Operando Electrochemical Reduction Reconstruction Boosted Long-Term Overall Seawater Splitting

IF 19.3 1区材料科学 Q1 CHEMISTRY, PHYSICAL

ACS Energy Letters Pub Date : 2025-01-14 DOI:10.1021/acsenergylett.4c03209

Jingchen Na, Hongmei Yu, Jun Chi, Senyuan Jia, Zhigang Shao

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Abstract

Seawater electrolysis technology utilizes surplus renewable energy from maritime and coastal stations. However, the aggressive Cl^– in seawater caused the anodic kinetic restraints and metal dissolution deactivation, restricting the efficiency and durability of seawater electrolyzers. In this study, a convenient optimizing/retrieving strategy of the operando electrochemical reduction reconstruction (RR) has been proposed to reclaim the dissolved Fe ions from NiFe Foam by electrodeposition and decorate it onto the catalyst surface with the formation of electrophilic FeOOH. The operando electrochemistry techniques revealed that the RR-anchored FeOOH facilitated the anodic reorganization of amorphous γ-NiOOH, thus inhibiting chloride poisoning and boosting seawater oxygen evolution. Hence, the RR-optimized NiCoS NAs/NFF || NiCoS NAs/NFF showed a performance elevation (−265.4 μV h^–1) over 500 h of overall natural seawater splitting at 600 mA cm^–2 enabled by these strategic approaches. This investigation provided insight into the utilization of dissolved metal during overall seawater splitting and exhibited a promising future for long-term efficient electrolysis under harsh conditions.

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来源期刊

ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment

CiteScore

31.20

自引率

5.00%

发文量

469

审稿时长

1 months

期刊介绍： ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format. ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology. The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.