Field emission properties of spinel ZnCo₂O₄microflowers

Abstract

Spinel ZnCo2O4 microflowers were synthesized by a facile route and their field emission properties were studied in detail. They showed intriguing Field emission performance in terms of good field-enhancement factor and stability.

Electrochemically Exfoliated Black Phosphorus Nanosheets – Prospective Field Emitters

“…[2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] For a given material, the FE performance can be improved by increasing the aspect ratio (lateral dimension/thickness), making arrays of material, or decorating the nano/micro structures with material having a lower work function. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] The field enhancement factor (β) depends upon the geometry of the emitter and the spatial distribution of the emitting centers. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]…”

Spinel NiCo₂O₄ Nanorods for Supercapacitor Applications

“…When nickel precursor and cobalt precursor are dissolved in above aqueous solution containing urea, nickel ions and cobalt ions get nucleated in the presence of urea to form self-assembled growth patterns (Xiao and Yang, 2011;Ratha et al, 2015). Similar synthesis procedure was carried out at different temperatures, i.e., 90°C, 120°C, 150°C and180°C.…”

“…Among different MTMOs, nickel cobalt oxide (NiCo 2 O 4 ) is currently emerging as one of the most intriguing material in the field of super capacitors (Dubal et al, 2015). It belongs to the group of normal spinels similar to MgAl 2 O 4 , ZnCr 2 O 4 , ZnAl 2 O 4 and ZnCo 2 O 4 etc., (Ratha et al, 2015) and has a space symmetry group Garg et al, 2014). Ternary nickel cobalt oxide (NiCo 2 O 4 ) is inexpensive, non-toxic, eco-friendly and has different morphologies with impressive supercapacitive properties compared to its binary metal oxides counterparts (Dubal et al, 2015).…”

Self-assembled flower-like ZnCo2O4hierarchical superstructures for high capacity supercapacitors

“…Detailed morphology of finally obtained ZCO sample was examined by FESEM along with energy dispersive X-ray spectroscopy (EDS). 25 The electrochemical studies were performed by both cyclic voltammetry and charge-discharge measurements in 2M aqueous KOH solution with the help of a three electrode configuration. 1a-b) elucidate entanglement of large and thin edged ZCO nanosheets.…”

“…These two dimensional materials have thus found some direct applications in such areas. 25 Detailed electrochemical studies were performed in order to investigate the potential application of ZCO as supercapacitor electrodes. [11][12][13] Graphene along with its two dimensional analogues and other heterostructures (due to their hybridisation) have been studied intensively for their possible application as electrode materials for supercapacitors.…”