Kühnel R-S, Reber D, Remhof A, Figi R, Bleiner D, Battaglia C
Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland.
Chem Commun (Camb). 2016 Aug 16;52(68):10435-8. doi: 10.1039/c6cc03969c.
The extended electrochemical stability window offered by highly concentrated electrolytes allows the operation of aqueous batteries at voltages significantly above the thermodynamic stability limit of water, at which the stability of the current collector potentially limits the cell voltage. Here we report the observation of suppressed anodic dissolution of aluminum in "water-in-salt" electrolytes enabling roll-to-roll electrode fabrication for high-voltage aqueous lithium-ion batteries on cost-effective light-weight aluminum current collectors using established lithium-ion battery technology.
高浓度电解质所提供的扩展电化学稳定窗口，使得水系电池能够在显著高于水的热力学稳定极限的电压下运行，而在此电压下集流体的稳定性可能会限制电池电压。在此，我们报告了在“盐包水”电解质中铝的阳极溶解受到抑制的现象，这使得我们能够利用成熟的锂离子电池技术，在具有成本效益的轻质铝集流体上进行卷对卷电极制造，用于高压水系锂离子电池。
