Alloying normal and inverse spinel (Zn–Co ferrite) nanostructures via direct precursor pyrolysis for enhanced supercapacitance and water splitting

Simple item page
dc.contributor.authorMalima, Nyemaga Masanje
dc.contributor.authorKhan, Malik Dilshad
dc.contributor.authorChoi, Jonghyun
dc.contributor.authorGupta, Ram K.
dc.contributor.authorRevaprasadu, Neerish
dc.date.accessioned2023-05-23T08:39:26Z
dc.date.available2023-05-23T08:39:26Z
dc.date.issued2023
dc.descriptionAbstract. Full text article available at https://doi.org/10.1016/j.matchemphys.2023.127770en_US
dc.description.abstractThe nanocrystals comprising of multiple redox-active cations are generally proficient electrocatalysts for renewable and sustainable energy applications. Ferrites have rich redox chemistry and crystallographically, they can be classified into normal spinel structures or inverse spinel structures, depending on the type of occupancy at tetrahedral and octahedral sites. Herein, taking advantage of the simplicity and environmental benignity of the solventless method, a series of mixed inverse and normal spinel nanocatalysts (Co1-xZnxFe2O4 (0 = x ≤ 1)) have been successfully synthesized and tested for supercapacitance and overall water splitting. The p-XRD and EDX analyses confirmed the successful nucleation of CoFe2O4 and ZnFe2O4 to form monophasic Co1-xZnxFe2O4 solid solutions over the entire composition range. The solid solutions with composition Co0·4Zn0·6Fe2O4 demonstrated higher discharge time, indicating higher specific capacitance of the material than other electrode compositions. The Co0·8Zn0·2Fe2O4 showed relatively low overpotentials of 317 mV to afford the current density of 10 mA/cm2 for oxygen evolution reaction (OER), while Co0·6Zn0·4Fe2O4 exhibited an overpotential of 169 mV for hydrogen evolution reaction (HER), outperforming most of the electrocatalysts reported in the literature. More impressively, such solid solutions demonstrated negligible deviation between the first and the 1 k cycles, suggesting high durability for the electrolysis of water.en_US
dc.identifier.citationMalima, N. M., Khan, M. D., Choi, J., Gupta, R. K., & Revaprasadu, N. (2023). Alloying normal and inverse spinel (Zn–Co ferrite) nanostructures via direct precursor pyrolysis for enhanced supercapacitance and water splitting. Materials Chemistry and Physics, (302),1 127-770.en_US
dc.identifier.otherDOI:https://doi.org/10.1016/j.matchemphys.2023.127770
dc.identifier.urihttp://hdl.handle.net/20.500.12661/3829
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectAlloying normalen_US
dc.subjectInverse spinelen_US
dc.subjectNanostructuresen_US
dc.subjectPrecursor pyrolysisen_US
dc.subjectWater splittingen_US
dc.subjectSupercapacitanceen_US
dc.titleAlloying normal and inverse spinel (Zn–Co ferrite) nanostructures via direct precursor pyrolysis for enhanced supercapacitance and water splittingen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Nyemaga Malima - Alloying normal and inverse spinel.pdf
Size:
119.04 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles