Experimental and theoretical spectroscopic studies of branchlet-like SrCO3 superarchitecture

Divya, A.; Mathavan, T.; Arunarajeswari, P.; Archana, J.; Hayakawa, Y.; Tzeli, Demeter; Benial, A. Milton Franklin

doi:10.1063/1.4947799

Cited by 1 publication

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The weak band located at around 608 cm -1 is also accounted for F 2g mode of Co 3 O 4 (Cheng et al 1998). The two highintensity Raman modes at 181 (caused by in-plane bending) and 700 cm -1 [comes from librational motion of the (CO 3 ) 2-] are attributed to the vibration bands of SrCO 3 (Divya 2016). In addition, two significant bands were also observed at 1359 and 1595 cm -1 , which are assigned to the D-and G-bands of carbon nanofibers, respectively.…”

Section: Resultsmentioning

confidence: 94%

Applicable anode based on Co3O4–SrCO3 heterostructure nanorods-incorporated CNFs with low-onset potential for DUFCs

et al. 2017

View full text Add to dashboard Cite

Besides the high-current density, lower onset potential of urea electrooxidation is key parameter which influences the direct urea fuel cell performance. In the present article, low-onset potential has been reported for nickel-free (NF) electrocatalyst in urea electrooxidation. The nickel-free electrocatalyst: Co 3 O 4-SrCO 3 heterostructure nanorods-incorporated carbon nanofibers (CNFs) were synthesized by electrospinning technique, followed by calcination of electrospun mat composed of strontium acetate, cobalt acetate, and poly(vinyl alcohol) sol-gel in inert environment at 750°C. Physiochemical characterizations confirmed the formation of Co 3 O 4-SrCO 3 heterostructure nanorods-incorporated CNFs. The electrochemical activity of resultant nickel-free electrocatalyst toward the electrooxidation of urea in alkaline medium is evaluated using cyclic voltammetry measurements (CV). Co 3 O 4-SrCO 3 heterostructure nanorods-incorporated CNFs reveals high-current density of 21.33 mA/cm 2 at low-fuel concentration. Notably, the low-onset potential has been observed, showing a good application prospect in direct urea fuel cells.

show abstract

Section: Resultsmentioning

confidence: 94%