Journal
ADVANCED MATERIALS
Volume 27, Issue 42, Pages 6591-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201502276
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Funding
- Samsung Advanced Institute of Technology Global Research Outreach program
- Office of Science, Office of Basic Energy Sciences, of the US Department of Energy [DE-AC02-05CH11231]
- Center for Applied Mathematics for Energy Research Applications (CAMERA)
- National Science Foundation Graduate Research Fellowship [DGE-114747]
- Stanford's Vice Provost of Undergraduate Education
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1542152] Funding Source: National Science Foundation
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High-resolution X-ray microscopy is used to investigate the sequence of lithiation in LiFePO4 porous electrodes. For electrodes with homogeneous interparticle electronic connectivity via the carbon black network, the smaller particles lithiate first. For electrodes with heterogeneous connectivity, the better-connected particles preferentially lithiate. Correlative electron and X-ray microscopy also reveal the presence of incoherent nano domains that lithiate as if they are separate particles.
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