| PENG Dong,ZHANG Jing,ZHANG Min,CONG Da-long,CHEN Hai-tao,SONG Kai-qiang,LI Zhong-sheng.Research Progress of Additives for Electrodeposition of Aluminum from Ionic Liquid[J],50(3):149-157 |
| Research Progress of Additives for Electrodeposition of Aluminum from Ionic Liquid |
| Received:September 17, 2020 Revised:January 21, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.03.013 |
| KeyWord:Al deposition layers electrodeposition ionic liquid additives corrosion resistance mechanism |
| Author | Institution |
| PENG Dong |
Southwest Institute of Technology and Engineering, Chongqing , China |
| ZHANG Jing |
The Sixth Military Representative Office of the Military Representative Bureau of the Army Equipment Department in Chongqing, Chongqing , China |
| ZHANG Min |
Southwest Institute of Technology and Engineering, Chongqing , China |
| CONG Da-long |
Southwest Institute of Technology and Engineering, Chongqing , China |
| CHEN Hai-tao |
Southwest Institute of Technology and Engineering, Chongqing , China |
| SONG Kai-qiang |
Southwest Institute of Technology and Engineering, Chongqing , China |
| LI Zhong-sheng |
Southwest Institute of Technology and Engineering, Chongqing , China |
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| Abstract: |
| As a new environment-friendly room temperature electrolyte, ionic liquid has the advantages of low vapor pressure, low volatility and wide electrochemical window, so it is an ideal choice for electrodeposition of Al. However, if the ionic liquid is used to electrodeposit Al, the longer the deposition time is and the higher the current density is, the larger the gain size is and the rougher the sunface of the deposition layer is, and even dendritic deposition occurs, which is easy to peel off, thus seriously affecting the quality and performance of the Al deposition layer. Ionic liquid additives can significantly improve the brightness, flatness, density and corrosion resistance of Al deposition layer. The effects of additives on the electrodeposition of Al from ionic liquids are reviewed, with emphasis on the effects of additives on the microstructure of Al deposition layer, the physical properties of ionic liquids, the corrosion resistance of Al deposition layer and the action mechanism of additives for the electrodeposition of Al from ionic liquids. Additives control the nucleation and growth of Al grains by optimizing the electrochemical properties such as conductivity and viscosity of ionic liquids and ion discharge conditions, so as to adjust the nucleation position, refine grain size, and preferred grain orientation, and even some inorganic chloride additives can form alloys with Al, finally bring the compact Al deposition layer with brightness, flatness and excellent corrosion resistance. Additives mainly play the role of leveling agent and brightener in the electrodeposition of Al from the ionic liquids. Last, the application prospect and future research focus of additives for electrodeposition of Al from ionic liquid are analyzed and prospected. |
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