Abstract
Exploiting highly efficient oxygen-evolving electrocatalysts is crucial for hydrogen production through seawater electrolysis. Here, a hierarchical structure of boron-doped (Ni,Fe)OOH grown on Ni3N nanosheets supported on nickel foam [denoted as B-(Ni,Fe)OOH/Ni3N/NF] is fabricated. Benefiting from the formation of abundant active sites and the reduced free energy barrier of the rate-determining step caused by B doping, the obtained B-(Ni,Fe)OOH/Ni3N/NF exhibits extraordinary electrocatalytic activity for oxygen evolution reaction, requiring overpotentials of only 283 mV and 309 mV to achieve a current density of 1000 mA cm−2 in alkaline pure water and seawater media, respectively, as well as superior stability. When driven by a commercial Si solar cell, the electrolyzer using B-(Ni,Fe)OOH/Ni3N/NF as the anode and a previously reported Ru/(Fe,Ni)(OH)2/NF as the cathode can achieve a high current of over 1000 mA in alkaline seawater media. This shows the great potential in applying a photovoltaic-driven electrolyzer toward large-scale hydrogen production in seawater electrolysis.
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.
