Application of in situ techniques for the characterization of NiFe based oxygen evolution reaction (OER) electrocatalysts.

Application of in situ techniques for the characterization of NiFe based oxygen evolution reaction (OER) electrocatalysts.
Angew Chem Int Ed Engl. 2018 Apr 17;:
Authors: Yang W, Zhu K, Zhu X
Abstract
Developing high-efficiency and affordable electrocatalysts for the sluggish oxygen evolution reaction (OER) remains a crucial bottleneck on the way to the practical applications of rechargeable energy storage technologies and water splitting for producing clean fuel (H2). In recent years, NiFe based materials have demonstrated to be excellent electrocatalysts for OER. Understanding the characteristics that affect OER activity and determining the OER mechanism are of vital importance for the development of OER electrocatalysts. Therefore, in situ characterization techniques performed under OER conditions are urgently needed to monitor the key intermediates together with identifying the OER active centers and phases. In this review, the recent advances on in situ techniques for the characterization of NiFe based electrocatalysts are thoroughly summarized, including Raman spectroscopy, X-ray absorption spectroscopy, ambient pressure X-ray photoelectron spectroscopy, Mӧssbauer spectroscopy, Ultraviolet-visible spectroscopy, differential electrochemical mass spectrometry and surface interrogation scanning electrochemical microscopy. The results from these in situ measurements not only reveal the structural transformation and the progressive ...

Source: Angewandte Chemie - April 17, 2018 Category: Chemistry Authors: Yang W, Zhu K, Zhu X Tags: Angew Chem Int Ed Engl Source Type: research