Spatially resolved in operando neutron scattering studies on Li-ion batteries

被引：57

作者：

Senyshyn, A. ^{[1
]}

Muehlbauer, M. J. ^{[1
,2
]}

Dolotko, O. ^{[1
,2
]}

Hofmann, M. ^{[1
]}

Pirling, T. ^{[3
]}

Ehrenberg, H. ^{[4
]}

机构：

[1] Tech Univ Munich, Forsch Neutronenquelle Heinz Maier Leibnitz FRM 2, D-85748 Garching, Germany

[2] Tech Univ Darmstadt, D-64287 Darmstadt, Germany

[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[4] KIT, Inst Appl Mat IAM ESS, D-76344 Eggenstein Leopoldshafen, Germany

来源：

JOURNAL OF POWER SOURCES | 2014年 / 245卷

关键词：

Li-ion battery; In operando studies; Fatigue effect; Spatial lithium distribution; Neutron powder diffraction; Neutron radiography and tomography; IN-SITU OBSERVATION; DIFFRACTION; RADIOGRAPHY; EVOLUTION;

D O I：

10.1016/j.jpowsour.2013.06.158

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Spatially-resolved neutron diffraction has been applied to probe the lithium distribution in radial direction of a commercial Li-ion cell of 18650-type. The spatial evolution of selected Bragg reflections for LiCoO2 (positive electrode, "cathode") and graphite and lithium intercalated graphite (negative electrode, "anode") was observed and evaluated by taking beam attenuation and cell geometry effects into account. No evidences for lithium inhomogeneities have been found for the investigated set of cells. Computed neutron tomography using a monochromatic neutron beam confirmed the homogeneous lithium distribution. The relevance of the monochromatic beam to neutron imaging studies of Li-ion cells is discussed. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：678 / 683

页数：6

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