DOI: 10.1002/adfm.200700982. Core–Ring Structured NiCo<sub>2</sub>O<sub>4</sub> Nanoplatelets: Synthesis, Characterization, and Electrocatalytic Applications

Core–Ring Structured NiCo2O4 Nanoplatelets: Synthesis, Characterization, and Electrocatalytic Applications

10.1002/adfm.200700982

Crossref journal-article

Wiley

Advanced Functional Materials (311)

Abstract

AbstractAn innovative nanostructure, namely the core–ring structure, is reported in this paper. It occurs in NiCo2O4 nanoplatelets, synthesized by the coprecipitation decomposition method using sodium hydroxide as the precipitant. The yield of core–ring hexagonal NiCo2O4 nanoplatelets is greater than 80% at 200 °C. A high‐resolution transmission electron microscopy and energy dispersive spectroscopy investigation reveals the typical core–ring nanostructure, which shows a strong enrichment of Co in the core with a Co content higher than 80%. A mechanism for the core–ring structure formation is proposed. The core–ring NiCo2O4 can be used as an electrocatalyst for an oxygen evolution reaction (OER) in alkaline water electrolysis. Compared with the electrodes of ordinary NiCo2O4 and Co3O4, or other NiCo2O4 electrodes prepared by alternate methods, the electrode coated by core‐ring NiCo2O4 nanoplatelets exhibits the greatest electrocatalytic properties, with an over‐potential of 0.315 V at a current density of 100 mA cm−2.

Bibliography

Cui, B., Lin, H., Li, J., Li, X., Yang, J., & Tao, J. (2008). CoreâRing Structured NiCo2O4 Nanoplatelets: Synthesis, Characterization, and Electrocatalytic Applications. Advanced Functional Materials, 18(9), 1440â1447. Portico.

Authors 6

Bai Cui (first)
Hong Lin (additional)
Jian‐Bao Li (additional)
Xin Li (additional)
Jun Yang (additional)
Jie Tao (additional)

References 34 Referenced 443

Dates

Type	When
Created	17 years, 4 months ago (April 29, 2008, 6:16 a.m.)
Deposited	1 year, 9 months ago (Nov. 14, 2023, 11:45 a.m.)
Indexed	1 day, 18 hours ago (Aug. 29, 2025, 6:10 a.m.)
Issued	17 years, 3 months ago (May 9, 2008)
Published	17 years, 3 months ago (May 9, 2008)
Published Online	17 years, 3 months ago (May 13, 2008)
Published Print	17 years, 3 months ago (May 9, 2008)

Funders 0

None

BibTeX

@article{Cui_2008, title={Core–Ring Structured NiCo2O4 Nanoplatelets: Synthesis, Characterization, and Electrocatalytic Applications}, volume={18}, ISSN={1616-3028}, url={http://dx.doi.org/10.1002/adfm.200700982}, DOI={10.1002/adfm.200700982}, number={9}, journal={Advanced Functional Materials}, publisher={Wiley}, author={Cui, Bai and Lin, Hong and Li, Jian‐Bao and Li, Xin and Yang, Jun and Tao, Jie}, year={2008}, month=may, pages={1440–1447} }

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