Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Effect of Na3BO3 Addition into Na3V2(PO4)3 Single-Phase All-Solid-State Batteries
Akira NISHIONobuaki SHIRAIHironari MINAMIHiroaki IZUMIAtsushi INOISHI Shigeto OKADA
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Supplementary material

2021 Volume 89 Issue 3 Pages 244-249


To reduce the interfacial resistance between the electrodes and electrolyte in all solid-state battery, we have recently suggested the idea of a single-phase all-solid-state battery that is made from a single material with the three roles of electrolyte, positive electrode and negative electrode. In this research, the effects of Na3BO3 addition into Na3V2(PO4)3 were investigated with respect to the electrochemical properties. Na3BO3 addition improved the relative density of Na3V2(PO4)3 by acting as a flux to fill the voids of the sintered body, as confirmed by scanning electron microscopy (SEM) observations. The electrical conductivity is increased by the addition of Na3BO3, although the activation energy is also increased. Charge/discharge measurement revealed that Na3V2(PO4)3+Na3BO3 pellets exhibit improved cyclability and optical observation indicated a different mechanism for the in-situ formation of the electrode from a Na3V2(PO4)3 pellet.

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© The Author(s) 2021. Published by ECSJ.

This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial Share Alike 4.0 License (CC BY-NC-SA, http://creativecommons.org/licenses/by-nc-sa/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium by share-alike, provided the original work is properly cited. For permission for commercial reuse, please email to the corresponding author. [DOI: 10.5796/electrochemistry.21-00023].
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