In Situ Growth of Hollow Trimetallic Nanocubes on Nickel Foam for the Electrocatalytic Oxygen Evolution Reaction. Issue 1 (23rd November 2020)

• Record Type: Journal Article
• Authors: Li, Zhuzhu; Deng, Puhui; Zhang, Xue; Zhang, Linping; Hou, Yu
• Is Part Of: ChemElectroChem. Volume 8:Issue 1(2021)
• Page Start: 77
• Page End: 82
• Publication Date: 2020-11-23
• Subjects: hollow nanocubes -- Prussian blue analogue -- nickel foam -- oxygen evolution reaction -- electrocatalysts; Electrochemistry -- Periodicals; 541.37
• DOI: 10.1002/celc.202001356
• Languages: English
• ISSNs: 2196-0216

Abstract

Abstract: Nanomaterials derived from Prussian blue (PB) and its analogues (PBAs) possess uniform active centers and large surface areas, which can be applied in the field of electrocatalysis. In this study, nickel‐iron‐cobalt trimetallic PBAs, that is, NiFeCo(4 : 1)PBA nanocubes, were grown in situ on nickel foam (NF), which was subsequently calcined in air to obtain a composite electrode, NiO/FeOX /Co3 O4 @NF, with a loose porous hollow nanocube morphology. This structure remarkably enlarged the contact area between the electrolyte and the catalyst. In addition, a synergistic effect among these metallic oxides expedited oxygen evolution reaction (OER) kinetics. The Tafel slope (71.25 mV dec −1 ) toward OER of the constructed electrode is fairly small, much lower than that of our prepared bimetallic oxides@NF electrodes. The enduring stability is more than 22 h. This work indicates that, through morphology and composition control, the electrocatalytic performance of the designed electrode can be effectively improved. Abstract : Close contact : Trimetallic oxides@nickel foam electrode materials are obtained by calcining the precursor of trimetallic Prussian blue analogue (PBA)@nickel foam in air. The synergistic effect among metal oxides, together with the hollow structure of the electrocatalyst on nickel foam resulted in splendid oxygen evolution reaction performance.