@article{WangPameteYanetal.2023,
  author    = {Jun Wang and Emmanuel Pamet{\´e} and Shengli Yan and Wenhua Zhao and Jianhui Zhang and Xiaotong He and Zhazira Supiyeva and Qamar Abbas and Xuexue Pan},
  title     = {Sodium-ion diffusion coefficients in tin phosphide determined with advanced electrochemical techniques},
  series   = {Electrochemistry Communications},
  volume    = {150},
  doi       = {10.1016/j.elecom.2023.107488},
  url       = {https://nbn-resolving.org/urn:nbn:de:bsz:291:415-5776},
  pages     = {107488},
  year      = {2023},
  abstract  = {Sodium ion insertion plays a critical role in developing robust sodium-ion technologies (batteries and hybrid supercapacitors). Diffusion coefficient values of sodium (DNa+) in tin phosphide between 0.1 V and 2.0 V vs. Na/Na+ are systematically determined by galvanostatic intermittent titration technique (GITT), electrochemical impedance spectroscopy (EIS), and potentiostatic intermittent titration technique (PITT). These values range between 4.55 × 10−12 cm2 s−1 and 1.94 × 10−8 cm2 s−1 and depend on the insertion/de-insertion current and the thickness of the electrode materials. Additionally, DNa+ values differ between the first and second cation insertion because of the solid electrolyte interface (SEI) formation. DNa+ vs. insertion potential alters non-linearly in a “W” form due to the strong interactions of Na+ with tin phosphide particles. The results reveal that GITT is a more appropriate electrochemical technique than PITT and EIS for evaluating DNa+ in tin phosphide.},
  language  = {en}
}