Real space mapping of ionic diffusion and electrochemical activity in energy storage and conversion materials
Abstract
A method and system for probing mobile ion diffusivity and electrochemical reactivity on a nanometer length scale of a free electrochemically active surface includes a control module that biases the surface of the material. An electrical excitation signal is applied to the material and induces the movement of mobile ions. An SPM probe in contact with the surface of the material detects the displacement of mobile ions at the surface of the material. A detector measures an electromechanical strain response at the surface of the material based on the movement and reactions of the mobile ions. The use of an SPM tip to detect local deformations allows highly reproducible measurements in an ambient environment without visible changes in surface structure. The measurements illustrate effective spatial resolution comparable with defect spacing and well below characteristic grain sizes of the material.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1130453
- Patent Number(s):
- 8719961
- Application Number:
- 13/291,480
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01Q - SCANNING-PROBE TECHNIQUES OR APPARATUS
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE
Citation Formats
Kalinin, Sergei V, Balke, Nina, Kumar, Amit, Dudney, Nancy J, and Jesse, Stephen. Real space mapping of ionic diffusion and electrochemical activity in energy storage and conversion materials. United States: N. p., 2014.
Web.
Kalinin, Sergei V, Balke, Nina, Kumar, Amit, Dudney, Nancy J, & Jesse, Stephen. Real space mapping of ionic diffusion and electrochemical activity in energy storage and conversion materials. United States.
Kalinin, Sergei V, Balke, Nina, Kumar, Amit, Dudney, Nancy J, and Jesse, Stephen. Tue .
"Real space mapping of ionic diffusion and electrochemical activity in energy storage and conversion materials". United States. https://www.osti.gov/servlets/purl/1130453.
@article{osti_1130453,
title = {Real space mapping of ionic diffusion and electrochemical activity in energy storage and conversion materials},
author = {Kalinin, Sergei V and Balke, Nina and Kumar, Amit and Dudney, Nancy J and Jesse, Stephen},
abstractNote = {A method and system for probing mobile ion diffusivity and electrochemical reactivity on a nanometer length scale of a free electrochemically active surface includes a control module that biases the surface of the material. An electrical excitation signal is applied to the material and induces the movement of mobile ions. An SPM probe in contact with the surface of the material detects the displacement of mobile ions at the surface of the material. A detector measures an electromechanical strain response at the surface of the material based on the movement and reactions of the mobile ions. The use of an SPM tip to detect local deformations allows highly reproducible measurements in an ambient environment without visible changes in surface structure. The measurements illustrate effective spatial resolution comparable with defect spacing and well below characteristic grain sizes of the material.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 06 00:00:00 EDT 2014},
month = {Tue May 06 00:00:00 EDT 2014}
}
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