Electrochemical lithium intercalation into and deintercalation from vanadium oxide electrode by using potentiostatic current transient technique

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The transport of lithium through anodic vanadium oxide film and porous vanadium oxide electrodes was investigated as a function of lithium charging potential and film thickness by using a potentiostatic current transient technique. The apparent chemical diffusivities of lithium ion were determined from the current transient curves. The variation of the determined diffusivities in the fresh oxide film and porous oxide electrodes with lithium charging potential and film thickness is discussed in terms of the diffusion-controlled movement of phase boundary and interfacial residual compressive stress at the oxide film-metal interface, respectively. The time exponent value of -1.0 in the cathodic current transients obtained from annealed anodic oxide film electrode suggests that the lithium transport through the oxide film proceeds by the interface-controlled movement of phase boundary.
Publisher
ELSEVIER SCIENCE BV
Issue Date
1996-09
Language
English
Article Type
Article
Keywords

FILM; CELLS

Citation

SOLID STATE IONICS, v.90, no.1-4, pp.251 - 260

ISSN
0167-2738
DOI
10.1016/S0167-2738(96)00378-5
URI
http://hdl.handle.net/10203/70701
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