View in EDS

Nanoporous (Pt1-xCox)3Al intermetallic compound as a high-performance catalyst for oxygen reduction reaction.

Saved in:
Bibliographic Details
Title: Nanoporous (Pt1-xCox)3Al intermetallic compound as a high-performance catalyst for oxygen reduction reaction.
Authors: Yao, Rui-Qi1, Han, Li-Ping1, Lang, Xing-You1 xylang@jlu.edu.cn, Cheng, Tuo1, Wen, Zi1, Liu, Gang1,2 lgsammer@mail.xjtu.edu.cn, Jiang, Qing1
Source: International Journal of Hydrogen Energy. Oct2018, Vol. 43 Issue 43, p19947-19954. 8p.
Subjects: Nanoporous materials, Platinum compounds, Cobalt compounds, Intermetallic compounds synthesis, Catalysts, Oxygen reduction, Energy conversion, Thermodynamic equilibrium
Abstract: Abstract Nanocatalysts that boost the sluggish kinetics of oxygen reduction reaction with a long-term durability are crucial for widespread use of low-temperature fuel cells. Here we report a nanoporous intermetallic compound typically composed of platinum–cobalt–aluminum intermetallic core with in-situ grown atomic-layer-thick Pt skin as a novel oxygen-reduction-reaction nanocatalyst with remarkably enhanced performance. Both Pt and Co atoms thermodynamically prefer to locate nearby Al element within face-centered cubic Pt 3 Al matrix via the formation of strong Pt Al and Co Al bonds, which not only enable synergistic ligand and compressive strain effects to moderately weaken the oxygen adsorption energy of Pt skin, but alleviate the evolution of surface Pt atoms to protect against the further dissolution of less-noble Co and Al. As a result, the nanoporous platinum–cobalt–aluminum nanocatalyst exhibits specific activity of 3.40 mA cm−2 Pt and mass activity of 2.2 A mg−1 Pt for the oxygen reduction reaction at 0.9 V versus reversible hydrogen electrode (∼13- and ∼20-fold enhancement relative to commercially available platinum nanoparticles supported carbon) with an exceptional durability, showing genuine potential as cathode catalyst in next-generation electrochemical energy conversion devices. Graphical abstract Image 1 Highlights • Scalable preparation of nanoporous Pt Co Al ternary intermetallic compound as ORR catalysts. • Nanoporous Pt Co Al intermetallic compound had a (Pt 1-x Co x) 3 Al/Pt core/shell structure. • Intermetallic compound was employed as matrix to control compressive strain of co incorporation. • Nanoporous Pt Co Al exhibited superior catalytic activity and stability for ORR. [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
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 132720463
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Nanoporous (Pt1-xCox)3Al intermetallic compound as a high-performance catalyst for oxygen reduction reaction.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Yao%2C+Rui-Qi%22">Yao, Rui-Qi</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Han%2C+Li-Ping%22">Han, Li-Ping</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lang%2C+Xing-You%22">Lang, Xing-You</searchLink><relatesTo>1</relatesTo><i> xylang@jlu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Cheng%2C+Tuo%22">Cheng, Tuo</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wen%2C+Zi%22">Wen, Zi</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Gang%22">Liu, Gang</searchLink><relatesTo>1,2</relatesTo><i> lgsammer@mail.xjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Qing%22">Jiang, Qing</searchLink><relatesTo>1</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Hydrogen+Energy%22">International Journal of Hydrogen Energy</searchLink>. Oct2018, Vol. 43 Issue 43, p19947-19954. 8p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Nanoporous+materials%22">Nanoporous materials</searchLink><br /><searchLink fieldCode="DE" term="%22Platinum+compounds%22">Platinum compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Cobalt+compounds%22">Cobalt compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Intermetallic+compounds+synthesis%22">Intermetallic compounds synthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysts%22">Catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen+reduction%22">Oxygen reduction</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+conversion%22">Energy conversion</searchLink><br /><searchLink fieldCode="DE" term="%22Thermodynamic+equilibrium%22">Thermodynamic equilibrium</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract Nanocatalysts that boost the sluggish kinetics of oxygen reduction reaction with a long-term durability are crucial for widespread use of low-temperature fuel cells. Here we report a nanoporous intermetallic compound typically composed of platinum–cobalt–aluminum intermetallic core with in-situ grown atomic-layer-thick Pt skin as a novel oxygen-reduction-reaction nanocatalyst with remarkably enhanced performance. Both Pt and Co atoms thermodynamically prefer to locate nearby Al element within face-centered cubic Pt 3 Al matrix via the formation of strong Pt Al and Co Al bonds, which not only enable synergistic ligand and compressive strain effects to moderately weaken the oxygen adsorption energy of Pt skin, but alleviate the evolution of surface Pt atoms to protect against the further dissolution of less-noble Co and Al. As a result, the nanoporous platinum–cobalt–aluminum nanocatalyst exhibits specific activity of 3.40 mA cm−2 Pt and mass activity of 2.2 A mg−1 Pt for the oxygen reduction reaction at 0.9 V versus reversible hydrogen electrode (∼13- and ∼20-fold enhancement relative to commercially available platinum nanoparticles supported carbon) with an exceptional durability, showing genuine potential as cathode catalyst in next-generation electrochemical energy conversion devices. Graphical abstract Image 1 Highlights • Scalable preparation of nanoporous Pt Co Al ternary intermetallic compound as ORR catalysts. • Nanoporous Pt Co Al intermetallic compound had a (Pt 1-x Co x) 3 Al/Pt core/shell structure. • Intermetallic compound was employed as matrix to control compressive strain of co incorporation. • Nanoporous Pt Co Al exhibited superior catalytic activity and stability for ORR. [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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=132720463
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.ijhydene.2018.09.035
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 8
        StartPage: 19947
    Subjects:
      – SubjectFull: Nanoporous materials
        Type: general
      – SubjectFull: Platinum compounds
        Type: general
      – SubjectFull: Cobalt compounds
        Type: general
      – SubjectFull: Intermetallic compounds synthesis
        Type: general
      – SubjectFull: Catalysts
        Type: general
      – SubjectFull: Oxygen reduction
        Type: general
      – SubjectFull: Energy conversion
        Type: general
      – SubjectFull: Thermodynamic equilibrium
        Type: general
    Titles:
      – TitleFull: Nanoporous (Pt1-xCox)3Al intermetallic compound as a high-performance catalyst for oxygen reduction reaction.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Yao, Rui-Qi
      – PersonEntity:
          Name:
            NameFull: Han, Li-Ping
      – PersonEntity:
          Name:
            NameFull: Lang, Xing-You
      – PersonEntity:
          Name:
            NameFull: Cheng, Tuo
      – PersonEntity:
          Name:
            NameFull: Wen, Zi
      – PersonEntity:
          Name:
            NameFull: Liu, Gang
      – PersonEntity:
          Name:
            NameFull: Jiang, Qing
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 25
              M: 10
              Text: Oct2018
              Type: published
              Y: 2018
          Identifiers:
            – Type: issn-print
              Value: 03603199
          Numbering:
            – Type: volume
              Value: 43
            – Type: issue
              Value: 43
          Titles:
            – TitleFull: International Journal of Hydrogen Energy
              Type: main
ResultId 1