Synthesis of Monodispere Au@Co₃O₄ Core‐Shell Nanocrystals and Their Enhanced Catalytic Activity for Oxygen Evolution Reaction

Abstract

Novel OER catalysts – monodisperse [email protected]3O4 core-shell nanocrystals – have been prepared by synthesizing Au nanocrystals, followed by deposition of Co shells and their conversion to Co3O4 shells. Owing to the synergistic effect, [email protected]3O4 nanocrystals have an OER activity 7 times as high as a Au and Co3O4 nanocrystals mixture or Co3O4 nanocrystals alone, and 55 times as high as Au nanocrystals alone. 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.