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{Wu:2016:10.1007/s10800-016-0995-4,
author = {Wu, B and Parkes, MP and de, Benedetti L and Marquis, AJ and Offer, GJ and Brandon, NP},
doi = {10.1007/s10800-016-0995-4},
journal = {Journal of Applied Electrochemistry},
pages = {1157--1162},
title = {Real-time monitoring of proton exchange membrane fuel cell stack failure},
url = {http://dx.doi.org/10.1007/s10800-016-0995-4},
volume = {46},
year = {2016}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Uneven pressure drops in a 75-cell 9.5-kWe protonexchange membrane fuel cell stack with a U-shaped flowconfiguration have been shown to cause localised flooding.Condensed water then leads to localised cell heating, resultingin reduced membrane durability. Upon purging of the anodemanifold, the resulting mechanical strain on the membranecan lead to the formation of a pin-hole/membrane crack and arapid decrease in open circuit voltage due to gas crossover.This failure has the potential to cascade to neighbouring cellsdue to the bipolar plate coupling and the current densityheterogeneities arising from the pin-hole/membrane crack.Reintroduction of hydrogen after failure results in cell voltageloss propagating from the pin-hole/membrane crack locationdue to reactant crossover from the anode to the cathode, giventhat the anode pressure is higher than the cathode pressure.Through these observations, it is recommended that purging isavoided when the onset of flooding is observed to preventirreparable damage to the stack.
AU - Wu,B
AU - Parkes,MP
AU - de,Benedetti L
AU - Marquis,AJ
AU - Offer,GJ
AU - Brandon,NP
DO - 10.1007/s10800-016-0995-4
EP - 1162
PY - 2016///
SN - 1572-8838
SP - 1157
TI - Real-time monitoring of proton exchange membrane fuel cell stack failure
T2 - Journal of Applied Electrochemistry
UR - http://dx.doi.org/10.1007/s10800-016-0995-4
UR - http://hdl.handle.net/10044/1/38538
VL - 46
ER -