Performance of High Energy Density Symmetric Supercapacitor Based on Sputtered MnO2 Nanorods

Ashwani Kumar; Amit Sanger; Arvind Kumar; Yogendra Kumar Mishra; Ramesh Chandra

doi:10.1002/slct.201600757

Performance of High Energy Density Symmetric Supercapacitor Based on Sputtered MnO₂ Nanorods

Ashwani Kumar
, Amit Sanger
, Arvind Kumar
, Yogendra Kumar Mishra^*
, Ramesh Chandra

^*Corresponding author for this work

Indian Institute of Technology Roorkee
Christian-Albrechts-University of Kiel

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Here, we demonstrate the fabrication of binder free and very efficient supercapacitor electrodes based on MnO₂ nanorods on silver (Ag) coated porous anodic aluminum oxide (AAO) substrate in a very simple way by DC magnetron sputtering. The Ag coated porous AAO substrate acts as excellent current collector and also enhances high specific capacitance of MnO₂ up to ∼796 F/g. A symmetric supercapacitor device in form of α-MnO₂ nanorods/Ag/AAO electrode has been fabricated, characterized and its performance has been investigated in detail. The binder free supercapacitor device delivered a high capacitance (132 F/g), good cycling ability (95.52 % capacitance retention after 3000 cycles), high energy density (26.4 Wh/kg), and also a high power density (∼36 kW/kg at 6 Wh/kg) in a voltage range of 1.3 V. These observed excellent electrochemical performances of the present MnO₂ nanorods based device, suggest it tremendous potential as supercapacitor electrodes in energy storage applications.

Original language	English
Journal	ChemistrySelect
Volume	1
Issue number	13
Pages (from-to)	3885-3891
DOIs	https://doi.org/10.1002/slct.201600757
Publication status	Published - Aug 2016
Externally published	Yes

Funding

The authors would like to acknowledge the financial support from the University Grant Commission, India (Grant No. 7412–32-044). We are grateful to Dr. T. Shripathi at UGC-DAE Consortium for Scientific Research, Indore, India for XPS characterizations. The authors would like to thank Dr. G. K. Prasad at Defence Research and Development Establishment, Gwalior, India for BET surface area measurements. The authors acknowledge the use of Gamry instrument at Corrosion Lab, Metallurgical and Materials Engineering Department, IIT Roorkee. We thank Dr. Safir Ahmad Hashmi at Department of Physics & Astrophysics, University of Delhi, India, for his fruitful research discussions about electrochemistry.

Keywords

Binder free
DC sputtering
Energy storage
Metal oxide nanostructures
MnO nanorods
Supercapacitor

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Cite this

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title = "Performance of High Energy Density Symmetric Supercapacitor Based on Sputtered MnO2 Nanorods",

abstract = "Here, we demonstrate the fabrication of binder free and very efficient supercapacitor electrodes based on MnO2 nanorods on silver (Ag) coated porous anodic aluminum oxide (AAO) substrate in a very simple way by DC magnetron sputtering. The Ag coated porous AAO substrate acts as excellent current collector and also enhances high specific capacitance of MnO2 up to ∼796 F/g. A symmetric supercapacitor device in form of α-MnO2 nanorods/Ag/AAO electrode has been fabricated, characterized and its performance has been investigated in detail. The binder free supercapacitor device delivered a high capacitance (132 F/g), good cycling ability (95.52 \% capacitance retention after 3000 cycles), high energy density (26.4 Wh/kg), and also a high power density (∼36 kW/kg at 6 Wh/kg) in a voltage range of 1.3 V. These observed excellent electrochemical performances of the present MnO2 nanorods based device, suggest it tremendous potential as supercapacitor electrodes in energy storage applications.",

keywords = "Binder free, DC sputtering, Energy storage, Metal oxide nanostructures, MnO nanorods, Supercapacitor",

author = "Ashwani Kumar and Amit Sanger and Arvind Kumar and Mishra, \{Yogendra Kumar\} and Ramesh Chandra",

year = "2016",

month = aug,

doi = "10.1002/slct.201600757",

language = "English",

volume = "1",

pages = "3885--3891",

journal = "ChemistrySelect",

publisher = "Wiley",

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TY - JOUR

T1 - Performance of High Energy Density Symmetric Supercapacitor Based on Sputtered MnO2 Nanorods

AU - Kumar, Ashwani

AU - Sanger, Amit

AU - Kumar, Arvind

AU - Mishra, Yogendra Kumar

AU - Chandra, Ramesh

PY - 2016/8

Y1 - 2016/8

N2 - Here, we demonstrate the fabrication of binder free and very efficient supercapacitor electrodes based on MnO2 nanorods on silver (Ag) coated porous anodic aluminum oxide (AAO) substrate in a very simple way by DC magnetron sputtering. The Ag coated porous AAO substrate acts as excellent current collector and also enhances high specific capacitance of MnO2 up to ∼796 F/g. A symmetric supercapacitor device in form of α-MnO2 nanorods/Ag/AAO electrode has been fabricated, characterized and its performance has been investigated in detail. The binder free supercapacitor device delivered a high capacitance (132 F/g), good cycling ability (95.52 % capacitance retention after 3000 cycles), high energy density (26.4 Wh/kg), and also a high power density (∼36 kW/kg at 6 Wh/kg) in a voltage range of 1.3 V. These observed excellent electrochemical performances of the present MnO2 nanorods based device, suggest it tremendous potential as supercapacitor electrodes in energy storage applications.

AB - Here, we demonstrate the fabrication of binder free and very efficient supercapacitor electrodes based on MnO2 nanorods on silver (Ag) coated porous anodic aluminum oxide (AAO) substrate in a very simple way by DC magnetron sputtering. The Ag coated porous AAO substrate acts as excellent current collector and also enhances high specific capacitance of MnO2 up to ∼796 F/g. A symmetric supercapacitor device in form of α-MnO2 nanorods/Ag/AAO electrode has been fabricated, characterized and its performance has been investigated in detail. The binder free supercapacitor device delivered a high capacitance (132 F/g), good cycling ability (95.52 % capacitance retention after 3000 cycles), high energy density (26.4 Wh/kg), and also a high power density (∼36 kW/kg at 6 Wh/kg) in a voltage range of 1.3 V. These observed excellent electrochemical performances of the present MnO2 nanorods based device, suggest it tremendous potential as supercapacitor electrodes in energy storage applications.

KW - Binder free

KW - DC sputtering

KW - Energy storage

KW - Metal oxide nanostructures

KW - MnO nanorods

KW - Supercapacitor

U2 - 10.1002/slct.201600757

DO - 10.1002/slct.201600757

M3 - Journal article

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