uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Codoping-Induced, Rhombus-Shaped Co3O4 Nanosheets as an Active Electrode Material for Oxygen Evolution
South Univ Sci & Technol China, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China.;SUSTC, Shenzhen Key Lab Generat Semicond Devices 3, Shenzhen 518055, Peoples R China..
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry. Uppsala Univ, Dept Chem, Ctr Mol Devices, Phys Chem,Angstrom Lab, SE-75120 Uppsala, Sweden..
South Univ Sci & Technol China, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China.;SUSTC, Shenzhen Key Lab Generat Semicond Devices 3, Shenzhen 518055, Peoples R China..
2015 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 7, no 39, 21745-21750 p.Article in journal (Refereed) Published
Abstract [en]

Nanostructured Co3O4 doped with Zn2+, Ni2+, and both were directly grown on an ITO substrate by an easily available hydrothermal method. The doped Co3O4 showed a unique structural morphology evolution upon controlling the doping elements and the doping ratio of the cations. For the codoped samples, the novel rhombus-shaped Co3O4 nanosheets doped with Zn2+ and Ni2+ (concentration ratio of 1:2) exhibited the optimal electrocatalytic performance. The sample showed a current density of 165 mA cm(-2) at 1.75 V, approximately 1.6 and 4 times higher than that of samples doped with Zn2+ and Ni2+ at a concentration ratio of 1:1 and 1:3. The unique architecture and its corresponding modified physical properties, such as high active-site density created by codoping, large structural porosity, and high roughness, are together responsible to its superior performance. For codoped Co3O4 nanostructures, Zn2+ facilitates the creation of Co cations in their high oxidation state as active centers, while Ni2+ contributed to the new active sites with lower activation energy. The synergistic effect of Zn2+ and Ni2+ doping can explain the improved physicochemical properties of codoped Co3O4 nanostructures.

Place, publisher, year, edition, pages
2015. Vol. 7, no 39, 21745-21750 p.
Keyword [en]
water splitting, oxygen evolution reaction, electrocatalysis, codoped Co3O4, nanostructures
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-265820DOI: 10.1021/acsami.5b05149ISI: 000362628900018PubMedID: 26383787OAI: oai:DiVA.org:uu-265820DiVA: diva2:866636
Available from: 2015-11-03 Created: 2015-11-03 Last updated: 2017-12-01

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Authority records BETA

Zhang, Jinbao

Search in DiVA

By author/editor
Zhang, Jinbao
By organisation
Physical Chemistry
In the same journal
ACS Applied Materials and Interfaces
Physical Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 695 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf