In-situ Formation of a Series of AgFeO2/γ-Fe2O3 Composites: Impact on Electrochemical Performance
| Autor: | Kevin Kirshenbaum, Jessica L. Durham, Esther S. Takeuchi, Kenneth J. Takeuchi, Amy C. Marschilok |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Aqueous solution Mechanical Engineering Maghemite 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Nanocrystalline material 0104 chemical sciences symbols.namesake Mechanics of Materials Ferrite (iron) symbols engineering General Materials Science Crystallite Composite material 0210 nano-technology Raman spectroscopy Bimetallic strip |
| Zdroj: | MRS Advances. 1:389-394 |
| ISSN: | 2059-8521 |
| Popis: | A paradigm for the synthetic manipulation of composition and crystallite size of bimetallic composites via a low-temperature, aqueous co-precipitation technique employing non-stoichiometric ratios of starting materials, AgNO3 and Fe(NO3 3, is introduced. In-situ formation of composites containing crystalline silver ferrite, AgFeO2, and nanocrystalline maghemite, γ-Fe2O3 is demonstrated and established by Raman spectroscopic and X-ray absorption analyses. As a cathode, the lowest silver content composites exhibited profoundly improved electrochemical performance, with reversible capacities approximately 100% higher relative to stoichiometric AgFeO2, and demonstrate the lowest capacity fade. |
| Databáze: | OpenAIRE |
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