The Significance of Properly Reporting Turnover Frequency in Electrocatalysis Research

Sengeni Anantharaj*, Pitchiah Esakki Karthik, Suguru Noda

*この研究の対応する著者

研究成果: Comment/debate査読

9 被引用数 (Scopus)

抄録

For decades, turnover frequency (TOF) has served as an accurate descriptor of the intrinsic activity of a catalyst, including those in electrocatalytic reactions involving both fuel generation and fuel consumption. Unfortunately, in most of the recent reports in this area, TOF is often not properly reported or not reported at all, in contrast to the overpotentials at a benchmarking current density. The current density is significant in determining the apparent activity, but it is affected by catalyst-centric parasitic reactions, electrolyte-centric competing reactions, and capacitance. Luckily, a properly calculated TOF can precisely give the intrinsic activity free from these phenomena in electrocatalysis. In this Viewpoint we ask: 1) What makes the commonly used activity markers unsuitable for intrinsic activity determination? 2) How can TOF reflect the intrinsic activity? 3) Why is TOF still underused in electrocatalysis? 4) What methods are used in TOF determination? and 5) What is essential in the more accurate calculation of TOF? Finally, the significance of normalizing TOF by Faradaic efficiency (FE) is stressed and we give our views on the development of universal analytical tools to determine the exact number of active sites and real surface area for all kinds of materials.

本文言語English
ページ(範囲)23051-23067
ページ数17
ジャーナルAngewandte Chemie - International Edition
60
43
DOI
出版ステータスPublished - 2021 10 18

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)

フィンガープリント

「The Significance of Properly Reporting Turnover Frequency in Electrocatalysis Research」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル