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Vacuum Electrochemistry Approach to Investigate Electrical Double‐Layer Capacitances of Ionic Liquid for Epitaxial Thin‐Film Electrodes of TiO 2 and SrO on Niobium‐Doped (001)SrTiO 3
Author(s) -
Takahashi Chika,
Kanai Mariko,
Maruyama Shingo,
Matsumoto Yuji
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202000849
Subject(s) - capacitance , materials science , oxide , ionic liquid , pulsed laser deposition , electrochemistry , epitaxy , doping , ionic bonding , electrode , anatase , layer (electronics) , thin film , niobium , optoelectronics , nanotechnology , analytical chemistry (journal) , ion , chemistry , metallurgy , catalysis , organic chemistry , photocatalysis , biochemistry , chromatography
The Cover Feature illustrates a new potentiality of vacuum electrochemistry approach to investigate well‐defined ionic liquid/oxide interfaces when vacuum electrochemistry meets pulsed laser deposition (PLD). The electric double layer (EDL) capacitance of ionic liquid is carefully investigated under vacuum for oxide electrodes of not only single‐crystal SrTiO 3 , but also the subsequently PLD‐grown SrO and anatase TiO 2 epitaxial films. The direct comparison of these EDL capacitance values allows us to find out that the EDL capacitance is quite sensitive to the kinds of oxide interfaces; the ionicity of the oxides is proposed as a possible key to the interpretation of the present finding. More information can be found in the Article by C. Takahashi et al.