{"title":"Utilizing an electron redistribution strategy to inhibit the leaching of sulfur from CeO2/NiCo2S4 heterostructure for high-efficiency oxygen evolution","authors":"Peng Wang, Xiao Han, Ping Bai, Jiarong Mu, Yihua Zhao, Jinlu He, Yiguo Su","doi":"10.1016/j.apcatb.2023.123659","DOIUrl":null,"url":null,"abstract":"<div><p><span>Developing highly active and robust transition metal chalcogenides (TMCs) electrocatalysts toward oxygen evolution reaction (OER) remains a challenge. Herein, we report an electron redistribution mechanism that involves the metal-sulfur (M-S) bond stabilization triggered by electron transfer from Ce to Ni and Co in CeO</span><sub>2</sub>/NiCo<sub>2</sub>S<sub>4</sub> heterostructure, thereby effectively inhibiting the leaching of sulfur from CeO<sub>2</sub>/NiCo<sub>2</sub>S<sub>4</sub> during the OER process. Moreover, the well-modulated heterogeneous interface enables optimal adsorption affinity for oxygen intermediates and reduces the energy barrier of OER. As a result, CeO<sub>2</sub>/NiCo<sub>2</sub>S<sub>4</sub> exhibits superior OER activity with ultralow overpotentials of 146 and 271 mV at 10 and 100 mA cm<sup>−2</sup>, respectively. More importantly, CeO<sub>2</sub>/NiCo<sub>2</sub>S<sub>4</sub> possesses excellent durability for over 200 h at 500 mA cm<sup>−2</sup>, surpassing individual NiCo<sub>2</sub>S<sub>4</sub> and most of the reported TMCs-based electrocatalysts. This work provides new insights for achieving good compatibility of TMCs-based OER electrocatalysts in terms of high activity and stability.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"344 ","pages":"Article 123659"},"PeriodicalIF":20.2000,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis B: Environmental","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926337323013024","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Developing highly active and robust transition metal chalcogenides (TMCs) electrocatalysts toward oxygen evolution reaction (OER) remains a challenge. Herein, we report an electron redistribution mechanism that involves the metal-sulfur (M-S) bond stabilization triggered by electron transfer from Ce to Ni and Co in CeO2/NiCo2S4 heterostructure, thereby effectively inhibiting the leaching of sulfur from CeO2/NiCo2S4 during the OER process. Moreover, the well-modulated heterogeneous interface enables optimal adsorption affinity for oxygen intermediates and reduces the energy barrier of OER. As a result, CeO2/NiCo2S4 exhibits superior OER activity with ultralow overpotentials of 146 and 271 mV at 10 and 100 mA cm−2, respectively. More importantly, CeO2/NiCo2S4 possesses excellent durability for over 200 h at 500 mA cm−2, surpassing individual NiCo2S4 and most of the reported TMCs-based electrocatalysts. This work provides new insights for achieving good compatibility of TMCs-based OER electrocatalysts in terms of high activity and stability.
期刊介绍:
Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including:
1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources.
2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes.
3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts.
4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells.
5.Catalytic reactions that convert wastes into useful products.
6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts.
7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems.
8.New catalytic combustion technologies and catalysts.
9.New catalytic non-enzymatic transformations of biomass components.
The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.