Sodium-ion batteries
may develop into a cost-efficient alternative
to lithium-ion batteries. Na3V2(PO4)3/C (NVP/C) is known to be a suitable electrode material
for such batteries that can be used as an anode or cathode. Here,
NVP/C-based electrodes were investigated in different cell configurations.
The electrodes were cycled against the anode materials hard carbon,
Sb/C, SnSb/C, and sodium metal. Furthermore, NVP versus NVP was investigated.
When NVP/C is cycled against the other anode materials, the cells
exhibit relatively poor reliability, but in NVP–NVP cells,
a high cycling stability was observed and more than 1500 cycles with
a capacity retention of 80% were achieved. This work demonstrates
that common problems of Na and Na-ion cells result from the anode
materials used and that NVP/C itself is very reliable both as an anode
and cathode material.
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