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Green synthesis of in situ electrodeposited rGO/MnO2 nanocomposite for high energy density supercapacitors.

ABSTRACT: This paper presents the preparation of in situ electrodeposited rGO/MnO2 nanocomposite as a binder-free electrode for supercapacitor application. The work describes and evaluates the performance of prepared electrode via green and facile electrodeposition technique of in situ rGO/MnO2-glucose carbon nanocomposites. The carbon content in the composite electrode increased after GO and D (+) glucose solution has been added in the deposition electrolyte. This study found that a suitable concentration of D (+) glucose in the deposition electrolyte can slow down the nucleation process of MnO2 particles and lead to uniform and ultrathin nanoflakes structure. The optimize electrode exhibited low transfer resistance and resulted on excellent electrochemical performance in three electrolyte systems viz. Na2SO4, KOH and KOH/K3Fe(CN)6 redox electrolytes. The optimum energy density and power density were 1851?Whkg(-1) and 68?kWkg(-1) at current density of 20?Ag(-1) in mixed KOH/K3Fe(CN)6 electrolyte.

SUBMITTER: Rusi

PROVIDER: S-EPMC4633667 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature

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Green synthesis of in situ electrodeposited rGO/MnO2 nanocomposite for high energy density supercapacitors.

Rusi Majid S R SR

Scientific reports 20151105

This paper presents the preparation of in situ electrodeposited rGO/MnO2 nanocomposite as a binder-free electrode for supercapacitor application. The work describes and evaluates the performance of prepared electrode via green and facile electrodeposition technique of in situ rGO/MnO2-glucose carbon nanocomposites. The carbon content in the composite electrode increased after GO and D (+) glucose solution has been added in the deposition electrolyte. This study found that a suitable concentratio ...[more]

PMID: 26537363

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