| Corrosion protection of magnesium alloys anode by cerium-based anodization coating in magnesium-ait battery |
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| 作者姓名： | Xiang You Xiaowei Zhang Chuang Yu Yuanliang Chen Huiming Li Yanqing Hou Lin Tian Ni Yang Gang Xie |
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| 作者单位： | 1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology;2. National Engineering Research Center for Rare Earth Materials,GRINM Group Co.,Ltd.;3. GRIREM Advanced Materials Co.,Ltd.;4. State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (22168019,52074141)； |
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| 摘 要： | CeN3O9·6H2O(0.5,1.0,1.5,and 2.0 g/L) was added into an 8.0% NaCl electrolyte solution to investigate this electrolyte for use in a Mg-air battery.The effects of the amount of CeN3O9-6H2O on the corrosion resistance of an AZ31 Mg alloy anode and battery performance were investigated using microstructure,electrochemical(dynamic potential polarization method and electrochemical impedance spectroscopy),and battery measurements.The re ...
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| 收稿时间： | 5 November 2021 |
Corrosion protection of magnesium alloys anode by cerium-based anodization coating in magnesium-air battery |
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| Xiang You,Xiaowei Zhang,Chuang Yu,Yuanliang Chen,Huiming Li,Yanqing Hou,Lin Tian,Ni Yang,Gang Xie.Corrosion protection of magnesium alloys anode by cerium-based anodization coating in magnesium-ait battery[J].Journal of Rare Earths,2023,41(3):471-476. |
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| Affiliation: | 1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China;2. National Engineering Research Center for Rare Earth Materials, GRINM Group Co., Ltd., Beijing 100088, China;3. GRIREM Advanced Materials Co., Ltd., Beijing 100088, China;4. State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources, Kunming 650031, China;1. Department of Mechanical Engineering, Sri Sivasubramaniya Nadar (SSN) College of Engineering, Kalavakkam 603 110, India;2. Department of Mechanical Engineering, Faculty of Engineering, Dayalbagh Educational Institute, Agra 282 005, India;3. Prosumers Solar Pvt. Ltd., Kalewadi, Pune 411 033, Maharashtra, India;4. Phullanwal, Ludhiana 141 013, Punjab, India;1. Department of Mechanical Engineering, Sri Sivasubramaniya Nadar (SSN) College of Engineering, Kalavakkam 603 110, India;2. Department of Mechanical Engineering, Faculty of Engineering, Dayalbagh Educational Institute, Agra 282 005, India;3. Director R&D, Prosumers Solar Pvt. Ltd, Kalewadi, Pune 411 033, Maharashtra, India;4. Phullanwal, Ludhiana 141 013, Punjab, India;1. Department of Chemical & Materials Engineering, Faculty of Engineering, The University of Auckland, New Zealand;2. School of Chemical Sciences, Faculty of Science, The University of Auckland, New Zealand;1. School of Materials Science and Engineering, Taiyuan University of Science and Technology, 66 Waliu Road, Taiyuan, 030024, People''s Republic of China;2. State Key Laboratory for Mechanical Behavior of Materials, Xi''an Jiaotong University, Xi''an, 710049, People''s Republic of China |
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| Abstract: | CeN3O9·6H2O (0.5, 1.0, 1.5, and 2.0 g/L) was added into an 8.0% NaCl electrolyte solution to investigate this electrolyte for use in a Mg-air battery. The effects of the amount of CeN3O9·6H2O on the corrosion resistance of an AZ31 Mg alloy anode and battery performance were investigated using microstructure, electrochemical (dynamic potential polarization method and electrochemical impedance spectroscopy), and battery measurements. The results show that the addition of CeN3O9·6H2O to the electrolyte leads to the formation of a Ce(OH)3 protective film on the surface of the AZ31 Mg alloy that improves the corrosion resistance of the Mg alloy. An increase in the concentration of CeN3O9·6H2O results in a denser Ce(OH)3 protective film and decreases corrosion rate of the AZ31 Mg alloy. When the concentration of CeN3O9·6H2O is 1.0 g/L, the corrosion rate of the Mg alloy is the lowest with a corrosion inhibition rate of 70.4%. However, the corrosion rate increases due to the dissolution of the Ce(OH)3 protective film when the concentration of CeN3O9·6H2O is greater than 1.0 g/L. Immersing the Mg alloy in the electrolyte solution containing CeN3O9·6H2O for 50 h leads to the formation of the Ce(HO)3 protective film on its surface, which was confirmed by scanning electron microscopy of the AZ31 alloy. The Mg2+ charge transfer resistance increases by 69.5 Ω from the equivalent circuit diagram, which improves the corrosion resistance of the Mg alloy. The discharge performance of CeN3O9·6H2O improves according to a discharge test, and the discharge time increases by 40 min. |
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| Keywords: | AZ31 magnesium alloy anode Magnesium-air battery Corrosion rate Electrochemical Rare earths |
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