3D analysis of a LiCoO2-Li(Ni1/3Mn1/3Co1/3)O2 Li-ion battery positive electrode using x-ray nano-tomography

被引：87

作者：

Chen-Wiegart, Yu-chen Karen ^{[1
]}

Liu, Zhao ^{[2
]}

Faber, Katherine T. ^{[2
]}

Barnett, Scott A. ^{[2
]}

Wang, Jun ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Photon Sci Directorate, Upton, NY 11973 USA

[2] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2013年 / 28卷

基金：

美国国家科学基金会;

关键词：

3D structural analysis; Li-ion battery; X-ray nano-tomography; MORPHOLOGICAL EVOLUTION; RECHARGEABLE BATTERIES; LICOO2; CHALLENGES; CATHODE;

D O I：

10.1016/j.elecom.2012.12.021

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A full-field high-resolution x-ray nano-tomography technique, transmission x-ray microscopy (TXM), was used to reveal the 3D morphology of the lithium ion battery composite positive electrode: LiCoO2 (LCO)-Li(Ni1/3Mn1/3Co1/3)O-2 (NMC). The TXM method allowed the unambiguous chemical identification of oxide particles by tuning the x-ray energy relative to the transition-metal absorption edges. The NMC particles have a much rougher surface compared to the LCO particles. Cracks due to processing exist in both LCO and NMC particles but the NMC particles exhibit more severe cracking and also tend to have internal pores in addition to radial cracks. Further, the carbon-based phases including the binder and the conductive carbon were identified using Zernike phase contrast imaging. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：127 / 130

页数：4

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