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.
Original languageEnglish
Title of host publication2019 IEEE Vehicle Power and Propulsion Conference
PublisherIEEE
Number of pages6
ISBN (Electronic)978-1-7281-1249-7
ISBN (Print)978-1-7281-1250-3
Publication statusPublished - 9 Jan 2020
EventIEEE Vehicle Power and Propulsion Conference - Hanoi, Viet Nam
Duration: 14 Oct 201917 Oct 2019
https://vppc2019.org/

Conference

ConferenceIEEE Vehicle Power and Propulsion Conference
Abbreviated titleVPPC2019
CountryViet Nam
CityHanoi
Period14/10/1917/10/19
Internet address

ID: 47066300