Flow battery thin film

Can a thin-film composite membrane improve the power density of a flow battery?

The trade-off between ion selectivity and conductivity is a bottleneck of ion conductive membranes. In this paper, a thin-film composite membrane with ultrathin polyamide selective layer is found to break the trade-off between ion selectivity and conductivity, and dramatically improve the power density of a flow battery.

Can Pim membranes be used in redox flow batteries?

PIM membranes have demonstrated promising performance in a range of electrochemical devices, such as solid-state batteries, lithium–sulfur batteries, and redox flow batteries (Figure 1a).

Can thin film composite membranes improve battery cycling stability?

Here, a facile strategy is reported for regulating mass transport and enhancing battery cycling stability by employing thin film composite (TFC) membranes prepared from a PIM polymer with optimized selective-layer thickness.

Why are flow batteries regarded as a promising large-scale energy storage technology?

7. Concluding remarks and perspectives Flow batteries are regarded as one of the most promising large-scale energy storage technologies because of their site-independency, decoupling of power and energy, design flexibility, long cycle life, and high safety.

Do low-cost flow batteries have high ion conductivity and selectivity?

Low-cost flow batteries with high power density are promising for energy storage, but membranes with simultaneously high ion conductivity and selectivity should be developed. Here the authors report a thin-film composite membrane that breaks the trade-off between ion conductivity and selectivity.

Why do flow batteries have a large specific surface area?

It can be seen the specific surface area is inversely proportional to the fiber diameter, which means that a smaller fiber diameter is preferred to achieve a large specific surface area of the electrode. However, the electrodes for flow batteries need to be highly permeable for electrolyte transport.