View in EDS

Electrodeposition-Fabricated Flexible Copper Electrodes for Electrocatalytic Nitrate Reduction.

Saved in:
Bibliographic Details
Title: Electrodeposition-Fabricated Flexible Copper Electrodes for Electrocatalytic Nitrate Reduction.
Authors: Xing, Siqi1 (AUTHOR), Shi, Lin2 (AUTHOR), Wu, Xu1 (AUTHOR) profxuwu@hust.edu.cn
Source: Journal of The Electrochemical Society. 2026, Vol. 173 Issue 3, p1-11. 11p.
Subjects: Copper electrodes, Overpotential, Electrolysis, Electrodes, Porosity, Denitrification, Electroplating
Abstract: With the vigorous development of the field of electrocatalytic nitrate reduction, new requirements have been put forward for reactor structures and electrode adaptability. However, traditional rigid electrodes hinder industrial-scale applications. This study presents a novel flexible porous copper electrode, which is prepared through a deposition process on conductive foam substrate. This electrode ingeniously combines structural durability with high catalytic activity, making it a promising candidate for electrocatalytic nitrate reduction. Our initial research delved into the deposition nucleation kinetics of copper. The results revealed that within the deposition potential range of −0.3 V to −0.6 V, electrodeposition predominantly followed an instantaneous nucleation model. At low copper ion concentrations, the progressive nucleation model was mainly observed, while a transition towards instantaneous nucleation occurred as the copper ion concentration increased. By optimizing reaction parameters, we successfully fabricated a CuF@PUS electrode with a unique cubic structure using a cyclone electrolysis reactor. This electrode demonstrated outstanding electrocatalytic performance in nitrate reduction. In comparison to the control copper foam electrode, it exhibited a significantly lower overpotential (less than 300 mV). After a 20 h stability test, the CuF@PUS electrode maintained a high nitrate removal rate of 92.52%, underscoring its robustness and long-term operational stability. Highlights: This work introduced a flexible porous copper electrode, Cu@PUS, fabricated through a deposition process, combining structural durability with high catalytic activity for electrocatalytic nitrate reduction. We utilized a cyclone electrolysis reactor to fabricate a CuF@PUS electrode with a unique cubic structure, enhancing mass-transfer capabilities and reaction parameters for improved electrocatalytic performance. The CuF@PUS electrode exhibited a significantly lower overpotential (<300 mV) compared to the control copper foam electrode. Moreover, it maintained a high nitrate removal rate of 92.52% after a 20 h stability test, highlighting its robustness and durability for practical applications. [ABSTRACT FROM AUTHOR]
Copyright of Journal of The Electrochemical Society is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:With the vigorous development of the field of electrocatalytic nitrate reduction, new requirements have been put forward for reactor structures and electrode adaptability. However, traditional rigid electrodes hinder industrial-scale applications. This study presents a novel flexible porous copper electrode, which is prepared through a deposition process on conductive foam substrate. This electrode ingeniously combines structural durability with high catalytic activity, making it a promising candidate for electrocatalytic nitrate reduction. Our initial research delved into the deposition nucleation kinetics of copper. The results revealed that within the deposition potential range of −0.3 V to −0.6 V, electrodeposition predominantly followed an instantaneous nucleation model. At low copper ion concentrations, the progressive nucleation model was mainly observed, while a transition towards instantaneous nucleation occurred as the copper ion concentration increased. By optimizing reaction parameters, we successfully fabricated a CuF@PUS electrode with a unique cubic structure using a cyclone electrolysis reactor. This electrode demonstrated outstanding electrocatalytic performance in nitrate reduction. In comparison to the control copper foam electrode, it exhibited a significantly lower overpotential (less than 300 mV). After a 20 h stability test, the CuF@PUS electrode maintained a high nitrate removal rate of 92.52%, underscoring its robustness and long-term operational stability. Highlights: This work introduced a flexible porous copper electrode, Cu@PUS, fabricated through a deposition process, combining structural durability with high catalytic activity for electrocatalytic nitrate reduction. We utilized a cyclone electrolysis reactor to fabricate a CuF@PUS electrode with a unique cubic structure, enhancing mass-transfer capabilities and reaction parameters for improved electrocatalytic performance. The CuF@PUS electrode exhibited a significantly lower overpotential (<300 mV) compared to the control copper foam electrode. Moreover, it maintained a high nitrate removal rate of 92.52% after a 20 h stability test, highlighting its robustness and durability for practical applications. [ABSTRACT FROM AUTHOR]
ISSN:00134651
DOI:10.1149/1945-7111/ae37df