Effective electrocatalytic overall water splitting over a pearl chain-like NiCoP/CNT hybrid sponge electrode in basic solution

IF 4.1 3区化学 Q1 CHEMISTRY, ANALYTICAL

Journal of Electroanalytical Chemistry Pub Date : 2025-02-27 DOI:10.1016/j.jelechem.2025.119034

Shuying Wang , Liuen Wang , Yang Lu , Yingjiu Zhang

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Abstract

The electrocatalytic splitting of water into H₂ and O₂ is a potential method for continuous and controllable production of clean energy. Herein, we developed a pearl chain-like nickel cobalt phosphide (NiCoP) nanoparticle-modified 3D CNT sponge electrode by a simple electrodeposition method. The NiCoP/CNT hybrid electrode was found to exhibit excellent electrocatalytic performance for HER and OER in the alkaline solution (1 M KOH). In particular, the NiCoP/CNT hybrid electrodes generated 10 and 100 mA cm⁻² cathodic currents at overpotentials of 73 mV, and 140 mV, respectively. Meanwhile, the NiCoP/CNT compounds generated anodic currents of 10 and 100 mA cm⁻² at overpotentials of 288 and 353 mV, respectively. More specifically, no significant degradation was observed after a 100 h stability test with connecting the NiCoP/CNTs (+) and NiCoP/CNTs (−) in two-electrode system for water splitting under KOH solution. This work demonstrated that bifunctional transition metal electrocatalyst would be a wonderful catalyst for overall water splitting in basic aqueous solution.

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来源期刊

Journal of Electroanalytical Chemistry 化学-电化学

CiteScore

7.80

自引率

6.70%

发文量

912

审稿时长

2.4 months

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.