Incremental Pressure Curves to Assess Capacity Fade in Next-Generation Li-ion Pouch Cells

Lysander De Sutter, Gert Jan Berckmans, Mario Marinaro, Joeri Van Mierlo

Onderzoeksoutput: Conference paperResearch

Samenvatting

A methodology is presented for assessing the capacity fade in next generation Li-ion pouch cells, subject to substantial lithiation induced volume changes, based on so-called incremental pressure curves. The methodology is evaluated on next-generation pouch cells with a Ni-rich NMC622 cathode against a Silicon-alloy/graphite anode. The cell is placed under volumetric constraints, which results in a measurable pressure variation during cycling. By analyzing the Incremental Pressure ( dP/dV ) curves over battery lifetime we show that the intensity of the curves’ peaks is closely related to its capacity and thus can be used to assess capacity fade of next-generation Li-ion pouch cells.
Originele taal-2English
Titel2019 IEEE Vehicle Power and Propulsion Conference
UitgeverijIEEE
Aantal pagina's6
ISBN van elektronische versie978-1-7281-1249-7
ISBN van geprinte versie978-1-7281-1250-3
StatusPublished - 9 jan 2020
EvenementIEEE Vehicle Power and Propulsion Conference - Hanoi, Viet Nam
Duur: 14 okt 201917 okt 2019
https://vppc2019.org/

Conference

ConferenceIEEE Vehicle Power and Propulsion Conference
Verkorte titelVPPC2019
LandViet Nam
StadHanoi
Periode14/10/1917/10/19
Internet adres

Keywords

  • Silicon
  • Lithium Metal
  • Pressure
  • Stress
  • Mechanical
  • Capacity fade
  • Lithium battery
  • Lithium Ion

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