Lithium ionic intercalation and conduction performance of flexible-lithiated-iron oxides films synthesized by low temperature-atmospheric pressure-plasma polymerization

Autor: Min-Chih Liao, Sheng-Wei Lin, Yan-Hong Lai, Yung-Sen Lin, Z.-W. Gu
Rok vydání: 2018
Předmět:
Zdroj: Ionics. 25:1577-1593
ISSN: 1862-0760
0947-7047
DOI: 10.1007/s11581-018-2639-7
Popis: The lithium ionic intercalation and conduction performance of flexible-organo-lithiated iron oxide (LixFeOyCz) films enhanced by addition of organo-lithium oxides (LiOyCz) into organo-iron oxide (FeOyCz) films by an atmospheric pressure plasma jet (APPJ) at various mixed concentrations of ferrocene [Fe(C5H5)2] and lithium tert-butoxide [(CH3)3COLi] precursors are investigated. A rapid deposition of LixFeOyCz films onto 40 Ω/square flexible polyethylene terephthalate (PET)/indium tin oxide (ITO) substrates at short exposed durations of 37–38 s with an APPJ has been reported. The APPJ-polymerized LixFeOyCz films possess outstanding Li+ ionic intercalation performance in a 1 M LiClO4-propylene carbonate electrolyte as characterized both by potential sweep and potential step in situ Li+ ionic intercalation. The Li+ ionic intercalated (deintercalated) charge of 7.73 (6.28) mC/cm2 for FeOyCz films is advanced to 11.59 (11.22) mC/cm2 for LixFeOyCz films. The superior Li+ ionic conduction performance of LixFeOyCz films has been demonstrated by electrochemical impedance spectroscopy in the device of PET/ITO/NiOx/LixFeOyCz/NiOx/ITO, while the Li+ ionic conductivity of up to 793.0 × 10−10 S/cm at 10% of lithium tert-butoxide precursor addition is accomplished.
Databáze: OpenAIRE