1. Vertically aligned FeOOH nanosheet arrays on alkali-treated nickel foam as highly efficient electrocatalyst for oxygen evolution reaction.
- Author
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Ma, Ping, Luo, Sha, Luo, Yutong, Huang, Xiaokang, Yang, Ming, Zhao, Ziming, Yuan, Fei, Chen, Ming, and Ma, Jiantai
- Subjects
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OXYGEN evolution reactions , *BASE catalysts , *ELECTROCATALYSTS , *NICKEL , *CHEMICAL kinetics , *ENERGY conversion , *ELECTRIC conductivity - Abstract
We have rationally designed and successfully synthesized FeOOH nanosheet arrays supported on alkali-treated nickel foam. The FeOOH NSAs/ATNF material showed superior catalytic performances for OER in charge transfer, mass transport and reaction kinetics than FeOOH powder. The adverse effects caused by global climate warming continue to be a great impetus to develop electrocatalytic water splitting technology for hydrogen source production. However, there is an urgent necessity but it is still a significant challenge to explore electrocatalysts with excellent performance, low cost, and environmental benignity for expediting the oxygen evolution reaction (OER) owing to the sluggish reaction kinetics. Fe-based materials, especially FeOOH, have great potential as OER electrocatalysts but suffers from poor electrical conductivity. Herein, we rationally designed and successfully synthesized FeOOH nanosheet arrays supported on alkali-treated nickel foam (FeOOH NSAs/ATNF) and applied it as an electrocatalyst toward OER. The FeOOH NSAs/ATNF catalyst exhibited outstanding performance with small overpotential, fast kinetics and superior stability in alkaline medium. Our research opens up a facile and effective approach to develop cost-effective and high-performance electrocatalysts for energy conversion, especially for these Fe-based materials with poor electrical conductivity. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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