Effect of Hematite Doping with Aliovalent Impurities on the Electrochemical Performance of ?-Fe2O3@rGO-Based Anodes in Sodium-Ion Batteries
| Autor: | Riccardo Ruffo, Claudia Triolo, Saveria Santangelo, Salvatore Patanè, Lorenzo Spadaro, Alessandra Palella, Vincenza Modafferi, Maria Grazia Musolino, Michele Fiore, Nicolò Pianta |
|---|---|
| Přispěvatelé: | Modafferi, V, Triolo, C, Fiore, M, Palella, A, Spadaro, L, Pianta, N, Ruffo, R, Patane, S, Santangelo, S, Musolino, M |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Nanocomposite
Materials science Dopant nanocomposite Graphene Sodium ion batterie General Chemical Engineering Doping Oxide Hematite Reduced graphene oxide Sodium ion batteries doping Electrochemistry reduced graphene oxide hematite Anode law.invention lcsh:Chemistry chemistry.chemical_compound Chemical engineering chemistry lcsh:QD1-999 law sodium ion batteries General Materials Science Faraday efficiency |
| Zdroj: | Nanomaterials (Basel) 10 (2020). doi:10.3390/nano10081588 info:cnr-pdr/source/autori:Vincenza Modafferi 1, Claudia Triolo 1, Michele Fiore 2, Alessandra Palella 3, Lorenzo Spadaro 3, Nicolò Pianta 2, Riccardo Ruffo 2, Salvatore Patanè 4, Saveria Santangelo 1-5 and Maria Grazia Musolino 1/titolo:Effect of Hematite Doping with Aliovalent Impurities on the Electrochemical Performance of ?-Fe2O3@rGO-Based Anodes in Sodium-Ion Batteries/doi:10.3390%2Fnano10081588/rivista:Nanomaterials (Basel)/anno:2020/pagina_da:/pagina_a:/intervallo_pagine:/volume:10 Nanomaterials Volume 10 Issue 8 Nanomaterials, Vol 10, Iss 1588, p 1588 (2020) |
| DOI: | 10.3390/nano10081588 |
| Popis: | The effect of the type of dopant (titanium and manganese) and of the reduced graphene oxide content (rGO, 30 or 50 wt %) of the &alpha Fe2O3@rGO nanocomposites on their microstructural properties and electrochemical performance was investigated. Nanostructured composites were synthesized by a simple one-step solvothermal method and evaluated as anode materials for sodium ion batteries. The doping does not influence the crystalline phase and morphology of the iron oxide nanoparticles, but remarkably increases stability and Coulombic efficiency with respect to the anode based on the composite &alpha Fe2O3@rGO. For fixed rGO content, Ti-doping improves the rate capability at lower rates, whereas Mn-doping enhances the electrode stability at higher rates, retaining a specific capacity of 56 mAhg&minus 1 at a rate of 2C. Nanocomposites with higher rGO content exhibit better electrochemical performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|