Cl− Boosted Active and Stable Seawater Reduction on Pt/CoP Nanoarray Electrocatalysts

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2024-12-23 DOI:10.1002/aenm.202404978

Wei Liu, Xinlong Guo, Zheheng Jiang, Jiage Yu, Linlin Zhou, Tianshui Li, Yinghao Guo, Shihang Li, Boyu Ding, Kairui Wang, Yongqiang Yang, Huijun Xin, Daojin Zhou, Yun Kuang, Xiaoming Sun

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引用次数: 0

Abstract

Hydrogen evolution in alkaline condition is kinetically unfavorable and requires active and stable electrocatalysts, not to mention the complex composition of seawater in catalytic alkaline seawater electrolysis. Herein, highly dispersed Pt on CoP nanoarray (denoted as Pt/CoP) is decorated as a hydrogen evolution electrocatalyst and further improved its activity by modulating the binding interaction between free Cl− in alkaline seawater and Pt/CoP. Compared to the blank control without Cl−, which requires an overpotential of 76 mV, this cathode exhibits an overpotential as low as 39 mV to reach −100 mA cm−2 after the addition of NaCl to the electrolyte. Characterizations and theoretical simulations demonstrate that Cl−coordinates with Pt species and strengthen the intermediates adsorption by reducing the electropositivity of the Pt sites. Furthermore, by coupling the Pt/CoP cathode with Ir/CoFe‐LDH anode, whose activity can also be boosted by Cl anions, the assembled seawater electrolyzer only required 1.75 V to 1 A cm−2 and stably operate for over 100 h. This work presents a major leap in electrode development for ultra‐high performance seawater electrolysis, highlighting that Cl−, which is generally considered detrimental, can be effectively harnessed.

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来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.