umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • 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
Enhanced catalytic activity towards hydrogen evolution on polythiophene via microstructural changes
School of Chemistry, Monash Univeristy, Clayton, Victoria 3800, Australia.ORCID iD: 0000-0002-3804-6421
2017 (English)In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 42, no 2, p. 886-894Article in journal (Refereed) Published
Abstract [en]

The discovery of poly(2,20 -bithiophene) (PBTh) as a photo-electrochemical catalyst for the hydrogen evolution reaction (HER) presents a novel electrode material for the transition to a sustainable hydrogen energy economy. Nonetheless, it remains limited by a low hydrogen evolution rate. We here investigate two methods in which to increase the catalytic activity of PBTh: using humidity for alternative templating and substrate roughening. It was found that exposure of the oxidant solution to humidity prior to polymerisation causes the formation of new microstructures that was found to increase catalytic activity of the PBTh film by over four times, from 14 to 57 mA cm-2. It was also found that control of the atmospheric environment proved critical. In contrast, the roughening of the substrate did not consistently lead to an increase in performance and was attributed to poor adhesion and electrical contact of the film to the substrate. During these tests however, a photoelectrocatalytic current of 150 mA cm2 was recorded in pH 7.0 and an underpotential of 0.12 V on an un-roughened PBTh sample. This represents the highest reported value for PBTh thus far and a significant achievement for its further development towards a low-cost and efficient HER catalyst.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 42, no 2, p. 886-894
Keywords [en]
Photo-electrocatalyst, Conducting polymer, Polythiophene, Organic electrode, Morphology, Hydrogen production
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-148972DOI: 10.1016/j.ijhydene.2016.10.105ISI: 000395213200010OAI: oai:DiVA.org:umu-148972DiVA, id: diva2:1218016
Available from: 2018-06-13 Created: 2018-06-13 Last updated: 2018-10-16Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Search in DiVA

By author/editor
Ohlin, C. Andre
In the same journal
International journal of hydrogen energy
Materials Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 35 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • 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