Facile Synthesis of Cobalt Oxide Nanoparticles by Thermal Decomposition of Cobalt(II) Carboxamide Complexes: Application as Oxygen Evolution Reaction Electrocatalyst in Alkaline Water Electrolysis

被引:0
|
作者
Soraia Meghdadi
Mehdi Amirnasr
Mohammad Zhiani
Fariba Jallili
Meysam Jari
Mahsa Kiani
机构
[1] Isfahan University of Technology,Department of Chemistry
来源
Electrocatalysis | 2017年 / 8卷
关键词
Cobalt carboxamide complex; Co; O; nanoparticles; Oxygen evolution reaction; Water oxidation; Anode catalyst;
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中图分类号
学科分类号
摘要
Cobalt oxide nanoparticles, Co3O4 (1) and Co3O4 (2), have been synthesized by thermal decomposition of [CoII(bqbenzo)] and [CoII(bqb)], respectively. The morphology of these oxides is influenced by the difference in the structure of bqbenzo2− {3,4-bis(2-quinolinecarboxamido) benzophenone and, bqb2− {bis(2-quinolinecarboxamido)-1,2-benzen}, only differing in a benzoyl substituent. The products were characterized by XRD, FE-SEM, and FT-IR spectroscopy. The catalytic activity of the oxides was examined in oxygen evolution reaction (OER) by cyclic voltammetry (CV) and linear sweep voltammetry (LSV). The Co3O4 oxides (1 and 2) exhibited higher catalytic activity compared to 10 wt% Pt/C in terms of obtained current density at 0.8 V; ∼23.3 versus 6.1 mA cm−2, respectively. However, the aging tests of the two oxides in OER revealed that Co3O4 (1) is more stable than Co3O4 (2). These results demonstrated that the Co3O4 (1) has a superior performance which can be employed in the alkaline water electrolyzer anode.
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页码:122 / 131
页数:9
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