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Title: Characterization of LiMn2O4 cathodes by electrochemical strain microscopy

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4943944· OSTI ID:1261313
 [1]; ORCiD logo [2]; ORCiD logo [3];  [1];  [1]; ORCiD logo [2]; ORCiD logo [4]
  1. Ural Federal Univ., Ekaterinburg (Russia). Inst. of Natural Sciences
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Inst. for Functional Imaging of Materials
  3. Univ. of Aveiro (Portugal). Physics Dept. and CICECO-Aveiro Inst. of Materials
  4. Ural Federal Univ., Ekaterinburg (Russia). Inst. of Natural Sciences; Univ. of Aveiro (Portugal). Physics Dept. and CICECO-Aveiro Inst. of Materials

Electrochemical strain microscopy (ESM) is a scanning probe microscopy(SPM) method in which the local electrodiffusion is probed via application of AC voltage to the SPM tip and registration of resulting electrochemical strain. In this study, we implemented ESM to measure local strain in bulk LiMn2O4 cathodes of a commercial Li-battery in different states of charge to investigate distribution of Li-ion mobility and concentration. Ramped AC ESM imaging and voltage spectroscopy were used to find the most reliable regime of measurements allowing separating and diminishing different contributions to ESM. This is not a trivial task due to complex geometry of the sample and various obstacles resulting in less predictable contributions of different origins into ESM response: electrostatic tip–surface interactions, charge injection, electrostriction, and flexoelectricity. Finally, understanding and control of these contributions is an important step towards quantitative interpretation of ESM data.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC); European Commission (EC), Brussels (Belgium); Government of the Russian Federation, Moscow (Russia). Ministry of Education and Science
Grant/Contract Number:
AC05-00OR22725; 290158; 1366.2014/236
OSTI ID:
1261313
Journal Information:
Applied Physics Letters, Vol. 108, Issue 11; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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Cited By (8)

In situ analytical techniques for battery interface analysis journal January 2018
Correlation between drive amplitude and resonance frequency in electrochemical strain microscopy: Influence of electrostatic forces journal June 2017
Dynamic mechanical control of local vacancies in NiO thin films journal May 2018
Phase coexistence and exchange-bias effect in LiM n 2 O 4 nanorods journal March 2018
Visualization of Local Ionic Concentration and Diffusion Constants Using a Tailored Electrochemical Strain Microscopy Method journal January 2019
Local Study of Lithiation and Degradation Paths in LiMn2O4 Battery Cathodes: Confocal Raman Microscopy Approach journal May 2018
Nanoscale electrochemical response of lithium-ion cathodes: a combined study using C-AFM and SIMS journal January 2018
Correlative Confocal Raman and Scanning Probe Microscopy in the Ionically Active Particles of LiMn2O4 Cathodes journal April 2019