In-situ electronic conductivity measurements of LiNi0.45Mn1.485Cr0.05O4 thin films using all-solid-state thin-film batteries

Morihiro Sato, Takayuki Yamamoto, Munekazu Motoyama, Yasutoshi Iriyama

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Total electronic conductivity (σetotal) of LiNi0.45Mn1.485Cr0.05O4 thin film (LNM–Cr: 40 nm in thickness) between 3.5 and 4.9 V (vs. Li metal anode) was measured using all-solid-state thin-film battery (Li/LiPON/LPO/LNM–Cr) fabricated on interdigitated array (IDA) electrode. The LNM–Cr with disordered spinel phase was prepared by pulsed laser deposition on the IDA electrode. The σetotal depended on the voltage and reversibly changed regardless of lithium extraction/insertion process. Variation trends of the σetotal were in good agreement with the previous reports using the chemically delithiated powder materials. Grain boundary resistance contributes to the σetotal depending on the voltage probably because of the formation of double Schottky barrier at the grain boundaries.

Original languageEnglish
Pages (from-to)31-34
Number of pages4
JournalElectrochemistry Communications
Volume87
DOIs
Publication statusPublished - Feb 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electrochemistry

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