A Thin NiFe Hydroxide Film Formed by Stepwise Electrodeposition Strategy with Significantly Improved Catalytic Water Oxidation Efficiency

NiFe film for oxygen evolution reaction (OER): An ultrathin NiFe-hydroxide film is generated by stepwise electrodeposition with a significantly improved catalytic OER activity, as compared to NiFe films obtained by using traditional methods. The turnover frequency of 8.7 s−1 at an overpotential of 329 mV is extraordinary and represents the highest value among heterogeneous OER catalysts. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.