AquaPIM Schematic (image) DOE/Lawrence Berkeley National Laboratory Share Print E-Mail Caption Schematic of a flow battery with an ion-selective AquaPIM membrane (noted in beige). Berkeley Lab scientists discovered that such a model could predict the lifetime and efficiency of a flow battery for the electric grid without having to build an entire device. Credit Brett Helms/Berkeley Lab Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.