3 years ago

A mechanical, high surface area and solvent-free ‘powder-to-electrode’ fabrication method for screening OER catalysts

A mechanical, high surface area and solvent-free ‘powder-to-electrode’ fabrication method for screening OER catalysts
The screening of new OER materials routinely involves fabricating electrodes from powders using methods which are often time consuming and may involve using solvents and/or conductive materials that can alter the OER activity of the powder. Herein, a new mechanical, solvent-free method for fabricating electrodes for OER is described in which a electroactive material under test, mixed with a small amount of PTFE powder (ca. 10wt%), is pressed onto Pt powder to create a permanent, robust electrode that can be used in a rotating disc electrode set-up. This new method of fabricating electrodes is compared to the well-known dropcast on Glassy Carbon (GC) method, using commercially available materials: RuO2, Co3O4 and NiO. The results show that the mechanical route produces much better OER performances, in terms of overpotential and stability, for the commercial metal oxide on the pressed discs when compared to the dropcast GC method. Finally, it is shown that this mechanical, high surface area, solvent-free electrode fabrication technique can also be achieved using silver, rather than platinum, as the conducting, support material.

Publisher URL: www.sciencedirect.com/science

DOI: S1388248117302862

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.