3 years ago

Well-Defined Metal–O6 in Metal–Catecholates as a Novel Active Site for Oxygen Electroreduction

Well-Defined Metal–O6 in Metal–Catecholates as a Novel Active Site for Oxygen Electroreduction
Jing Wu, Wen-Jie Jiang, Wei-Li Hu, Xuan-He Liu, Shuai Niu, Ya-Wen Yang, Bing Sun, Jin-Song Hu
Metal–nitrogen coordination sites, M–Nx (M = Fe, Co, Ni, etc.), have shown great potential to replace platinum group materials as electrocatalysts for oxygen reduction reaction (ORR). However, the real active site in M–Nx is still vague to date due to their complicated structure and composition. It is therefore highly desirable but challenging to develop ORR catalysts with novel and clear active sites, which could meet the needs of comprehensive understanding of structure–function relationships and explore new cost-effective and efficient ORR electrocatalysts. Herein, well-defined M–O6 coordination in metal–catecholates (M–CATs, M = Ni or Co) is discovered to be catalytically active for ORR via a four-electron-dominated pathway. In view of no pyrolysis involved and unambiguous crystalline structure of M–CATs, the M–O6 octahedral coordination site with distinct structure is determined as a new type of active site for ORR. These findings extend the scope of metal–nonmetal coordination as an active site for ORR and pave a way for bottom-up design of novel electrocatalysts containing M–O6 coordination.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b07410

DOI: 10.1021/acsami.7b07410

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.