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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Petrov, R. H. | Madrid |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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Hoog, Joris De
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document
Batteries 2020 – Lithium - ion battery first and second life ageing, validated battery models, lifetime modelling and ageing assessment of thermal parameters
Abstract
TheEuropeanProject“Batteries2020”unitesninepartnersjointlyworkingon researchandthe developmentofcompetitiveEuropeanautomotivebatteries.Theprojectaimsatincreasingboththe energy density and lifetime of large format pouch lithium-ion batteries towards the goals targeted for automotivebatteries (250Wh/kgatcelllevel,over4000cyclesat80%depthofdischarge).Three parallelstrategiesarefollowedinordertoachievethosetargets:(i)Highlyfocusedmaterials development;twoimprovedgenerationsofNMCcathodematerialsallowstoimprovethe performance,stabilityandcyclabilityofstateoftheart battery cells.(ii) Betterunderstanding ofthe ageing phenomena; a robust and realistic testing methodology has been developed and was carried out. Combinedaccelerated,real drivingcycle tests,realfielddata,post - mortem analysis,modellingand validationwithrealdrivingprofiles wasusedtoobtain athoroughunderstandingof the degradation processes occurring in the battery cells . (iii) Reduction of battery cost; a way to reduce costs, increase battery residualvalueandimprovesustainabilityistoconsidersecondlifeusesofbatteriesusedin electricvehicleapplication.Thesebatteriesarestilloperationalandsuitabletolessrestrictive conditions, such as those for stationary and renewable energy application. Therefore, possible second life opportunities havebeenidentifiedandfurther assessed. Inthispaper,themainageingeffectsof lithiumionbatteriesareexplained.Next,anoverviewof different validatedbatterymodelswillbe discussed.Finally,amethodologyforassessingtheperformanceofthebatterycellsinasecondlife application is presented.