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Three-Dimensional Nickel-Borate Nanosheets Array for Efficient Oxygen Evolution at Near-Neutral pH.

Ruixiang Ge^1,2, Xiang Ren¹, Fengli Qu³

¹College of Chemistry, Sichuan University, Chengdu, 610064, Sichuan, P. R. China.

Chemistry (Weinheim an Der Bergstrasse, Germany)

|April 4, 2017

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A novel nickel-borate nanosheet array on titanium mesh electrode demonstrates excellent catalytic activity for the oxygen evolution reaction. This advanced material offers a low overpotential and high stability for efficient electrochemical water splitting.

Area of Science:

Electrochemistry
Materials Science
Catalysis

Background:

Developing efficient electrocatalysts for the oxygen evolution reaction (OER) is crucial for energy conversion technologies.
Nickel-based materials are promising OER catalysts, but their performance and stability need further enhancement.

Purpose of the Study:

To synthesize a novel nickel-borate nanosheet array on titanium mesh (Ni-Bi NA/TM) via electrochemical transformation.
To evaluate the electrocatalytic performance of Ni-Bi NA/TM for the oxygen evolution reaction.

Main Methods:

Electrochemical transformation of NiSe2 nanosheets array on titanium mesh to Ni-Bi NA/TM.
Electrochemical characterization using techniques like cyclic voltammetry and chronoamperometry in potassium borate solution (pH 9.2).

Keywords:

electrocatalysis nanosheets array near-neutral pH nickel-borate water oxidation

Related Experiment Videos

Main Results:

The Ni-Bi NA/TM electrode exhibited high catalytic activity for OER.
A low overpotential of 430 mV at 10 mA cm⁻² was achieved.
The electrode demonstrated outstanding long-term stability and high turnover frequency.

Conclusions:

Nickel-borate nanosheet arrays on titanium mesh are highly effective electrocatalysts for the oxygen evolution reaction.
The developed electrode offers a promising solution for efficient and stable electrochemical water splitting.