Current shifts towards renewable energy technologies have increased the drive for high performance and cost effective battery systems. Sodium ion batteries present a promising alternative to the commonly used lithium-ion batteries and offer several benefits such as low cost and high availability. In previous work we have shown that amorphous TiO2 nanotube electrodes are a suitable anode materials for Na-ion batteries. The optimization of electrolytes is important to develop a system with good solubility, high transport properties, electrochemical and interfacial stability. In this study we have investigated the electrochemical properties of nanostructured titania in various electrolytes containing different solvent mixtures with NaClO4 and NaPF6 as the salt. We have found that electrolyte purity and the interaction between the electrode and the electrolyte plays a critical role in the electrochemical charge and discharge process.

Interactions of nanostructured TiO2 with nonaqueous electrolytes for Na-ion batteries

251st National Meeting (2016)

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