Effect of Li3BO3 addition to NASICON-type single-phase all-solid-state lithium battery based on Li1.5Cr0.5Ti1.5(PO4)3

All-solid-state Li-ion battery is expected as the post Li-ion battery because of its high reliability and safety. However, the biggest issue for the all-solid-state Li-ion battery is the interfacial resistance between electrode and electrolyte rather than the bulk ionic conductivity of the solid ele...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the Ceramic Society of Japan 2019/01/01, Vol.127(1), pp.18-21
Main Authors: NISHIO, Akira, INOISHI, Atsushi, KITAJOU, Ayuko, OKADA, Shigeto
Format: Article
Language:eng ; jpn
Subjects:
Electrochemical analysis
Electrodes
Electrolytes
Ion currents
Li1.5Cr0.5Ti1.5(PO4)3
Li3BO3
Lithium
Lithium batteries
Lithium borates
Lithium-ion batteries
NASICON
Product safety
Relative density
Single-phase all-solid-state battery
Solid electrolytes
Solid state
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:All-solid-state Li-ion battery is expected as the post Li-ion battery because of its high reliability and safety. However, the biggest issue for the all-solid-state Li-ion battery is the interfacial resistance between electrode and electrolyte rather than the bulk ionic conductivity of the solid electrolyte. In order to reduce the interfacial resistance, we recently adopted a new concept, “single-phase all-solid-state battery”, which is made of a single material. In principle, single-phase all-solid-state battery has low interfacial resistance between the solid electrolyte and electrodes, because the solid electrolyte and electrodes are same material. Here, the electrochemical properties of single-phase all-solid-state battery based on Li1.5Cr0.5Ti1.5(PO4)3 and the effect of Li3BO3 additive as flux to Li1.5Cr0.5Ti1.5(PO4)3 are shown. The pellet of Li1.5Cr0.5Ti1.5(PO4)3 with Li3BO3 additive showed higher density by filling the voids of Li1.5Cr0.5Ti1.5(PO4)3. As the result of the low electronic conductivity of Li3BO3, the overpotential was increased. However, the electron leakage was suppressed. On the other hand, the operation voltage and the reversible capacity were improved due to the high lithium-ionic conductivity of Li3BO3. It was found that Li3BO3 additive is useful for the improvement of the single-phase battery.
ISSN:1882-0743
1348-6535
DOI:10.2109/jcersj2.18150