TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Wang, Jun
A1  - Pameté, Emmanuel
A1  - Yan, Shengli
A1  - Zhao, Wenhua
A1  - Zhang, Jianhui
A1  - He, Xiaotong
A1  - Supiyeva, Zhazira
A1  - Abbas, Qamar
A1  - Pan, Xuexue
T1  - Sodium-ion diffusion coefficients in tin phosphide determined with advanced electrochemical techniques
JF  - Electrochemistry Communications
N2  - 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.
KW  - tin phosphide
KW  - Na+ diffusion coefficients
KW  - galvanostatic/potentiostatic intermittent
KW  - titration technique
KW  - electrochemical impedance spectroscopy
Y1  - 2023
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:291:415-5776
U6  - https://doi.org/10.1016/j.elecom.2023.107488
DO  - https://doi.org/10.1016/j.elecom.2023.107488
VL  - 150
SP  - 107488
ER  -