Abstract
AbstractDesigning active and stable oxygen evolution reaction (OER) catalysts are vitally important to various energy conversion devices. Herein, we introduce elements Ni and Mn into (Co)tet(Co2)octO4 nanosheets (NSs) at fixed geometrical sites, including Mnoct, Nioct, and Nitet, to optimize the initial geometrical structure and modulate the CoCo2O4 surface from oxygen‐excess to oxygen‐deficiency. The pristine (Ni,Mn)‐(Co)tet(Co2)octO4 NSs shows excellent OER activity with an overpotential of 281.6 mV at a current density of 10 mA cm−2. Moreover, without damaging their initial activity, the activated (Act)‐(Ni,Mn)‐(Co)tet(Co2)octO4 NSs after surface reconstruction exhibit long‐term stability of 100 h under 10 mA cm−2, 50 mA cm−2, or even 100 mA cm−2. The optimal balance between electroactivity and stability leads to remarkable OER performances, providing a pivotal guideline for designing ideal electrocatalysts and inspiring more works to focus on the dynamic change of each occupation site component.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
