Hierarchically porous nitrogen-doped graphene-NiCo2O4 Hybrid Paper as an advanced electrocatalytic water-splitting material

Chen, Sheng and Qiao, Shi-Zhang (2013) Hierarchically porous nitrogen-doped graphene-NiCo2O4 Hybrid Paper as an advanced electrocatalytic water-splitting material. ACS Nano, 7 11: 10190-10196. doi:10.1021/nn404444r


Author Chen, Sheng
Qiao, Shi-Zhang
Title Hierarchically porous nitrogen-doped graphene-NiCo2O4 Hybrid Paper as an advanced electrocatalytic water-splitting material
Journal name ACS Nano   Check publisher's open access policy
ISSN 1936-0851
1936-086X
Publication date 2013-11-26
Sub-type Article (original research)
DOI 10.1021/nn404444r
Open Access Status
Volume 7
Issue 11
Start page 10190
End page 10196
Total pages 7
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Abstract In this work, we report a three-dimensional (3D) oxygen evolution reaction (OER) catalyst with hierarchical pores for water splitting. The remarkable features of well-developed in-and out-of-plane pores, 3D conductive networks, and N-doping have greatly promoted the transport in electrodes and assured high catalytic efficiency. The 3D hybrid paper of N-doped graphene-NiCo 2O4 has shown a remarkable OER catalytic activity that was comparable to that of previously reported noble metal catalysts (IrO 2). The catalytic process occurred with favorable kinetics and strong durability. The dual-active-site mechanism is responsible for the excellent performance of the hybrid catalyst; that is, the edges of NiCo2O 4 and the N (O)-metal (Ni or Co) bonds are both active sites. This study affords a new strategy to achieve optimal performance in 3D catalysts, which may be extended to the preparation of other 3D hybrid materials for a broad range of technological applications.
Keyword hierarchical porous structure
nitrogen-doped graphene
oxygen evolution
synergistic effect
ternary metal oxides
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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