ACS Applied Materials & Interfaces
ACS Applied Materials & Interfaces
5 years ago

In Situ Derived NixFe1–xOOH/NiFe/NixFe1–xOOH Nanotube Arrays from NiFe Alloys as Efficient Electrocatalysts for Oxygen Evolution

In Situ Derived NixFe1–xOOH/NiFe/NixFe1–xOOH Nanotube Arrays from NiFe Alloys as Efficient Electrocatalysts for Oxygen Evolution
Chaolun Liang, Gao-Ren Li, Mei Li, Yu-Tao Dong, An-Liang Wang
Herein, NixFe1–xOOH/NiFe/NixFe1–xOOH sandwich-structured nanotube arrays (SNTAs) supported on carbon fiber cloth (CFC) (NixFe1–xOOH/NiFe/NixFe1–xOOH SNTAs–CFC) have been developed as flexible high-performance oxygen evolution reaction (OER) catalysts by a facile in situ electrochemical oxidation of NiFe metallic alloy nanotube arrays during oxygen evolution process. Benefiting from the advantages of high conductivity, hollow nanotube array, and porous structure, NixFe1–xOOH/NiFe/NixFe1–xOOH SNTAs–CFC exhibited a low overpotential of ∼220 mV at the current density of 10 mA cm–2 and a small Tafel slope of 57 mV dec–1 in alkaline solution, both of which are smaller than those of most OER electrocatalysts. Furthermore, NixFe1–xOOH/NiFe/NixFe1–xOOH SNTAs–CFC exhibits excellent stability at 100 mA cm–2 for more than 30 h. It is believed that the present work can provide a valuable route for the design and synthesis of inexpensive and efficient OER electrocatalysts.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b10609

DOI: 10.1021/acsami.7b10609

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.