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Single entity electrochemistry for the elucidation of lithiation kinetics of TiO2 particles in non-aqueous batteries
- Source :
- Nano Energy. 57:827-834
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- In battery research, the development of analytical techniques is of key importance for determining intrinsic properties of active materials ultimately dictating the battery performance. We report the application of nano-impact electrochemistry to gain insight into the intrinsic properties of commercial battery materials i.e. TiO2 particles in non-aqueous media. Potentiostatic lithiation measurements do not only provide qualitative information about the rate-limiting step in the lithiation process, but also demonstrate that nano-impact electrochemistry is a suitable technique in non-aqueous media in complete absence of oxygen and water. Our results reveal that the intrinsic lithiation rate of individual TiO2 particles is not – as generally assumed – determined by interfacial ion transfer kinetics, mobility of ion and/or electrons in the bulk of the particle, but by the solid-solid electron transfer. These findings have important implications for future studies of fundamental properties of battery materials considering that charge transfer in battery electrodes does not always obey Butler-Volmer kinetics.
- Subjects :
- Battery (electricity)
Materials science
Renewable Energy, Sustainability and the Environment
Kinetics
02 engineering and technology
Electron
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
0104 chemical sciences
Ion
Electron transfer
Chemical physics
Electrode
Particle
General Materials Science
Electrical and Electronic Engineering
0210 nano-technology
Subjects
Details
- ISSN :
- 22112855
- Volume :
- 57
- Database :
- OpenAIRE
- Journal :
- Nano Energy
- Accession number :
- edsair.doi...........4d95981223d3739a88546e155127c38f
- Full Text :
- https://doi.org/10.1016/j.nanoen.2018.12.064