Ceria-Optimized Oxygen-Species Exchange in Hierarchical Bimetallic Hydroxide for Electrocatalytic Water Oxidation

© 2024 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 35 vom: 01. Aug., Seite e2406682
1. Verfasser: Guo, Linchuan (VerfasserIn)
Weitere Verfasser: Zhang, Zhuang, Mu, Zhaori, Da, Pengfei, An, Li, Shen, Wei, Hou, Yichao, Xi, Pinxian, Yan, Chun-Hua
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article ceria‐based materials complex hollow structures electrocatalysis oxygen evolution reaction self‐healing surface adsorption
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520 |a The utilization of rare earth elements to regulate the interaction between catalysts and oxygen-containing species holds promising prospects in the field of oxygen electrocatalysis. Through structural engineering and adsorption regulation, it is possible to achieve high-performance catalytic sites with a broken activity-stability tradeoff. Herein, this work fabricates a hierarchical CeO2/NiCo hydroxide for electrocatalytic oxygen evolution reaction (OER). This material exhibits superior overpotentials and enhanced stability. Multiple potential-dependent experiments reveal that CeO2 promotes oxygen-species exchange, especially OH- ions, between catalyst and environment, thereby optimizing the redox transformation of hydroxide and the adsorption of oxygen-containing intermediates during OER. This is attributed to the reduction in the adsorption energy barrier of Ni to *OH facilitated by CeO2, particularly the near-interfacial Ni sites. The less-damaging adsorbate evolution mechanism and the CeO2 hierarchical shell significantly enhance the structural robustness, leading to exceptional stability. Additionally, the observed "self-healing" phenomenon provides further substantiation for the accelerated oxygen exchange. This work provides a neat strategy for the synthesis of ceria-based complex hollow electrocatalysts, as well as an in-depth insight into the co-catalytic role of CeO2 in terms of oxygen transfer 
650 4 |a Journal Article 
650 4 |a ceria‐based materials 
650 4 |a complex hollow structures 
650 4 |a electrocatalysis 
650 4 |a oxygen evolution reaction 
650 4 |a self‐healing 
650 4 |a surface adsorption 
700 1 |a Zhang, Zhuang  |e verfasserin  |4 aut 
700 1 |a Mu, Zhaori  |e verfasserin  |4 aut 
700 1 |a Da, Pengfei  |e verfasserin  |4 aut 
700 1 |a An, Li  |e verfasserin  |4 aut 
700 1 |a Shen, Wei  |e verfasserin  |4 aut 
700 1 |a Hou, Yichao  |e verfasserin  |4 aut 
700 1 |a Xi, Pinxian  |e verfasserin  |4 aut 
700 1 |a Yan, Chun-Hua  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Advanced materials (Deerfield Beach, Fla.)  |d 1998  |g 36(2024), 35 vom: 01. Aug., Seite e2406682  |w (DE-627)NLM098206397  |x 1521-4095  |7 nnns 
773 1 8 |g volume:36  |g year:2024  |g number:35  |g day:01  |g month:08  |g pages:e2406682 
856 4 0 |u http://dx.doi.org/10.1002/adma.202406682  |3 Volltext 
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