Carbon Encapsulated Ternary Mn−Ni−Co Oxide Nanoparticles as Electrode Materials for Energy Storage Applications. Issue 12 (7th October 2020)

• Record Type: Journal Article
• Authors: Heliso Dolla, Tarekegn; Lawal, Isiaka A.; Billing, Dave G.; Pruessner, Karin; Ndungu, Patrick
• Is Part Of: Electroanalysis. Volume 32:Issue 12(2020)
• Page Start: 2926
• Page End: 2935
• Publication Date: 2020-10-07
• Subjects: Ternary transition metal oxides -- carbon coating -- supercapacitors -- battery like storage -- *Current affiliation:; Electrochemical analysis -- Periodicals; Chemistry, Analytical -- Periodicals; Electrochemistry -- Periodicals; 543.4
• DOI: 10.1002/elan.202060294
• Languages: English
• ISSNs: 1040-0397

Abstract

Abstract: Ternary transition metal oxides are promising advanced materials for use as electrode components in electrochemical energy storage systems. However, low electronic/ionic conductivity hinder practical applications. In this study, ternary Mn−Ni−Co oxide nanoparticles were encapsulated in carbon nanosheets, to improve the electrical conductivity and surface area. When tested as supercapacitor electrodes, the materials exhibited specific capacity of 91.2 mAh g −1 at a current density of 1 A g −1 in 2 M KOH. Moreover, after 3000 cycles the composite achieved a specific capacity of 74.6 mAh g −1 at a current density of 6 A g −1 and high capacitance retention of 96.4 %. Abstract :