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Title: 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 Lab. (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 = {2014},
month = {5}
}

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