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CuO embedded β-Ni(OH)2 nanocomposite as advanced electrode materials for supercapacitors.

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Title: CuO embedded β-Ni(OH)2 nanocomposite as advanced electrode materials for supercapacitors.
Authors: Ravikumar, C.R.1 ravicr128@gmail.com, Kumar, M.R. Anil1, Nagaswarupa, H.P.1, Prashantha, S.C.1, Bhatt, Aarti S.2, Santosh, M.S.3,4 santoshgulwadi@gmail.com, Kuznetsov, Denis4
Source: Journal of Alloys & Compounds. Mar2018, Vol. 736, p332-339. 8p.
Subjects: Nanocomposite materials, Copper oxide, Electrodes, Supercapacitors, Oxygen evolution reactions
Abstract: A new nanocomposite has been prepared embedding CuO nanoparticles as an additive into grafted β-nickel hydroxide electrode and their electrochemical performance in KOH electrolyte have been investigated. β-nickel hydroxide (β-Ni(OH) 2 ) has been prepared by a simple precipitation method. Ni(OH) 2 /NiOOH, the main active materials in the pasted nickel electrode have been prepared using nickel mesh in the form of current collector. A study on the electrochemical performances of the pure β-Ni(OH) 2 and CuO added β-Ni(OH) 2 electrodes in 6.0 M KOH electrolyte has revealed that CuO embedded β-Ni(OH) 2 displays much higher specific capacitance and better cyclability than pure β-Ni(OH) 2 . In fact, the addition of CuO improves the reversibility of the electrode by reducing the anodic (E pa ) and cathodic (E pc ) peak potential difference and also increases the separation of the oxygen evolution (E OE ) and anodic (E pa ) peak potential. Further, CuO nanoparticles grafted β-Ni(OH) 2 electrode displays elevated proton diffusion co-efficient (D) and inferior charge transfer resistance. Specifically, CuO embedded β-Ni(OH) 2 exhibits 855 F g −1 at 5 Ag -1 and good cycling stability as it maintains more than 90% of its original capacitance even after 3000 cycles. The enhancement may be attributed to the nanosize of CuO and chemical interaction between CuO and β-Ni(OH) 2 . These results are expected to offer new insight to future researchers who wish to work on the development of novel electrode materials for energy storage applications. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Alloys & Compounds is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 126897046
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  Data: CuO embedded β-Ni(OH)2 nanocomposite as advanced electrode materials for supercapacitors.
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  Data: <searchLink fieldCode="AR" term="%22Ravikumar%2C+C%2ER%2E%22">Ravikumar, C.R.</searchLink><relatesTo>1</relatesTo><i> ravicr128@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Kumar%2C+M%2ER%2E+Anil%22">Kumar, M.R. Anil</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Nagaswarupa%2C+H%2EP%2E%22">Nagaswarupa, H.P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Prashantha%2C+S%2EC%2E%22">Prashantha, S.C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bhatt%2C+Aarti+S%2E%22">Bhatt, Aarti S.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Santosh%2C+M%2ES%2E%22">Santosh, M.S.</searchLink><relatesTo>3,4</relatesTo><i> santoshgulwadi@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Kuznetsov%2C+Denis%22">Kuznetsov, Denis</searchLink><relatesTo>4</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Alloys+%26+Compounds%22">Journal of Alloys & Compounds</searchLink>. Mar2018, Vol. 736, p332-339. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Nanocomposite+materials%22">Nanocomposite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Copper+oxide%22">Copper oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Electrodes%22">Electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Supercapacitors%22">Supercapacitors</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen+evolution+reactions%22">Oxygen evolution reactions</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A new nanocomposite has been prepared embedding CuO nanoparticles as an additive into grafted β-nickel hydroxide electrode and their electrochemical performance in KOH electrolyte have been investigated. β-nickel hydroxide (β-Ni(OH) 2 ) has been prepared by a simple precipitation method. Ni(OH) 2 /NiOOH, the main active materials in the pasted nickel electrode have been prepared using nickel mesh in the form of current collector. A study on the electrochemical performances of the pure β-Ni(OH) 2 and CuO added β-Ni(OH) 2 electrodes in 6.0 M KOH electrolyte has revealed that CuO embedded β-Ni(OH) 2 displays much higher specific capacitance and better cyclability than pure β-Ni(OH) 2 . In fact, the addition of CuO improves the reversibility of the electrode by reducing the anodic (E pa ) and cathodic (E pc ) peak potential difference and also increases the separation of the oxygen evolution (E OE ) and anodic (E pa ) peak potential. Further, CuO nanoparticles grafted β-Ni(OH) 2 electrode displays elevated proton diffusion co-efficient (D) and inferior charge transfer resistance. Specifically, CuO embedded β-Ni(OH) 2 exhibits 855 F g −1 at 5 Ag -1 and good cycling stability as it maintains more than 90% of its original capacitance even after 3000 cycles. The enhancement may be attributed to the nanosize of CuO and chemical interaction between CuO and β-Ni(OH) 2 . These results are expected to offer new insight to future researchers who wish to work on the development of novel electrode materials for energy storage applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Alloys & Compounds is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.jallcom.2017.11.111
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 332
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      – SubjectFull: Nanocomposite materials
        Type: general
      – SubjectFull: Copper oxide
        Type: general
      – SubjectFull: Electrodes
        Type: general
      – SubjectFull: Supercapacitors
        Type: general
      – SubjectFull: Oxygen evolution reactions
        Type: general
    Titles:
      – TitleFull: CuO embedded β-Ni(OH)2 nanocomposite as advanced electrode materials for supercapacitors.
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            NameFull: Ravikumar, C.R.
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            NameFull: Kumar, M.R. Anil
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            – D: 05
              M: 03
              Text: Mar2018
              Type: published
              Y: 2018
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              Value: 736
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