Morelly, SL;
Gelb, J;
Iacoviello, F;
Shearing, PR;
Harris, SJ;
Alvarez, NJ;
Tang, MH;
(2018)
Three-Dimensional Visualization of Conductive Domains in Battery Electrodes with Contrast-Enhancing Nanoparticles.
ACS Applied Energy Materials
, 1
(9)
pp. 4479-4484.
10.1021/acsaem.8b01184.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | Three-Dimensional Visualization of Conductive Domains in Battery Electrodes with Contrast-Enhancing Nanoparticles |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acsaem.8b01184 |
| Publisher version: | https://doi.org/10.1021/acsaem.8b01184 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Li-ion battery, battery electrodes, electrode processing, X-ray tomography, nano-CT, heterogeneity |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10074843 |
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