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Effects of lithium bis(oxalato)borate on electrochemical stability of [Emim][Al2Cl7] ionic liquid for aluminum electrolysis
Lang, Haiyan; Zhang, Junling; Kang, Yanhong; Chen, Shimou; Zhang, Suojiang
2017-04-01
发表期刊IONICS
ISSN0947-7047
卷号23期号:4页码:959-966
摘要Electrodeposition of aluminum from ionic liquids has been considered a promising approach to low-temperature aluminum electrolysis. In this study, we first investigated the electrochemical stability of 1-ethyl-3-methylimidazolium chloride ([Emim][Al2Cl7]) electrolyte, which is a typically used electrolyte for aluminum electrodeposition. It was found that part of imidazole ions decomposed on the cathode during the electrolysis process, especially when the temperature was at or over 353 K. In order to enhance the stability of the electrolyte, we further studied the effects of lithium salt and lithium bis(oxalato)borate (LiBOB), on the electrochemical stability of the [Emim][Al2Cl7] ionic liquid system. It was found that the electrochemical window of the electrolyte was broadened from 2.59 to 2.74 V at 373 K by addition of 1 mol% LiBOB. With the existence of LiBOB, the reduction current density of Al2Cl7- increased before -0.58 V and the electrodissolution of Al was more complete. The possible mechanism on the LiBOB increases the stability of the electrolyte systems also discussed based on our theoretical calculations.
关键词Ionic Liquids Aluminum Electrolysis Additive Electrochemical Stability
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1007/s11581-016-1889-5
收录类别SCI
语种英语
关键词[WOS]CHLORIDE MOLTEN-SALT ; LOW-TEMPERATURE ; TERNARY ALLOYS ; ELECTRODEPOSITION ; AL ; ADDITIVES ; DEPOSITION ; BATHS ; NICOTINATE ; BATTERIES
WOS研究方向Chemistry ; Electrochemistry ; Physics
WOS类目Chemistry, Physical ; Electrochemistry ; Physics, Condensed Matter
项目资助者973 Project of China(2015CB251401) ; National Nature Science Foundations of China(21276257 ; 91534109 ; 91434203)
WOS记录号WOS:000399829200017
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22848
专题多相复杂系统国家重点实验室
作者单位Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc,State Key, Beijing 100190, Peoples R China
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GB/T 7714
Lang, Haiyan,Zhang, Junling,Kang, Yanhong,et al. Effects of lithium bis(oxalato)borate on electrochemical stability of [Emim][Al2Cl7] ionic liquid for aluminum electrolysis[J]. IONICS,2017,23(4):959-966.
APA Lang, Haiyan,Zhang, Junling,Kang, Yanhong,Chen, Shimou,&Zhang, Suojiang.(2017).Effects of lithium bis(oxalato)borate on electrochemical stability of [Emim][Al2Cl7] ionic liquid for aluminum electrolysis.IONICS,23(4),959-966.
MLA Lang, Haiyan,et al."Effects of lithium bis(oxalato)borate on electrochemical stability of [Emim][Al2Cl7] ionic liquid for aluminum electrolysis".IONICS 23.4(2017):959-966.
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