Descripción
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The elemental distribution of as-received (non-charged) and charged Li-ion battery positive electrodes containing LixNi0.8Co0.15Al0.05O2 (0.75 ? x ? 1.0) microparticles as active material is characterized by combining ?-PIXE and ?-PIGE techniques. PIGE measurements evidence that the Li distribution is inhomogeneous (existence of Li-rich and Li-depleted regions) in as-received electrodes corresponding with the distribution of secondary particles but it is homogeneous within the studied individual secondary micro-particles. The dependence of the Li distribution on electrode thickness and on charging conditions is characterized by measuring the Li distribution maps in specifically fabricated cross-sectional samples. These data show that decreasing the electrode thickness down to 35 ?m and charging the batteries at slow rate give rise to more homogeneous Li depth profiles | |
Internacional
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Si |
JCR del ISI
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Si |
Título de la revista
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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |
ISSN
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0168-583x |
Factor de impacto JCR
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Información de impacto
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Volumen
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290 |
DOI
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Número de revista
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Desde la página
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79 |
Hasta la página
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84 |
Mes
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SIN MES |
Ranking
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