One-pot hydrothermal synthesis of a flower-like CoO/CoP3 electrocatalyst for improving overall water splitting

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2025-02-28 DOI:10.1016/j.seppur.2025.132318

Yongping Luo , Guangzhen Zhang , Yongya Wang , Yu Xie , Yike Liu , Xianchang Li , Shunjian Xu

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引用次数: 0

Abstract

In this work, a flower-like CoO/CoP₃ complex was in situ synthesized through one-pot hydrothermal method. The effects of Co/P ratios and P doping on the electrocatalytic overall water splitting was investigated. The flower-like CoO/CoP₃ composite has a larger specific surface area, lower internal resistance and faster electron transfer rate, thereby improving the electrocatalytic performance for hydrogen and oxygen evolution reactions (HER and OER). In OER, the overpotential is only 264 mV and the Tafel slope is 93 mV dec⁻¹ at 10 mA cm⁻². Its OER activity is better than that of commercial RuO₂. At the same time, In HER, the overpotential and Tafel slope at 10 mA cm⁻² are 205 mV and 137 mV dec⁻¹, respectively. This study presents a comprehensive and synergistic strategy involving the Co-to-P ratio and P content, offering valuable insights for other electrocatalysts employed in overall water splitting.

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.