Please use this identifier to cite or link to this item: https://doi.org/10.1039/c5cp01999k
Title: In situ studies of lithium-ion diffusion in a lithium-rich thin film cathode by scanning probe microscopy techniques
Authors: Yang S.
Yan B. 
Li T. 
Zhu J. 
Lu L. 
Zeng K. 
Issue Date: 2015
Publisher: Royal Society of Chemistry
Citation: Yang S., Yan B., Li T., Zhu J., Lu L., Zeng K. (2015). In situ studies of lithium-ion diffusion in a lithium-rich thin film cathode by scanning probe microscopy techniques. Physical Chemistry Chemical Physics 17 (34) : 22235-22242. ScholarBank@NUS Repository. https://doi.org/10.1039/c5cp01999k
Abstract: This paper presents in situ characterization of lithium-ion diffusion at nano- to micro-meter scales in a Li-rich layered oxide thin film cathode under external bias by using Electrochemical Strain Microscopy (ESM) and Atomic Force Microscopy (AFM) techniques. The local variations of the diffusion coefficient are calculated and visualized from the ESM images. The results indicate that the Li-ion movement is closely correlated with the changes in the surface topography when the Li-rich cathode is subjected to an external bias. Furthermore, bias-induced Li-ion redistribution is partially reversible. Topography evolution due to Li-ion diffusion and relaxation behaviour are observed. The results from this in situ study provide the insight into the Li-ion diffusion mechanism in the cathode material and pave the way for studying the details of the diffusion-related phenomenon in Li-ion battery materials. © the Owner Societies 2015.
Source Title: Physical Chemistry Chemical Physics
URI: https://scholarbank.nus.edu.sg/handle/10635/174284
ISSN: 14639076
DOI: 10.1039/c5cp01999k
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