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Title:
REAL SPACE MAPPING OF IONIC DIFFUSION AND ELECTROCHMICAL ACTIVITY IN ENERGY STORAGE AND CONVERSION MATERIALS
Document Type and Number:
WIPO Patent Application WO/2012/071203
Kind Code:
A3
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:
KALININ SERGEI V (US)
BALKE NINA (US)
KUMAR AMIT (US)
DUDNEY NANCY J (US)
JESSE STEPHEN (US)
Application Number:
PCT/US2011/060547
Publication Date:
July 19, 2012
Filing Date:
November 14, 2011
Export Citation:
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Assignee:
UT BATTELLE LLC (US)
KALININ SERGEI V (US)
BALKE NINA (US)
KUMAR AMIT (US)
DUDNEY NANCY J (US)
JESSE STEPHEN (US)
International Classes:
G01N27/00; G01R31/00; G01R31/26
Foreign References:
EP0517270A11992-12-09
EP0928950A21999-07-14
US5877891A1999-03-02
EP0801310A11997-10-15
Attorney, Agent or Firm:
DOCKREY, Jasper, W. (P.O.Box 10087Chicago, IL, US)
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