Performances of Co2+-Substituted NiMoO4 Nanorods in a Solid-State Hybrid Supercapacitor

Sengodan Prabhu; Moorthy Maruthapandi; Arulappan Durairaj; Srinivasan Arun Kumar; John H.T. Luong; Rajendran Ramesh; Aharon Gedanken

doi:10.1021/acsaem.2c03067

Performances of Co²⁺-Substituted NiMoO₄ Nanorods in a Solid-State Hybrid Supercapacitor

Sengodan Prabhu, Moorthy Maruthapandi, Arulappan Durairaj, Srinivasan Arun Kumar, John H.T. Luong, Rajendran Ramesh, Aharon Gedanken

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

A hydrothermal method was conducted to synthesize Ni_(1−α)Co_(α)MoO₄ (α = 0, 0.1, 0.3, and 0.5 M) nanorods, which were proven as excellent electrode materials in a hybrid supercapacitor. Their electrochemical properties were also dependent on the Ni/Co ratio as demonstrated by different electrochemical techniques. Ni_0.5Co_0.5MoO₄ (α = 0.5 M) offered specific capacity (Q_g) = 354 Cg^-1@1 Ag^-1, a remarkable specific capacity with a notable retention capacity of 92% after 8000 repeated cycles at 10 Ag^-1. Ni_0.5Co_0.5MoO₄ with a high surface area outperformed the mono-metallic (NiMoO₄) and bimetallic (Ni_0.9Co_0.1MoO₄ and Ni_0.7Co_0.3MoO₄) nanostructures. The hybrid supercapacitor (Ni_0.5Co_0.5MoO₄//activated carbon) delivered a maximum Q_cell of 53 Cg^-1 at 1 Ag^-1 with an energy density of 16.2

Original language	English
Pages (from-to)	1321-1331
Number of pages	11
Journal	ACS Applied Energy Materials
Volume	6
Issue number	3
DOIs	https://doi.org/10.1021/acsaem.2c03067
State	Published - 13 Feb 2023

Bibliographical note

Publisher Copyright:
© 2023 American Chemical Society.

Keywords

cyclic stability
electrical conductivity
hybrid supercapacitor
transition metal molybdate

Access to Document

10.1021/acsaem.2c03067

Cite this

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title = "Performances of Co2+-Substituted NiMoO4 Nanorods in a Solid-State Hybrid Supercapacitor",

abstract = "A hydrothermal method was conducted to synthesize Ni(1−α)Co(α)MoO4 (α = 0, 0.1, 0.3, and 0.5 M) nanorods, which were proven as excellent electrode materials in a hybrid supercapacitor. Their electrochemical properties were also dependent on the Ni/Co ratio as demonstrated by different electrochemical techniques. Ni0.5Co0.5MoO4 (α = 0.5 M) offered specific capacity (Qg) = 354 Cg-1@1 Ag-1, a remarkable specific capacity with a notable retention capacity of 92% after 8000 repeated cycles at 10 Ag-1. Ni0.5Co0.5MoO4 with a high surface area outperformed the mono-metallic (NiMoO4) and bimetallic (Ni0.9Co0.1MoO4 and Ni0.7Co0.3MoO4) nanostructures. The hybrid supercapacitor (Ni0.5Co0.5MoO4//activated carbon) delivered a maximum Qcell of 53 Cg-1 at 1 Ag-1 with an energy density of 16.2",

keywords = "cyclic stability, electrical conductivity, hybrid supercapacitor, transition metal molybdate",

author = "Sengodan Prabhu and Moorthy Maruthapandi and Arulappan Durairaj and {Arun Kumar}, Srinivasan and Luong, {John H.T.} and Rajendran Ramesh and Aharon Gedanken",

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AU - Durairaj, Arulappan

AU - Arun Kumar, Srinivasan

AU - Luong, John H.T.

AU - Ramesh, Rajendran

AU - Gedanken, Aharon

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