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N-doped carbon material encapsulated cobalt nanoparticles for bifunctional electrocatalysts derived from a porous Co(II)-based metal-organic frameworks (MOFs).

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Title: N-doped carbon material encapsulated cobalt nanoparticles for bifunctional electrocatalysts derived from a porous Co(II)-based metal-organic frameworks (MOFs).
Authors: Yang, Rong-Rong1 (AUTHOR), Wu, Yun-Long1 (AUTHOR) 20180717@xpu.edu.cn, Guo, Ying2 (AUTHOR), Yan, Yang-Tian1 (AUTHOR), Li, Rui-Jie1 (AUTHOR), Yang, Guo-Ping3 (AUTHOR), Su, Xiao-Lei1 (AUTHOR), Fu, Chong1 (AUTHOR), He, Xin-Hai1 (AUTHOR), Wang, Yaoyu3 (AUTHOR)
Source: Journal of Solid State Chemistry. May2022, Vol. 309, pN.PAG-N.PAG. 1p.
Subjects: Graphitization, Metal-organic frameworks, Hydrogen evolution reactions, Oxygen evolution reactions, Electrocatalysts, Cobalt, Composite materials
Abstract: In this report, a bifunctional electrocatalyst: Co nanoparticles attached on N-doped graphitized carbon material (Co@NC) was obtained by utilizing the porous Co(II)-based metal-organic frameworks (MOFs) as precursors under the one-step thermal treatment. The composites were fully analyzed by XRD, XPS, SEM, TEM, and BET and so on. The electrochemical explorations (OER and HER) show that the overpotential of Co@NC-6h- 3 ​at the current density 10 ​mA ​cm−2 is the lower the commercial RuO 2 catalyst (350 ​mA for 3 ; 380 ​mA for RuO 2). The Tafel slopes of the composite material are 63 ​mV dec−1, which is comparable to the RuO 2 (58 ​mV dec−1). The HER exploration show that the overpotential are 220 mv for 3 , and the Tafel slopes of 3 is 119 ​mV dec−1 for 3. The explorations reveals that the composites Co@NC-6h- 3 reveals good and stable catalytic performances for HER and OER, providing us with an efficient method to obtain the electrocatalysts via the pyrolysis of MOFs. [Display omitted] In this report, a new bifunctional electrocatalyst with the structure of Co nanoparticles embedded into N-doping graphitized carbon materials (Co@NC) was obtained by using a porous Co(II)-based metal-organic frameworks (MOFs) as precursor under the one-step thermal treatment. The electrochemical properties explorations show that Co@NC-6h- 3 reveals the excellent and stable catalytic performances for both hydrogen and oxygen evolution reactions (HER and OER). • ►A bifunctional electrocatalyst composites based Co, N and C are obtained by using a Co(II)-based MOFs. • ►The advantage is that Co nanoparticles can uniformly disperse in the electrocatalyst composite materials. • ►Co@NC-6h- 3 shows the excellent and stable catalytic performances for HER and OER. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Solid State Chemistry is the property of Academic Press Inc. 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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DbLabel: Engineering Source
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  Label: Title
  Group: Ti
  Data: N-doped carbon material encapsulated cobalt nanoparticles for bifunctional electrocatalysts derived from a porous Co(II)-based metal-organic frameworks (MOFs).
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  Data: <searchLink fieldCode="AR" term="%22Yang%2C+Rong-Rong%22">Yang, Rong-Rong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Yun-Long%22">Wu, Yun-Long</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 20180717@xpu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Guo%2C+Ying%22">Guo, Ying</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Yang-Tian%22">Yan, Yang-Tian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Rui-Jie%22">Li, Rui-Jie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Guo-Ping%22">Yang, Guo-Ping</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Su%2C+Xiao-Lei%22">Su, Xiao-Lei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fu%2C+Chong%22">Fu, Chong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22He%2C+Xin-Hai%22">He, Xin-Hai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Yaoyu%22">Wang, Yaoyu</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Solid+State+Chemistry%22">Journal of Solid State Chemistry</searchLink>. May2022, Vol. 309, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Graphitization%22">Graphitization</searchLink><br /><searchLink fieldCode="DE" term="%22Metal-organic+frameworks%22">Metal-organic frameworks</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+evolution+reactions%22">Hydrogen evolution reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen+evolution+reactions%22">Oxygen evolution reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Electrocatalysts%22">Electrocatalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Cobalt%22">Cobalt</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this report, a bifunctional electrocatalyst: Co nanoparticles attached on N-doped graphitized carbon material (Co@NC) was obtained by utilizing the porous Co(II)-based metal-organic frameworks (MOFs) as precursors under the one-step thermal treatment. The composites were fully analyzed by XRD, XPS, SEM, TEM, and BET and so on. The electrochemical explorations (OER and HER) show that the overpotential of Co@NC-6h- 3 ​at the current density 10 ​mA ​cm−2 is the lower the commercial RuO 2 catalyst (350 ​mA for 3 ; 380 ​mA for RuO 2). The Tafel slopes of the composite material are 63 ​mV dec−1, which is comparable to the RuO 2 (58 ​mV dec−1). The HER exploration show that the overpotential are 220 mv for 3 , and the Tafel slopes of 3 is 119 ​mV dec−1 for 3. The explorations reveals that the composites Co@NC-6h- 3 reveals good and stable catalytic performances for HER and OER, providing us with an efficient method to obtain the electrocatalysts via the pyrolysis of MOFs. [Display omitted] In this report, a new bifunctional electrocatalyst with the structure of Co nanoparticles embedded into N-doping graphitized carbon materials (Co@NC) was obtained by using a porous Co(II)-based metal-organic frameworks (MOFs) as precursor under the one-step thermal treatment. The electrochemical properties explorations show that Co@NC-6h- 3 reveals the excellent and stable catalytic performances for both hydrogen and oxygen evolution reactions (HER and OER). • ►A bifunctional electrocatalyst composites based Co, N and C are obtained by using a Co(II)-based MOFs. • ►The advantage is that Co nanoparticles can uniformly disperse in the electrocatalyst composite materials. • ►Co@NC-6h- 3 shows the excellent and stable catalytic performances for HER and OER. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Solid State Chemistry is the property of Academic Press Inc. 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:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jssc.2022.122989
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Graphitization
        Type: general
      – SubjectFull: Metal-organic frameworks
        Type: general
      – SubjectFull: Hydrogen evolution reactions
        Type: general
      – SubjectFull: Oxygen evolution reactions
        Type: general
      – SubjectFull: Electrocatalysts
        Type: general
      – SubjectFull: Cobalt
        Type: general
      – SubjectFull: Composite materials
        Type: general
    Titles:
      – TitleFull: N-doped carbon material encapsulated cobalt nanoparticles for bifunctional electrocatalysts derived from a porous Co(II)-based metal-organic frameworks (MOFs).
        Type: main
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            NameFull: Yang, Rong-Rong
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            NameFull: Wu, Yun-Long
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            NameFull: Guo, Ying
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            NameFull: Yan, Yang-Tian
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            NameFull: Li, Rui-Jie
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            NameFull: Yang, Guo-Ping
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            NameFull: Su, Xiao-Lei
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            NameFull: Fu, Chong
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            NameFull: He, Xin-Hai
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            NameFull: Wang, Yaoyu
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            – D: 01
              M: 05
              Text: May2022
              Type: published
              Y: 2022
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            – Type: issn-print
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              Value: 309
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            – TitleFull: Journal of Solid State Chemistry
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