Journal
SCIENTIFIC REPORTS
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep26382
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Funding
- Research and Development Initiative for Scientific Innovation of New Generation Battery (RISING) project from the New Energy and Industrial Technology Department Organization (NEDO) in Japan
- Exploratory Research Grant from KRI, Inc.
- Grants-in-Aid for Scientific Research [15H05500, 15K17924] Funding Source: KAKEN
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Composite electrodes containing active materials, carbon and binder are widely used in lithium-ion batteries. Since the electrode reaction occurs preferentially in regions with lower resistance, reaction distribution can be happened within composite electrodes. We investigate the relationship between the reaction distribution with depth direction and electronic/ionic conductivity in composite electrodes with changing electrode porosities. Two dimensional X-ray absorption spectroscopy shows that the reaction distribution is happened in lower porosity electrodes. Our developed 6-probe method can measure electronic/ionic conductivity in composite electrodes. The ionic conductivity is decreased for lower porosity electrodes, which governs the reaction distribution of composite electrodes and their performances.
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