Abstract
AbstractOxygen evolution reaction (OER) catalysts and substrates play a vital role in the electrochemical water splitting process to generate chemical fuel and store renewable energy. The design and development of cost effective and efficient catalysts and substrates is still crucial and progressive towards the commercialization of water electrolyser. Herein, we have shown abundant mild steel (MS) as an efficient substrate as well as a catalyst host for OER by the cathodic treatment followed by the electrodeposited Ni(OH)2 at room temperature. The C MS Ni(OH)2 shows an overpotential (η) of 267 mV at a current density of 10 mA cm−2 with a Tafel slope of 66 mV dec−1, and affordable stability at the benchmark scale of 10 mA cm−2 current density operation for 10 h and harsh condition of 100 mA cm−2 current density for 50 h in the continuous electrolysis chronoamperometry test in 1 M KOH. The higher catalytic activity of C MS Ni(OH)2 compared to Ni(OH)2 electrodeposited on MS is due to the interaction of Fe(OH)2/FeOOH and Ni(OH)2/NiOOH. These results suggest a possible way to utilize MS substrates as catalyst and as a host for OER and other electrochemical applications in the future.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.