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Selenium vacancy and phosphorus-doping-induced phase transition engineering of cobalt diselenide as bi-functional catalyst for water electrolysis.

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Title: Selenium vacancy and phosphorus-doping-induced phase transition engineering of cobalt diselenide as bi-functional catalyst for water electrolysis.
Authors: Wondimu, Tadele Hunde1 (AUTHOR), Chen, Guan-Cheng1 (AUTHOR), Kabtamu, Daniel Manaye1 (AUTHOR), Chen, Hsueh-Yu1 (AUTHOR), Bayeh, Anteneh Wodaje1 (AUTHOR), Huang, Hsin-Chih1 (AUTHOR) hchuanggood@gmail.com, Wang, Chen-Hao1 (AUTHOR) chwang@mail.ntust.edu.tw
Source: International Journal of Hydrogen Energy. Nov2019, Vol. 44 Issue 54, p28566-28577. 12p.
Subjects: Hydrogen evolution reactions, Water electrolysis, Phase transitions, Oxygen evolution reactions, Platinum catalysts, Cobalt, Selenium
Abstract: This study demonstrates a two-step approach for the synthesis of a cobalt phosphoselenide nanobelt (H–CoSe (2−x) P x NB) that has excellent activity for the hydrogen evolution reaction over a wide pH range (0–14), exhibiting low overpotentials of 112, 261, and 391 mV at a current density of 10 mA cm−2 in 0.5 M H 2 SO 4 , 1 M KOH, and 1 M phosphate-buffered solution, respectively. Conversely, the H–CoSe (2−x) P x NB can be used for the oxygen evolution reaction in basic media, for which its electrochemical performance is superior to that of a platinum catalyst. When a H–CoSe (2−x) P x NB is used on both sides of a single electrolysis cell, almost no degradation occurs at various constant potentials for 12 h period. Its high performance, electrode stability, and easy synthesis suggest that the H–CoSe (2−x) P x NB is an efficient and economic electrocatalyst for water electrolysis. Image 1 • H–CoSe (2−x) P x NB is synthesized by hydrothermal followed by CVD method. • Electrocatalytic activities of H–CoSe (2−x) P x NB for HER and OER are studied. • Synergistic effect of H–CoSe (2−x) P x NB and CoP enhances the performance. • H–CoSe (2−x) P x NB performs low overpotentials in 0.5 M H 2 SO 4 ,1 M KOH, and 1 M PBS. • H–CoSe (2−x) P x NB is stable in 0.5 M H 2 SO 4 at 10–40 mA cm−2 more than 12 h. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science 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
An: 139276940
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PubTypeId: academicJournal
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  Label: Title
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  Data: Selenium vacancy and phosphorus-doping-induced phase transition engineering of cobalt diselenide as bi-functional catalyst for water electrolysis.
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  Data: <searchLink fieldCode="AR" term="%22Wondimu%2C+Tadele+Hunde%22">Wondimu, Tadele Hunde</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Guan-Cheng%22">Chen, Guan-Cheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kabtamu%2C+Daniel+Manaye%22">Kabtamu, Daniel Manaye</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Hsueh-Yu%22">Chen, Hsueh-Yu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bayeh%2C+Anteneh+Wodaje%22">Bayeh, Anteneh Wodaje</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Hsin-Chih%22">Huang, Hsin-Chih</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hchuanggood@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Chen-Hao%22">Wang, Chen-Hao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chwang@mail.ntust.edu.tw</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Hydrogen+Energy%22">International Journal of Hydrogen Energy</searchLink>. Nov2019, Vol. 44 Issue 54, p28566-28577. 12p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Hydrogen+evolution+reactions%22">Hydrogen evolution reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Water+electrolysis%22">Water electrolysis</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+transitions%22">Phase transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen+evolution+reactions%22">Oxygen evolution reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Platinum+catalysts%22">Platinum catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Cobalt%22">Cobalt</searchLink><br /><searchLink fieldCode="DE" term="%22Selenium%22">Selenium</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study demonstrates a two-step approach for the synthesis of a cobalt phosphoselenide nanobelt (H–CoSe (2−x) P x NB) that has excellent activity for the hydrogen evolution reaction over a wide pH range (0–14), exhibiting low overpotentials of 112, 261, and 391 mV at a current density of 10 mA cm−2 in 0.5 M H 2 SO 4 , 1 M KOH, and 1 M phosphate-buffered solution, respectively. Conversely, the H–CoSe (2−x) P x NB can be used for the oxygen evolution reaction in basic media, for which its electrochemical performance is superior to that of a platinum catalyst. When a H–CoSe (2−x) P x NB is used on both sides of a single electrolysis cell, almost no degradation occurs at various constant potentials for 12 h period. Its high performance, electrode stability, and easy synthesis suggest that the H–CoSe (2−x) P x NB is an efficient and economic electrocatalyst for water electrolysis. Image 1 • H–CoSe (2−x) P x NB is synthesized by hydrothermal followed by CVD method. • Electrocatalytic activities of H–CoSe (2−x) P x NB for HER and OER are studied. • Synergistic effect of H–CoSe (2−x) P x NB and CoP enhances the performance. • H–CoSe (2−x) P x NB performs low overpotentials in 0.5 M H 2 SO 4 ,1 M KOH, and 1 M PBS. • H–CoSe (2−x) P x NB is stable in 0.5 M H 2 SO 4 at 10–40 mA cm−2 more than 12 h. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science 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.ijhydene.2019.09.101
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 28566
    Subjects:
      – SubjectFull: Hydrogen evolution reactions
        Type: general
      – SubjectFull: Water electrolysis
        Type: general
      – SubjectFull: Phase transitions
        Type: general
      – SubjectFull: Oxygen evolution reactions
        Type: general
      – SubjectFull: Platinum catalysts
        Type: general
      – SubjectFull: Cobalt
        Type: general
      – SubjectFull: Selenium
        Type: general
    Titles:
      – TitleFull: Selenium vacancy and phosphorus-doping-induced phase transition engineering of cobalt diselenide as bi-functional catalyst for water electrolysis.
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            NameFull: Wondimu, Tadele Hunde
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            NameFull: Chen, Guan-Cheng
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            NameFull: Kabtamu, Daniel Manaye
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            NameFull: Chen, Hsueh-Yu
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            NameFull: Bayeh, Anteneh Wodaje
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            NameFull: Huang, Hsin-Chih
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            NameFull: Wang, Chen-Hao
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            – D: 05
              M: 11
              Text: Nov2019
              Type: published
              Y: 2019
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            – TitleFull: International Journal of Hydrogen Energy
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