Aqueous alkali - ion batteries offer an economic method for large-scale energy storage demanded by current sources of renewable energy. Although NASICON-type NaTi2(PO4)3 is an attractive anode material with high capacity and a low redox potential allowing for high voltage cells, it suffers from considerable capacity fade when cycled slowly and deeply. Here we discuss development of electrode binders based on conducting polymers, such as polypyrrole and polythiophenes. These binders promote significantly higher charge retention compared to the uncoated materials at 5 wt% of the total dry electrode mass. Comparisons to more complex polymer architectures will also be presented in order to optimized wetting and ion transport.

Conducting polymer binders for improving the cycling stability of aqueous sodium-ion anodes in stationary power storage

251st National Meeting (2016)

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