@article{Wang2025, 
author = {Zuyun Wang and Qingtao Ma and Wanxia Luo and Nannan Guo and Lili Ai and Mengjiao Xu and Changyu Leng and Luxiang Wang},
title = {Flexible 3D interlocking electron/ion transport NaTi2(PO4)3@C nanofibers for high-performance capacitive deionization},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {12},
pages = {94908128},
keywords = {capacitive deionization, NaTi2(PO4)3, three-dimensional ion channels, desalination mechanism},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94908128},
doi = {10.26599/NR.2025.94908128},
abstract = {NaTi2(PO4)3 (NTP) has open three-dimensional (3D) ion channels and a high theoretical capacity, but its inherent low electronic conductivity and poor structural stability impede practical applications. Meanwhile, the desalination mechanism of NTP in capacitive deionization (CDI) remains unclear, and the form of ion intercalation conversion is still ambiguous. Herein, we present an electron/ion transport-enhanced strategy for fabricating self-supporting electrodes via constructing an interlaced 3D network, which establishes interconnected channels for rapid electron/ion transfer and diffusion while simultaneously enhancing structural durability and mechanical robustness. The NTP combined with carbon nanofibers (NTP/CNF) composite electrode exhibits excellent salt adsorption capacity (83.9 mg·g−1), fast salt adsorption rate (7.5 mg·g−1·min−1), and cycling stability. Furthermore, the desalination mechanism of the NTP/CNF electrode during the CDI process was revealed through ex-situ X-ray diffraction (XRD) patterns, Raman spectra, and X-ray photoelectron spectroscopy (XPS) spectra, clarifying the transition from a sodium-deficient phase (NaTi2(PO4)3) to a sodium-rich phase (Na3Ti2(PO4)3).}
}