long-life power storage capacitors with a higher power density ( Figure 15 ) [ 117 ]. Carbon dots (CDs) are an example of nanocarbon.…”

Monolith solid porous carbon approach derived from Garcinia Xanthochymus for high-performance electrode material of supercapacitor

“…Several previous studies have synthesized porous activated carbon based on organic waste such as activated carbon from pitaya peel [9], cow dung [10], pineapple leaves [11,12], jackfruit peel [13], sago waste [14], American poplar fruit [15], paulownia flower [16], Terminalia catappa leaves [17], ginger [18], and etc. In addition, presented an effective and economical study of the synthesis of jujube fruit-based activated carbon through chemical activation of NaOH [19].…”

Comparison of acid exfoliators in carbon nanosheets synthesis from stinging nettle (Urtica dioica) for electrochemical applications

“…The preparation of nanostructured materials from waste materials has drawn tremendous interest in recent years 16 , 17 . Many researchers have demonstrated that carbon materials for use as adsorbent or electronic materials can be synthesized by potassium hydroxide from low-cost waste materials such as rice husk 18 , Acai stone 19 , corncob 20 , pine cone flower 21 , banana peel 22 , water hyacinth 23 , waste coffee grounds 24 , pineapple leaf fibre 25 , bamboo 26 , wood sawdust 27 , peanut shell 28 – 30 , jute 31 , gulfweed 32 and pomelo peel 33 . Nettle ( Urtica dioica ) is a plant widely distributed in many areas of Asia, Europe, America and Africa 34 .…”