Abstract
Herein, Fe‐doped Ni3S2/Ni(OH)2/Ni@NSG electrocatalysts are prepared by dealloying Ni–Al precursors followed by magnetic stirring. It is found that the hydrogen precipitation reaction (HER) of NSG‐Fe‐25 is 148 mV at a current density of 10 mA cm−2 and the oxygen evolution reaction (OER) is 274 mV at a current density of 50 mA cm−2 compared to NSG‐Fe‐5, NSG‐Fe‐45, Ni‐NN‐Fe, and Ni‐NN‐Fe@NSG. The Tafel slopes for the HER are 81.6 mV dec−1, and the Tafel slope of OER is 61.6 mV dec−1, while the Cdl value of NSG‐Fe‐25 is larger and the resistance value is smaller. Therefore, NSG‐Fe‐25 has the optimal performance. The heterostructure of Fe‐doped Ni3S2/Ni(OH)2/Ni@NSG provides abundant active sites for surface HER and OER, which enhances the electronic conductivity of the electrode. Meanwhile, long‐term constant‐current electrolysis test experiments show that NSG‐Fe has good stability in use. The present study opens a new window for the design and preparation of total hydrolysis electrocatalysts.
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.
