Effect of thermal annealing on physiochemical properties of spray-deposited β-MnO2 thin films for electrochemical supercapacitor

High surface area MnO2 catalysts prepared by a metastable aqueous-aqueous interface method and their catalytic oxidation activity

“…The specific surface area is one of the significant parameters for the redox reaction during the charge storage mechanism [20]. Herein, specific surface area and pore size analysis was expressed through the nitrogen adsorption-desorption isotherm curves (Figure 1).…”

Tuning the morphology of manganese oxide nanostructures for obtaining both high gravimetric and volumetric capacitance

“…The C s_m value in the thin film structure (205 F g À1 at 5 mV s À1 ) in this work was similar to the reported value (298 F g À1 at 0.5 mA cm À2 ). 74 The most astonishing result was obtained from the sample with a perpendicular columnar structure, with the maximum C s_m value of 976 F g À1 and a C s_V value of 830 F cm À3 at 5 mV s À1 . Although none of the values were the best as shown in Fig.…”

Coconut-Water-Mediated Carbonaceous Electrode: A Promising Eco-Friendly Material for Bifunctional Water Splitting Application

“…Among them, spraying a direct solution over a hot substrate for obtaining a film-type electrode is a cost-effective, safe, and uncomplicated synthesis technique to operate, by which the structure, phase, and morphology can be easily controlled by regulating various parameters such as, spray rate, operating temperature, flow rate, deposition time, etc. 23 , 24 …”

“…The biocarbon prepared using such biomass resources offers (i) relatively low internal resistance, (ii) superior electrical conductivity, (iii) outstanding cyclic stability, (iv) admirable chemical stability, and (v) excellent reaction kinetics. − Numerous synthesis techniques, i.e., hydrothermal technique, chemical bath deposition (CBD), electrodeposition, successive ionic layer adsorption and reaction (SILAR), and spray pyrolysis, were reported to prepare various biocarbon nanostructures in the form of a film/powder. Among them, spraying a direct solution over a hot substrate for obtaining a film-type electrode is a cost-effective, safe, and uncomplicated synthesis technique to operate, by which the structure, phase, and morphology can be easily controlled by regulating various parameters such as, spray rate, operating temperature, flow rate, deposition time, etc. , …”

“…17 hot substrate for obtaining a film-type electrode is a costeffective, safe, and uncomplicated synthesis technique to operate, by which the structure, phase, and morphology can be easily controlled by regulating various parameters such as, spray rate, operating temperature, flow rate, deposition time, etc. 23,24 Prabu et al reported the catalytic activity of activated carbon sheets prepared from bakery food waste toward OER and HER. The activated carbon-sheet electrode demonstrated both OER and HER activities with low overpotentials of 340 mV (at 10 mA cm −2 ) and 380 mV (at −10 mA cm −2 ), with corresponding Tafel slopes of 43 and 85 mV dec −1 .…”