Imperial College London

Professor Nigel Brandon OBE FREng

Faculty of Engineering

Dean of the Faculty of Engineering
 
 
 
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Contact

 

+44 (0)20 7594 8600n.brandon Website

 
 
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Location

 

2.06Faculty BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Biton:2016:10.1149/2.0061701jes,
author = {Biton, M and Yufit, V and Tariq, F and Kishimoto, M and Brandon, NP},
doi = {10.1149/2.0061701jes},
journal = {Journal of the Electrochemical Society},
pages = {A6032--A6038},
title = {Enhanced Imaging of Lithium Ion Battery Electrode Materials},
url = {http://dx.doi.org/10.1149/2.0061701jes},
volume = {164},
year = {2016}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - In this study we present a novel method of lithium ion battery electrode sample preparation with a new type of epoxy impregnation,brominated (Br) epoxy, which is introduced here for the first time for this purpose and found suitable for focused ion beam scanningelectron microscope (FIB-SEM) tomography. The Br epoxy improves image contrast, which enables higher FIB-SEM resolution (3Dimaging), which is amongst the highest ever reported for composite LFP cathodes using FIB-SEM. In turn it means that the particlesare well defined and the size distribution of each phase can be analyzed accurately from the complex 3D electrode microstructureusing advanced quantification algorithms.The authors present for the first time a new methodology of contrast enhancement for 3D imaging, including novel advancedquantification, on a commercial Lithium Iron Phosphate (LFP) LiFePO4 cathode. The aim of this work is to improve the quality ofthe 3D imaging of challenging battery materials by developing methods to increase contrast between otherwise previously poorlydifferentiated phases. This is necessary to enable capture of the real geometry of electrode microstructures, which allows measurementof a wide range of microstructural properties such as pore/particle size distributions, surface area, tortuosity and porosity. Theseproperties play vital roles in determining the performance of battery electrodes.
AU - Biton,M
AU - Yufit,V
AU - Tariq,F
AU - Kishimoto,M
AU - Brandon,NP
DO - 10.1149/2.0061701jes
EP - 6038
PY - 2016///
SN - 0013-4651
SP - 6032
TI - Enhanced Imaging of Lithium Ion Battery Electrode Materials
T2 - Journal of the Electrochemical Society
UR - http://dx.doi.org/10.1149/2.0061701jes
UR - http://hdl.handle.net/10044/1/39824
VL - 164
ER -