Controlled synthesis and electrochemical properties of Ag-doped Co3O4 nanorods

被引：52

作者：

Rani, B. Jansi ^{[1
]}

Raj, Shilpa P. ^{[1
]}

Saravanakumar, B. ^{[2
]}

Ravi, G. ^{[1
]}

Ganesh, V. ^{[3
]}

Ravichandran, S. ^{[4
]}

Yuvakkumar, R. ^{[1
]}

机构：

[1] Alagappa Univ, Dept Phys, Nanomat Lab, Karaikkudi 630003, Tamil Nadu, India

[2] Chonbuk Natl Univ, Dept Organ Mat & Fiber Engn, Jeonju 561756, South Korea

[3] CSIR Cent Electrochem Res Inst CSIR CECRI, Electrod & Electrocatalysis EEC Div, Karaikkudi 630003, Tamil Nadu, India

[4] CSIR Cent Electrochem Res Inst CSIR CECRI, Electro Inorgan Div, Karaikkudi 630003, Tamil Nadu, India

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 50期

关键词：

Water electrolysis; Ag-Co3O4; nanostructures; Raman; SEM; PHOTOCATALYTIC HYDROGEN-PRODUCTION; OXYGEN EVOLUTION CATALYSIS; WATER-SPLITTING CYCLE; COBALT; OXIDE; ELECTROCATALYSTS; NANOPARTICLES; NANOSHEETS; OXIDATION; ALLOYS;

D O I：

10.1016/j.ijhydene.2017.10.051

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ag-doped cobalt oxide (Co3O4) nanorods were successfully synthesized using hydrothermal route at 90, 120, 150, and 180 degrees C. The face-centered cubic structure of Co3O4 was confirmed through X-ray diffraction pattern. A well-defined Raman active mode of vibrations (E-g + F-2g + A(1g)) revealed the cubic Co3O4 formation. The morphology of Ag-doped Co3O4 nanorods was revealed from scanning electron microscopy images. High specific capacitance of 584 F/g at scan rate of 5 mV/s was obtained for the product synthesized at 150 degrees C. The improved oxygen evolution reaction (OER) for the synthesized materials was observed using linear sweep voltammogram, electrochemical impedance spectroscopy, and chronoamperometry. The obtained Ag-Co3O4 nanomaterials have more possibility to be adapted as OER catalyst for water splitting application. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：29666 / 29671

页数：6

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