[an error occurred while processing this directive]

高等学校化学研究 ›› 2020, Vol. 36 ›› Issue (3): 360-365.doi: 10.1007/s40242-020-0107-1

• Reviews • 上一篇    下一篇

Common Pitfalls of Reporting Electrocatalysts for Water Splitting

WANG Yuan1, ARANDIYAN Hamidreza2, DASTAFKAN Kamran1, LI Yibing1, ZHAO Chuan1   

  1. 1. School of Chemistry, Faculty of Science, The University of New South Wales, Sydney, New South Wales 2052, Australia;
    2. Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, The University of Sydney, Sydney 2006, Australia
  • 收稿日期:2020-04-14 修回日期:2020-05-08 出版日期:2020-06-01 发布日期:2020-05-30
  • 通讯作者: ZHAO Chuan E-mail:chuan.zhao@unsw.edu.au
  • 基金资助:
    Supported by the Fund of the Australian Renewable Energy Agency(ARENA) and the Fund of the Australian Research Council(No.FT170100224).

Common Pitfalls of Reporting Electrocatalysts for Water Splitting

WANG Yuan1, ARANDIYAN Hamidreza2, DASTAFKAN Kamran1, LI Yibing1, ZHAO Chuan1   

  1. 1. School of Chemistry, Faculty of Science, The University of New South Wales, Sydney, New South Wales 2052, Australia;
    2. Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, The University of Sydney, Sydney 2006, Australia
  • Received:2020-04-14 Revised:2020-05-08 Online:2020-06-01 Published:2020-05-30
  • Contact: ZHAO Chuan E-mail:chuan.zhao@unsw.edu.au
  • Supported by:
    Supported by the Fund of the Australian Renewable Energy Agency(ARENA) and the Fund of the Australian Research Council(No.FT170100224).

摘要: Rigorous assessment of heterogeneous electrocatalysts for electrochemical water splitting has been a critical issue mainly due to insufficient standard protocols to measure and report experimental data. In this perspective, we highlight some common pitfalls when measuring and reporting electrocatalytic data, which should be avoided to ensure the accuracy and reproducibility and to advance the water splitting field. We advocate to prevent the introduction of artefacts from the counter and reference electrodes, as well as the impurities in the electrolyte when conducting electrocatalyst activity measurements. In addition, we encourage the use of the electrochemically active surface area(ECSA)-normalized current densities to represent the intrinsic activity of the reported catalysts for a better comparison with previously known materials. Suitable ECSA measurement methods should be employed based on the nature of catalysts. Recommendations made in this perspective will hopefully assist in identifying advanced catalysts for water splitting research.

关键词: Electrocatalyst, Water splitting, Electrochemical active surface area, Benchmarking catalyst, Energy conversion and storage

Abstract: Rigorous assessment of heterogeneous electrocatalysts for electrochemical water splitting has been a critical issue mainly due to insufficient standard protocols to measure and report experimental data. In this perspective, we highlight some common pitfalls when measuring and reporting electrocatalytic data, which should be avoided to ensure the accuracy and reproducibility and to advance the water splitting field. We advocate to prevent the introduction of artefacts from the counter and reference electrodes, as well as the impurities in the electrolyte when conducting electrocatalyst activity measurements. In addition, we encourage the use of the electrochemically active surface area(ECSA)-normalized current densities to represent the intrinsic activity of the reported catalysts for a better comparison with previously known materials. Suitable ECSA measurement methods should be employed based on the nature of catalysts. Recommendations made in this perspective will hopefully assist in identifying advanced catalysts for water splitting research.

Key words: Electrocatalyst, Water splitting, Electrochemical active surface area, Benchmarking catalyst, Energy conversion and storage