Influence of sintering temperature on the structural and morphological performance of CoMoO4

Abstract

CoMoO 4 nanoscale materials were synthesized by a facile coprecipitation method and annealed at different temperatures with significant alteration of morphologies. The obtained CoMoO 4 materials were characterized by X ray diffraction (XRD), FTIR spectroscopy, thermogravimetry and differential scanning calorimetry (TG DSC) and scanning electron microscopy (SEM).

Role of polymeric surfactant in the synthesis of cobalt molybdate nanospheres for hybrid capacitor applications

“…The synthesized CoMoO 4 were analysed for crystal structure and phase determination using X-ray diffraction (XRD) technique. The X-ray diffraction (XRD) patterns of both the pure and modified (F127 added) CoMoO 4 samples are in good agreement with the reported values [18] and Powder Diffraction File (PDF) card number 21-0868 indicating the formation of single phase crystalline structure [5,6,19,20]. The peaks in the region 700-950 cm -1 corresponds to Mo-O bonds while the peak at 1400 cm -1 is related to MoO 4 .…”

“…3B), peaks observed at 710, 760, 855, 950, 1400, 1600, 2220, 2354 and 3350 cm À1 are in good agreement with the reported values for CoMoO 4 . 5,6,19,20 The peaks in the region 700-950 cm À1 correspond to Mo-O bonds, while the peak at 1400 cm À1 is related to MoO 4 . To further explore the adsorption characteristics of the modied CoMoO 4 , the spectra obtained for the mid infra-red region were compared with that of pure CoMoO 4 .…”

“…2 Due to these specications, much effort has been devoted to investigating the possibility of using metal molybdates in energy storage devices. [6][7][8][9][16][17][18][19][20] Among various molybdate materials, MnMoO 4 / CoMoO 4 heterostructured nanowires showed a specic capacitance of 187 F g À1 at a current density of 1 A g À1 , with excellent reversibility aer 1000 cycles. These nanowires were reported to have a larger surface area and defects that promoted good electron transport and efficient electrochemical reactions.…”

“…Due to these specifications, a lot of efforts have been made to study the possibility of using metal molybdates in energy storage devices [6][7][8][9], [16][17][18][19][20]. Among various molybdate materials, MnMoO 4 /CoMoO 4 heterostructured nanowires showed specific capacitance of 187 F g -1 at current density of 1 A g -1 with an excellent reversibility after 1000 cycles.…”

Tuning the Redox Properties of the Nanostructured CoMoO4 Electrode: Effects of Surfactant Content and Synthesis Temperature

“…Recently,m etal molybdates such as CoMoO 4 [11] and NiMoO 4 [16] have demonstrated enhanced electrochemical performance over the oxide and phosphate counterparts. Cobalt molybdate (CoMoO 4 )n anoparticles [18] synthesised by meanso f ac o-precipitation method were reported to have an effect on the particle size for samples annealed at elevatedt emperatures. In another study,C oMoO 4 ·9H 2 On anorods [19] synthesised by means of ah ydrothermal method had as pecific capacitance of 326 Fg À1 at 5mAcm À2 .T he high capacitance was attributed to the rapid transportationo fi onsi nto the bulk of the one-dimensional material.…”