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Metal-organic framework derived NiSe2/CeO2nanocomposite as a high-performance electrocatalyst for oxygen evolution reaction (OER)

Taherinia, D ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1039/d1se00458a
  3. Publisher: Royal Society of Chemistry , 2021
  4. Abstract:
  5. The development of efficient and cost-effective catalysts for the oxygen evolution reaction is highly desirable for applications that are based on sustainable and clean technologies. In this study, we report the synthesis of a series of cerium(iv) oxide and nickel diselenide nanocomposites (NiSe2/CeO2) as efficient electrocatalysts for the oxygen evolution reaction in an alkaline medium. The ratios of the two substances were optimized to reach the highest catalytic activity. The structure and morphology of synthesized materials were investigated by XRD, FE-SEM, EDX, BET, XPS, and TEM techniques. It was observed that the nanocomposite with a 10 : 1 mass ratio of NiSe2to CeO2showed the best electrocatalytic performance, with a measured overpotential of 250 mV at a current density of 10 mA cm−2and a Tafel slope of 66 mV dec−1. In addition, this nanocomposite exhibited an excellent long-term electrochemical stability for 7 h. These results are comparable to some of the best electrocatalysts known to date for electrochemical oxidation of water. © The Royal Society of Chemistry 2021
  6. Keywords:
  7. Catalyst activity ; Cerium oxide ; Cost effectiveness ; Electrocatalysts ; Electrochemical oxidation ; Metal-Organic Frameworks ; Nanocomposites ; Nickel compounds ; Organometallics ; Oxygen ; Selenium compounds ; Alkaline medium ; Clean technologies ; Cost effective ; Electrocatalytic performance ; Electrochemical stabilities ; Oxygen evolution reaction (oer) ; Structure and morphology ; Synthesized materials ; Oxygen evolution reaction ; Alkalinity ; Catalysis ; Catalyst ; Chemical reaction ; Detection method ; Electrochemical method ; Inorganic compound ; Nanocomposite ; Oxidation ; Performance assessment
  8. Source: Sustainable Energy and Fuels ; Volume 5, Issue 11 , 2021 , Pages 2994-3000 ; 23984902 (ISSN)
  9. URL: https://pubs.rsc.org/en/content/articlelanding/2021/se/d1se00458a