TY  - JOUR
AU  - Lan, Tu
AU  - Ma, Qianli
AU  - Tsai, Chih‐Long
AU  - Tietz, Frank
AU  - Guillon, Olivier
TI  - Ionic Conductivity of Na 3 V 2 P 3 O 12 as a Function of Electrochemical Potential and its Impact on Battery Performance
JO  - Batteries & supercaps
VL  - 4
IS  - 3
SN  - 2566-6223
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2020-04814
SP  - 479-484
PY  - 2021
AB  - Na3V2(PO4)3 (NVP) is a promising electrode material for sodium‐ion batteries. However, many of its electrochemical properties like ionic conductivities have never been systematically studied. In the present paper, a battery cell with controlled morphology of NVP was prepared and the electrochemical impedance spectra were measured at various voltages. The ionic conductivity of NVP was calculated in dependence on applied potentials. NVP has a total conductivity of 1×10−6 S cm−1 at 2.9 V, which decreases to 8×10−8 S cm−1 at 3.5 V. This low conductivity, especially at higher voltages, influences the performance of batteries with an NVP electrode, especially by limiting the high‐rate cycling of solid‐state batteries.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000593127800001
DO  - DOI:10.1002/batt.202000229
UR  - https://juser.fz-juelich.de/record/888288
ER  -