Peng Wei, Shanshan Lv, Fan Wu, Junjie Liu, Yong Wang, Yangyang Huang, Kang Liang, Xueping Sun, Yurong Ren, Yunhui Huang. "Active Sodium Occupancy Ratio‐A Guiding Descriptor for Predicting Na
                    <sub>4</sub>
                    Fe
                    <sub>3</sub>
                    (PO
                    <sub>4</sub>
                    )
                    <sub>2</sub>
                    P
                    <sub>2</sub>
                    O
                    <sub>7</sub>
                    Sodium Storage Performance." Advanced Materials (2026). https://doi.org/10.1002/adma.73081