Three-Dimensional Visualization of Conductive Domains in Battery Electrodes with Contrast-Enhancing Nanoparticles
Samantha L. Morelly, Jeff Gelb, Francesco Iacoviello, Paul R. Shearing, Stephen J. Harris, Nicolas J. Alvarez, Maureen H. Tang and Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
ACS applied energy materials, v 1(9), pp 4479-4484
Replacing conductive carbon black with commercial carbon-coated iron nanoparticles yields an effective contrast-enhancing agent to differentiate between active material, conductive additive, and binder in lithium-ion battery electrodes. Nano-XCT resolved the carbon-binder domain with 126 nm voxel resolution, showing partial coatings around the active material particles and interparticle bridges. In a complementary analysis, SEM/EDS determined individual distributions of conductive additives and binder. Surprisingly, the contrast-enhancing agents showed that the effect of preparation parameters on the heterogeneity of conductive additives was weaker than on the binder. Incorporation of such contrast-enhancing additives can improve understanding of processing-structure-function relationships in a multitude of devices for energy conversion and storage.
Three-Dimensional Visualization of Conductive Domains in Battery Electrodes with Contrast-Enhancing Nanoparticles
Creators
Samantha L. Morelly - Drexel University
Jeff Gelb - Sigray, Incorporated, 5750 Imhoff Drive, Suite I, Concord, California 94520, United States
Francesco Iacoviello - University College London
Paul R. Shearing - University College London
Stephen J. Harris - Lawrence Berkeley National Laboratory
Nicolas J. Alvarez - Drexel University
Maureen H. Tang - Drexel University
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Details
ACS applied energy materials, v 1(9), pp 4479-4484
Publisher
American Chemical Society; Washington, DC
Number of pages
11
Grant note
Royal Academy of Engineering; Royal Academy of Engineering - UK
Drexel University's College of Engineering
Vehicle Technologies Office of the U.S. Department of Energy (U.S. DOE) under the Advanced Battery Materials Research (BMR) Program; United States Department of Energy (DOE)
Resource Type
Journal article
Language
English
Academic Unit
Chemical and Biological Engineering
Web of Science ID
WOS:000458706500011
Scopus ID
2-s2.0-85064737409
Other Identifier
991019167756904721
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