Critical Influence of Reduced Graphene Oxide Mediated Binding of M (M = Mg, Mn) with Co ions, Chemical Stability and Charge Storability Enhancements of Spinal-Type Hierarchical MCo2O4 Nanostructures

Critical Influence of Reduced Graphene Oxide Mediated Binding of M (M = Mg, Mn) with Co ions, Chemical Stability and Charge Storability Enhancements of Spinal-Type Hierarchical MCo2O4 Nanostructures

This paper reports that addition of reduced graphene oxide (rGO) in MgCo2O4 improves the binding of Mg with Co thereby minimizing magnesium dissolution in aqueous alkaline electrolytes and the resulting MgCo2O4/rGO electrodes offered impressive improvements in charge storage properties. An isostru...

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Main Authors: Krishnan, Syam G., Harilal, Midhun, Yar, Asfand, Vijayan, Bincy Lathakumary, Dennis, John Ojur, M. M., Yusoff, Rajan, Jose
Format: Article
Language:English
Published: Elsevier 2017
Subjects:
QC Physics
QD Chemistry
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://umpir.ump.edu.my/id/eprint/17865/
http://umpir.ump.edu.my/id/eprint/17865/
http://umpir.ump.edu.my/id/eprint/17865/
http://umpir.ump.edu.my/id/eprint/17865/1/MgCo2O4%20rGO.pdf
id ump-17865
recordtype eprints
spelling ump-178652018-07-27T01:29:47Z http://umpir.ump.edu.my/id/eprint/17865/ Critical Influence of Reduced Graphene Oxide Mediated Binding of M (M = Mg, Mn) with Co ions, Chemical Stability and Charge Storability Enhancements of Spinal-Type Hierarchical MCo2O4 Nanostructures Krishnan, Syam G. Harilal, Midhun Yar, Asfand Vijayan, Bincy Lathakumary Dennis, John Ojur M. M., Yusoff Rajan, Jose QC Physics QD Chemistry TK Electrical engineering. Electronics Nuclear engineering This paper reports that addition of reduced graphene oxide (rGO) in MgCo2O4 improves the binding of Mg with Co thereby minimizing magnesium dissolution in aqueous alkaline electrolytes and the resulting MgCo2O4/rGO electrodes offered impressive improvements in charge storage properties. An isostructural high performing material, MnCo2O4, is used as a benchmark material in this work. The Mg analogues stored >30% more charges than the Mn-analogues in the 3 M LiOH electrolyte despite the former's lower BET surface area; rGO modification further increased charge storage by >60% than the unmodified analogues. Electrochemical measurements show that a larger surface fraction of the Mg analogue is electrochemically active, irrespective of whether or not rGO is present, which arise from, typically for MgCo2O4/rGO, lower internal resistance, lower Warburg impedance, and lower charge transfer resistance than the other electrodes. Elsevier 2017-05-11 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/17865/1/MgCo2O4%20rGO.pdf Krishnan, Syam G. and Harilal, Midhun and Yar, Asfand and Vijayan, Bincy Lathakumary and Dennis, John Ojur and M. M., Yusoff and Rajan, Jose (2017) Critical Influence of Reduced Graphene Oxide Mediated Binding of M (M = Mg, Mn) with Co ions, Chemical Stability and Charge Storability Enhancements of Spinal-Type Hierarchical MCo2O4 Nanostructures. Electrochimica Acta, 243. pp. 119-128. https://doi.org/10.1016/j.electacta.2017.05.064 DOI: 10.1016/j.electacta.2017.05.064
repository_type Digital Repository
institution_category Local University
institution Universiti Malaysia Pahang
building UMP Institutional Repository
collection Online Access
language English
topic QC Physics
QD Chemistry
TK Electrical engineering. Electronics Nuclear engineering
spellingShingle QC Physics
QD Chemistry
TK Electrical engineering. Electronics Nuclear engineering
Krishnan, Syam G.
Harilal, Midhun
Yar, Asfand
Vijayan, Bincy Lathakumary
Dennis, John Ojur
M. M., Yusoff
Rajan, Jose
Critical Influence of Reduced Graphene Oxide Mediated Binding of M (M = Mg, Mn) with Co ions, Chemical Stability and Charge Storability Enhancements of Spinal-Type Hierarchical MCo2O4 Nanostructures
description This paper reports that addition of reduced graphene oxide (rGO) in MgCo2O4 improves the binding of Mg with Co thereby minimizing magnesium dissolution in aqueous alkaline electrolytes and the resulting MgCo2O4/rGO electrodes offered impressive improvements in charge storage properties. An isostructural high performing material, MnCo2O4, is used as a benchmark material in this work. The Mg analogues stored >30% more charges than the Mn-analogues in the 3 M LiOH electrolyte despite the former's lower BET surface area; rGO modification further increased charge storage by >60% than the unmodified analogues. Electrochemical measurements show that a larger surface fraction of the Mg analogue is electrochemically active, irrespective of whether or not rGO is present, which arise from, typically for MgCo2O4/rGO, lower internal resistance, lower Warburg impedance, and lower charge transfer resistance than the other electrodes.
format Article
author Krishnan, Syam G.
Harilal, Midhun
Yar, Asfand
Vijayan, Bincy Lathakumary
Dennis, John Ojur
M. M., Yusoff
Rajan, Jose
author_facet Krishnan, Syam G.
Harilal, Midhun
Yar, Asfand
Vijayan, Bincy Lathakumary
Dennis, John Ojur
M. M., Yusoff
Rajan, Jose
author_sort Krishnan, Syam G.
title Critical Influence of Reduced Graphene Oxide Mediated Binding of M (M = Mg, Mn) with Co ions, Chemical Stability and Charge Storability Enhancements of Spinal-Type Hierarchical MCo2O4 Nanostructures
title_short Critical Influence of Reduced Graphene Oxide Mediated Binding of M (M = Mg, Mn) with Co ions, Chemical Stability and Charge Storability Enhancements of Spinal-Type Hierarchical MCo2O4 Nanostructures
title_full Critical Influence of Reduced Graphene Oxide Mediated Binding of M (M = Mg, Mn) with Co ions, Chemical Stability and Charge Storability Enhancements of Spinal-Type Hierarchical MCo2O4 Nanostructures
title_fullStr Critical Influence of Reduced Graphene Oxide Mediated Binding of M (M = Mg, Mn) with Co ions, Chemical Stability and Charge Storability Enhancements of Spinal-Type Hierarchical MCo2O4 Nanostructures
title_full_unstemmed Critical Influence of Reduced Graphene Oxide Mediated Binding of M (M = Mg, Mn) with Co ions, Chemical Stability and Charge Storability Enhancements of Spinal-Type Hierarchical MCo2O4 Nanostructures
title_sort critical influence of reduced graphene oxide mediated binding of m (m = mg, mn) with co ions, chemical stability and charge storability enhancements of spinal-type hierarchical mco2o4 nanostructures
publisher Elsevier
publishDate 2017
url http://umpir.ump.edu.my/id/eprint/17865/
http://umpir.ump.edu.my/id/eprint/17865/
http://umpir.ump.edu.my/id/eprint/17865/
http://umpir.ump.edu.my/id/eprint/17865/1/MgCo2O4%20rGO.pdf
first_indexed 2023-09-18T22:24:56Z
last_indexed 2023-09-18T22:24:56Z
_version_ 1777415903691931648

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