Sustainable synthesis of organic framework-derived ZnO nanoparticles for fabrication of supercapacitor electrode

Facile ZnO-based nanomaterial and its fabrication as a supercapacitor electrode: synthesis, characterization and electrochemical studies

“…Recently, we synthesized ZnO NPs using the organic fuel prepared from leaf extract of Euphorbia cognata Boiss, and evaluated its possibility for energy storage devices. 5 Phyto-mediated ZnO NPs revealed a specic capacitance of 86 F g À1 at 2 mV s À1 . 5 Then, we have synthesized and reported the phyto-assisted ZnO-Co 3 O 4 as an electrode material for supercapacitors, and this electrode material showed a capacitance of 165 F g À1 .…”

“…5 Phyto-mediated ZnO NPs revealed a specic capacitance of 86 F g À1 at 2 mV s À1 . 5 Then, we have synthesized and reported the phyto-assisted ZnO-Co 3 O 4 as an electrode material for supercapacitors, and this electrode material showed a capacitance of 165 F g À1 . 1 Another, ZnObased electrode material, ZnO@NiO, was synthesized via the same biogenic route using the leaf extract of Euphorbia cognata Boiss.…”

“…The current era of advancement in technology has greatly increased the demand of electrochemical advanced nanomaterials, such as supercapacitors, batteries, and fuel cells. [1][2][3][4][5][6] The performance of these devices critically depends on the ow of electrons or conductivity of the electrode material. 6,9,[15][16][17][18] Therefore, numerous electrode materials have been intensively investigated among the scientic community to enhance the performance of electrodes.…”

“…3 Thus, the reported investigations vividly showed that the leaf extract of Euphorbia cognata Boiss (hereaer written as ECBE) was a signicant reagent for the synthesis of metal oxides nanomaterials. 1,3,5,21,22 Motivated from the success of pervious projects of ECBE-based nanomaterials, we have employed the same ECBE-based synthesis strategy to synthesize a facile nanomaterial of ZnO@PdO/Pd without using any chemical reagent. The ZnO-based nanomaterial possessed high crystallinity, and thus possessed good supercapacitive properties.…”

“…The ZnO-based nanomaterial possessed high crystallinity, and thus possessed good supercapacitive properties. [1][2][3][4][5] In this study, supercapacitive properties of the facile ZnO@PdO/ Pd nanomaterial have been investigated by galvanostatic charge-discharge (GCD), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) techniques in a non-toxic and lower cost aqueous electrolyte, and it showed considerable specic capacitance.…”