An aluminum – ionic liquid interface sustaining a durable Al-air battery
| Autor: | Adi Sagy, Yair Ein-Eli, Danny Gelman, Vicky Fidelsky, Boris Shvartsev, Alon Oz, Shahaf Kozokaro, Sioma Baltianski, Itamar Wallwater, Yoed Tsur |
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| Rok vydání: | 2017 |
| Předmět: |
Battery (electricity)
Materials science Renewable Energy Sustainability and the Environment Open-circuit voltage Analytical chemistry Energy Engineering and Power Technology 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Nanowire battery 0104 chemical sciences Dielectric spectroscopy law.invention Anode chemistry.chemical_compound Chemical engineering chemistry law Ionic liquid Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Journal of Power Sources. 364:110-120 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2017.08.014 |
| Popis: | A thorough study of a unique aluminum (Al)-air battery utilizing a pure Al anode, an air cathode, and hydrophilic room temperature ionic liquid electrolyte 1-ethyl-3-methylimidazolium oligofluorohydrogenate [EMIm(HF)2.3F] is reported. The effects of various operation conditions, both at open circuit potential and under discharge modes, on the battery components were discussed. A variety of techniques were utilized to investigate and study the interfaces and processes involved, including electrochemical studies, electron microscopy, spectroscopy and diffraction. As a result of this intensive study, the upon-operation voltage drop (“dip”) obstacle, occurring in the initial stages of the Al-air battery discharge, has been resolved. In addition, the interaction of the Al anode with oligofluorohydrogenate electrolyte forms an Al- O -F layer on the Al surface, which allows both activation and low corrosion rates of the Al anode. The evolution of this layer has been studied via impedance spectroscopy genetic programming enabling a unique model of the Al-air battery. |
| Databáze: | OpenAIRE |
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