Journal Article

FZJ-2020-04814

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ionic Conductivity of Na 3 V 2 P 3 O 12 as a Function of Electrochemical Potential and its Impact on Battery Performance

Lan, T. (Corresponding author)FZJ* ; Ma, Q.FZJ* ; Tsai, C.FZJ* ; Tietz, F.FZJ* ; Guillon, O.FZJ*

2021
Wiley-VCH Weinheim

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Please use a persistent id in citations: http://hdl.handle.net/2128/27396  doi:10.1002/batt.202000229

Abstract: 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.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 1221 - Fundamentals and Materials (POF4-122) (POF4-122)

Appears in the scientific report 2021

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Essential Science Indicators ; Science Citation Index Expanded ; Web of Science Core Collection

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