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{Cooper:2013:10.1016/j.jpowsour.2013.04.156,
author = {Cooper, SJ and Eastwood, DS and Gelb, J and Damblanc, G and Brett, DJL and Bradley, RS and Withers, PJ and Lee, PD and Marquis, AJ and Brandon, NP and Shearing, PR},
doi = {10.1016/j.jpowsour.2013.04.156},
journal = {Journal of Power Sources},
pages = {1033--1039},
title = {Image Based Modelling of of Microstructural Heterogeneity in LiFePO4 Electrodes for Li-ion Batteries},
url = {http://dx.doi.org/10.1016/j.jpowsour.2013.04.156},
volume = {247},
year = {2013}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Battery and fuel cell simulations commonly assume that electrodes are macro-homogeneous and isotropic. These simulations have been used to successfully model performance, but give little insight into predicting failure. In Li-ion battery electrodes, it is understood that local tortuosity impacts charging rates, which may cause increased degradation. This report describes a novel approach to quantifying tortuosity based on a heat transfer analogy applied to X-ray microscopy data of a commercially available LiFePO4 electrode. This combination of X-ray imaging and image-based simulation reveals the microscopic performance of the electrode; notably, the tortuosity was observed to vary significantly depending on the direction considered, which suggests that tortuosity might best be quantified using vectors rather than scalars.
AU - Cooper,SJ
AU - Eastwood,DS
AU - Gelb,J
AU - Damblanc,G
AU - Brett,DJL
AU - Bradley,RS
AU - Withers,PJ
AU - Lee,PD
AU - Marquis,AJ
AU - Brandon,NP
AU - Shearing,PR
DO - 10.1016/j.jpowsour.2013.04.156
EP - 1039
PY - 2013///
SN - 0378-7753
SP - 1033
TI - Image Based Modelling of of Microstructural Heterogeneity in LiFePO4 Electrodes for Li-ion Batteries
T2 - Journal of Power Sources
UR - http://dx.doi.org/10.1016/j.jpowsour.2013.04.156
UR - http://www.sciencedirect.com/science/article/pii/S0378775313007763
UR - http://hdl.handle.net/10044/1/54997
VL - 247
ER -