Direct Electrochemical Deposition of Lithium from Lithium Oxide in a Highly Stable Aluminium-Containing Solvate Ionic Liquid

作者：Zhang, Baoguo; Yao, Yu; Shi, Zhongning^*; Xu, Junli; Wang, Zhaowen

来源：ChemElectroChem, 2018, 5(22): 3368-3372.

DOI：10.1002/celc.201800997

• Alloys
• electrodeposition
• electro-deoxidization
• ionic liquids
• nanoalloys

Low-temperature electrochemical extraction of active metals from their corresponding chlorides in ionic liquids has long been a scientific challenge, while extraction from oxides is even more difficult. Inspired by previous reports of the electrochemical deposition of various non-active metals from their corresponding oxides in diverse ionic liquids, we demonstrate the successful electrodeposition of active Li on high-purity Al-plate substrates at relatively low temperature (353 K), as confirmed by X-ray diffraction. Furthermore, Al-Li alloy nanosheets can also be obtained on the Al surface by solid-state cathode alloying. The Li source was Li2O, which was dissolved in a highly stable Al-containing solvate ionic liquid. The dissolution mechanism and electrodeposition behaviour of Li2O were investigated using multinuclear nuclear magnetic resonance spectroscopy, theoretical calculations, and electrochemical techniques. The findings are expected to provide a theoretical basis and method for low-temperature electrochemical extraction of active metals from their oxides.

• 出版日期2018-11-13
• 单位东北大学