Atomic Structure of Low Temperature NVPF (IMAGE) DOE/Brookhaven National Laboratory Caption The low-temperature structure of NVPF [Na3V2(PO4)2F3] solved in this work. Calculations from Lawrence Berkeley National Laboratory suggest that the sodium atoms (white) can move most easily in the planes between the cation sites of vanadium (teal) and phosphorus (mauve) atoms during battery use. Credit Brookhaven National Laboratory Usage Restrictions OK for use with stories about this research. License Licensed content 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.