In-situ measurements of mechanical and volume change of LiCoO2 lithium-ion batteries during repeated charge–discharge cycling by using digital image correlation

J. LUO, C.Y. DAI, Z. WANG, K. LIU, W.G. MAO*, D.N. FANG, X. CHEN

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

51 Citations (Scopus)

Abstract

In-situ morphological evolution of displacement in pouch-type commercial lithium-ion batteries during multiple fifty-five electrochemical charging-discharging cycles was measured via digital image correlation technique. The maximum principal strain on the battery surface reached 0.35% during 55 cycles. The whole volume change analysis of LIBs shows that the maximum volume change rate arrives at 4.27% at the fully 52nd charging end, and the maximum residual volume change rate is about 2.89% at the 54th discharging end. The surface morphologies of cathodes and anodes before and after electrochemical cycling were observed by scanning electron microscopy. The elastic modulus of the copper foil in LIBs decrease from as-received 16.7 GPa to 10.6 GPa after 55 cycles by using tensile tests. © 2016 Elsevier Ltd
Original languageEnglish
Pages (from-to)759-770
Number of pages12
JournalMeasurement: Journal of the International Measurement Confederation
Volume94
Early online date14 Dec 2016
DOIs
Publication statusPublished - Dec 2016
Externally publishedYes

Bibliographical note

This work was supported by the National Natural Science Foundation of China (Grant Nos. 11102177, 11272276, 11572277), Hunan Provincial Natural Science Foundation of China (14JJ1020), the National Key Scientific Instrument and Equipment Development Project (2012YQ03007502). XC acknowledges additional support from National Natural Science Foundation of China (11172231, 11372241 and 11572238), Advanced Research Projects Agency-Energy (DE-AR0000396) and Air Force Office of Scientific Research (FA9550-12-1-0159).

Keywords

  • Digital image correlation
  • In-situ measurements
  • Lithium-ion battery
  • Volume change rate

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