Three-dimensional ordered mesoporous Co3O4 enhanced by Pd for oxygen evolution reaction

Considerable efforts have been devoted recently to design and fabrication of high performance and low cost electrocatalysts for oxygen evolution reaction (OER). However, catalytic activity of current electrocatalysts is usually restricted by high onset potential and limited active sites. Herein, we...

Full description

Saved in:
Bibliographic Details
Published in:Scientific reports 2017-01, Vol.7 (1), p.41542-41542, Article 41542
Main Authors: Qu, Qing, Zhang, Jian-Hua, Wang, Jing, Li, Qing-Yu, Xu, Chang-Wei, Lu, Xihong
Format: Article
Language:English
Subjects:
140/146
639/4077/909/4085
639/925/357/537
Catalysts
Composite materials
Electrochemistry
Fabrication
Humanities and Social Sciences
multidisciplinary
Nanotechnology
Oxygen
Science
Science (multidisciplinary)
Silica
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Considerable efforts have been devoted recently to design and fabrication of high performance and low cost electrocatalysts for oxygen evolution reaction (OER). However, catalytic activity of current electrocatalysts is usually restricted by high onset potential and limited active sites. Herein, we fabricated three-dimensional (3D) highly ordered mesoporous Pd-Co 3 O 4 composite materials as excellent electrocatalysts for OER in alkaline solution with high activity and stability. Three-dimensional highly ordered mesoporous Co 3 O 4 material was firstly synthesized using mesoporous silica KIT-6 as hard template. Then, Pd-Co 3 O 4 nanomaterials were prepared by a simple reduction method. The as-prepared 3D mesoporous Pd-Co 3 O 4 catalysts have ordered mesoporous structure with a high surface area of 81.0 m 2  g −1 . Three-dimensional highly ordered mesoporous structure can facilitate diffusion and penetration of electrolyte and oxygen. Moreover, the catalysts can also keep catalyst particles in a well dispersed condition with more catalytic active sites. Electrochemical measurements reveal that the 3D mesoporous Pd-Co 3 O 4 catalysts exhibit superior performance in alkaline solution with low onset potential (0.415 V vs . SCE) and excellent long-duration cycling stability.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep41542