Li distribution characterization in Li-ion batteries positive electrodes containing LixNi0.8Co0.15Al0.05O2 secondary particles

Mima, K. and Gonzalez Arrabal, Raquel and Azuma, H. and Yamazaki, A. and Okuda, C. and Ukyo, H. and Sawada, H. and Fujita, K. and Kato, Y. and Perlado Martín, José Manuel and Nakai, S. (2012). Li distribution characterization in Li-ion batteries positive electrodes containing LixNi0.8Co0.15Al0.05O2 secondary particles. "Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms", v. 290 ; pp. 79-84. ISSN 0168-583X. https://doi.org/10.1016/j.nimb.2012.08.016.

Description

Title: Li distribution characterization in Li-ion batteries positive electrodes containing LixNi0.8Co0.15Al0.05O2 secondary particles
Author/s:
  • Mima, K.
  • Gonzalez Arrabal, Raquel
  • Azuma, H.
  • Yamazaki, A.
  • Okuda, C.
  • Ukyo, H.
  • Sawada, H.
  • Fujita, K.
  • Kato, Y.
  • Perlado Martín, José Manuel
  • Nakai, S.
Item Type: Article
Título de Revista/Publicación: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Date: 1 November 2012
ISSN: 0168-583X
Volume: 290
Subjects:
Faculty: Instituto de Fusión Nuclear (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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 μ-PIXE and μ-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 μm and charging the batteries at slow rate give rise to more homogeneous Li depth profiles.

More information

Item ID: 16143
DC Identifier: http://oa.upm.es/16143/
OAI Identifier: oai:oa.upm.es:16143
DOI: 10.1016/j.nimb.2012.08.016
Official URL: http://www.sciencedirect.com/science/article/pii/S0168583X12005149
Deposited by: Memoria Investigacion
Deposited on: 18 Oct 2013 14:41
Last Modified: 06 Sep 2017 15:34
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