@article{Yang2025, 
author = {Miaorui Yang and Shengping Deng and Shuoshuo Cheng and Jingwen Zhao and Shiyu Li and Ying Bai},
title = {Unlocking fast and reversible sodium intercalation in Na3MnTi(PO4)3 cathode toward high performance sodium-ion batteries},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {8},
pages = {94907561},
keywords = {sodium-ion batteries, cathode materials, Na3MnTi(PO4)3, sodium super ionic conductor (NASICON)},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907561},
doi = {10.26599/NR.2025.94907561},
abstract = {Na3MnTi(PO4)3 (NMTP) shows significant potential as a cathode for sodium-ion batteries (SIBs) owing to its multi-electron transfer capability and high theoretical capacity. Nevertheless, its practical application is significantly limited by sluggish ion diffusion and rapid capacity decay, which stem from structural evolution during the sodiation/desodiation process. Herein, an Fe-doping strategy is proposed to reinforce the structural framework and enhance the electrochemical performance of NMTP. Trace Fe doping is found to shorten the M–O (M = Ti and Mn) bond while extending the Na–O bond, effectively minimizing structural fluctuations in NMTP during charge/discharge cycles and enhancing sodium-ion diffusion kinetics. Consequently, the Na3Mn0.99Fe0.02Ti0.99(PO4)3 (NMTP-Fe0.02) cathode demonstrates exceptional rate capability and long-term stability, delivering a high reversible capacity of 153.2 mAh·g−1 at 0.1 C and retaining 99.3 mAh·g−1 after 800 cycles at 5 C, exhibiting a capacity preservation rate of 81.5%. Moreover, its outstanding performance in full-cell configurations highlights the significant potential of NMTP-Fe0.02 for practical applications.}
}