ChemElectroChem
ChemElectroChem
5 years ago

Performance of MOF-Derived Spinel Type NixCo3-xO4-y Nanocages in Efficient Methanol Electro-Oxidation

Performance of MOF-Derived Spinel Type NixCo3-xO4-y Nanocages in Efficient Methanol Electro-Oxidation
Rajini P. Antony, Bhagawantrao N. Jagatap, Ashis K. Satpati
The present study reports electrocatalytic activity towards methanol oxidation of mesoporous NixCo3-xO4-y fabricated through a metal-organic framework (MOF) template route. MOF-derived NixCo3-xO4-y nanocages exhibit a methanol oxidation reaction (MOR) current of approximately 200 Ag−1 at 0.55 V versus Hg-HgO, which is around 12 times higher than that from Co3O4. Improved activity for the catalyst is ascribed to its higher number of catalytic active sites and non-stoichiometry in the composition. The improved charge-transfer kinetics for the MOR is evident from the electrochemical impedance measurements, where a lower charge-transfer resistance is observed for NixCo3-xO4-y nanocages and the trend is consistent with the MOR results. The potential-dependent impedance measurements suggest that direct electrochemical MOR is facilitated through a surface intermediate, where the surface intermediates (CH3OH or CO) are adsorbed on low coordinated Ni and Co sites, respectively. I want MOR: Excellent MOR activity is observed in MOF-derived NixCo3-xO4-y, which is compared to Co3O4 and found to be superior.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/celc.201700832

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.