Materials Preparation Process (IMAGE) Beijing Institute of Technology Press Co., Ltd Caption Schematic of Na3V1.75Fe0.25(PO4)2F3 materials synthesis Credit https://doi.org/10.34133/energymatadv.0050 Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. 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.