Effect of Sn and Zn alloying with Al on its electrochemical performance in an alkaline media containing CO2 for Al-air batteries application |
| |
| Affiliation: | 1. Chemistry Department, Faculty of Science, Sohag University, 82524 Sohag, Egypt;2. King Salman International University, Faculty of Science, Ras Sudr, 46612, Sinai, Egypt;1. School of Safety Science & Engineering, Xi''an University of Science and Technology, 58, Yanta Mid. Rd., Xi''an, 710054, Shaanxi, PR China;2. Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd, Xi''an, 710054, Shaanxi, PR China;3. Shaanxi Engineering Research Center for Industrial Process Safety & Emergency Rescue, 58, Yanta Mid. Rd., Xi''an, 710054, Shaanxi, PR China;4. Gas and Heat Technology, Institute of Thermal Engineering, Technical University Bergakademie Freiberg, Gustav-Zeuner-Straße 7, 09599 Freiberg, Germany;1. LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, Porto, 4200-465, Portugal;2. ENEA, Energy Technologies and Renewable Sources Department, Via Anguillarese 301, Rome, 00123, Italy;3. ALiCE – Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, Porto, 4200-465, Portugal;4. ENEA, Fusion and Technology for Nuclear Safety and Security Department, Via E. Fermi 45, Frascati, 00044, Italy;1. Department of Automobile Engineering, Hindustan Institute of Technology & Science, Padur, Chennai, 603103, India;2. Automotive Research Centre, School of Mechanical Engineering, Vellore Institute of Technology, Vellore, 632014, Tamilnadu, India;1. School of Integrated Circuits, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China;2. School of Information and Intelligent Engineering, Guangzhou Xinhua University, Dongguan, 523133, Guangdong, China;1. Ustinov Baltic State Technical University “VOENMEH”, 1 Pervaya Krasnoarmeyskaya St., Saint Petersburg, 190005, Russia;2. Saint Petersburg State University of Architecture and Civil Engineering, 4 Vtoraya Krasnoarmeyskaya St., Saint Petersburg, 190005, Russia;1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China;2. State Key Lab. of Automotive Safety and Energy, Tsinghua University, Beijing, 100084, China;3. Department of Building and Real Estate, The Hong Kong Polytechnic University, Hong Kong, China;4. School of Mechanical Engineering, Karlsruhe Institute of Technology, Karlsruhe, Germany |
| |
| Abstract: | Aluminum alloyed with other metals, such as Sn and Zn, was synthesized via fusion to trace the impact of alloying elements on the electrochemical characteristics of Al anodes. The corrosion inhibition and electrochemical tests were performed in a 5 M KOH medium in the absence and presence of CO2 for the Al–Sn, and Al–Zn anodes and compared to the commercial aluminum. Tafel polarization exhibited that the anodic and cathodic branches display lower current densities than Al metal in pure KOH. The steady state of the open circuit voltage (Ecorr.) for the studied alloys was shifted to a more negative magnitude than for Al. The corrosion current is sharply decreased, and potential is significantly shifted to less negative values in the presence of CO2. This is due to forming of a protective layer from the carbonate of Al, Sn, and Zn on the surface. Amazing results were obtained and discussed in the case of CO2. Electrochemical impedance spectroscopy (EIS) results exhibited that charge transfer resistance (Rct) values rise with alloying elements. The data of Tafel plots are consistent with those of EIS. The alloying of Al with Sn and Zn elements significantly affects capacitance, hydrogen evolution process suppression, and charge-discharge efficiency. This reveals that the highest potential value in the presence of CO2 in the charging process is obtained for Al–Zn alloy, while the most negative potential is obtained for Al in the discharging process with CO2. Moreover, the discharge time is higher in the alloys than in commercial Al in the absence and more in the presence of CO2. The produced alloys are thought to provide good anodes for long-life rechargeable batteries. |
| |
| Keywords: | Electrochemical performance Alkaline solution Al alloys Charge-discharge EIS |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
