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Hierarchically porous nanoarchitecture constructed by ultrathin CoSe2 embedded Fe-CoO nanosheets as robust electrocatalyst for water oxidation by Ramadoss, Manigandan; Chen, Yuanfu; Hu, Yang; Wang, Bin; Jeyagopal, Ramkumar; Marimuthu, Karpuraranjith; Wang, Xinqiang; Yang, Dongxu is a Engineering article available to read on EtoBox.
What is Hierarchically porous nanoarchitecture constructed by ultrathin CoSe2 embedded Fe-CoO nanosheets as robust electrocatalyst for water oxidation about?
The sluggish kinetics and high cost of the noble-metal based electrocatalyst for oxygen evolution reaction (OER) still seriously limits the efficiencies of water splitting. Herein, for the first time, we rationally design a porous hierarchical nanoarchitecture, constructed by ultrathin CoSe 2 embedded Fe-CoO nanosheets (CoSe 2 @Fe-CoO), which is synthesized via self-assembly hydrolysis driven in-situ synergetic selenization of Fe/Co/O/Se precursor followed by Ostwald ripening. As an OER catalyst, the porous CoSe 2 @Fe-CoO hybrid with abundant CoOOH electroactive sites delivers a small Tafel of 56.2 mV/dec with very low onset overpotential of 280 mV@10 mA/cm 2 and excellent long-term physicochemical stability till 62 h without obvious decay, which outperforms well-established benchmark electrocatalysts (RuO 2 ). The boosted OER performance of CoSe 2 @Fe-CoO nanosheets is mainly attributed to its iron-doping effect, porous nanoarchitecture, and multicomponent synergetic/interfacial effect between ultrathin cobalt (II) oxide and conductive cobalt selenide (CoSe 2 ) nanoframework. This work presents a facile construction strategy to find a nonprecious hybrid OER electrocatalyst with ex
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It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Ramadoss, Manigandan; Chen, Yuanfu; Hu, Yang; Wang, Bin; Jeyagopal, Ramkumar; Marimuthu, Karpuraranjith; Wang, Xinqiang; Yang, Dongxu
- Publisher
- Allerton Press Inc; Elsevier ; Allerton Press Inc.; Elsevier BV (ISSN 1005-0302)
- Published
- 2021
- Language
- EN
- Field
- Engineering (Physical Sciences)