In-Situ Formed Lithium Ionic Conductor Thin Film on the Surface of High-Crystal-Layered LiCoO2 as High-Voltage Cathode Materials

The layered LiCoO2 cathode plays a key role in high-energy-density lithium-ion batteries (LIBs), delivering a capacity of ~185 mAh g−1 at a high cut-off voltage of 4.5 V (vs. Li/Li+). However, its...

Choosing the best molecular precursor to prepare Li4Ti5O12 by the sol–gel method using 1H NMR: evidence of [Ti3(OEt)13]− in solution

1H NMR spectroscopy can be used to choose the best precursor to prepare the lithium ionic conductor Li4Ti5O12 by the sol–gel method.

TEM Observation and Ionic Conductivity Study of Li2SiO3 Thin-Film on Sapphire Substrate

Thin-film samples of the lithium ionic conductor Li2SiO3(LSO) were deposited on an A-plane sapphire substrate via the pulsed laser deposition (PLD) method, and the irreversible temperature dependence of the ionic conductivity in the thin-film samples was studied. Via transmission electron microscopy (TEM) observations of annealed LSO thin-film, it was found that the as-prepared LSO thin-film was amorphous over the temperature rangeT490 K, and that nanocrystals existed in the annealed LSO thin-film in the temperature rangeT550 K. Further more, it was clarified the irreversible temperature dependence of the ionic conductivity is due to the generation of nanocrystals.