Comparative mechanical microscopy of Mn-Ni-Co 4:1:1 Li-Ion battery cathodes

Leon Romano-Brandt, Joris Everaerts, Jinhua Zhou, Bohang Song, Lu Li, Alexander M. Korsunsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Mechanical strain phenomena in Li-ion battery cathodes are the pivotal in performance degradation and capacity fading. Two lithium-rich layered Mn-Ni-Co (MNC) cathodes were fabricated with fixed 4:1:1 transition metal cation ratio, but distinctly different microstructures. Cathodes produced based on the mixed oxide powders were incorporated in coin cells and subjected to charge cycling, following which they were extracted and extensively characterised using a multi-technique microscopy approach. The results reveal the correlation between microstructure, stress and durability and point out possible avenues for optimising cathode design to improve the stability of future generation batteries.

Original languageEnglish
Title of host publicationProceedings of the World Congress on Engineering 2018, WCE 2018
EditorsA. M. Korsunsky, S. I. Ao, David WL Hukins, Andrew Hunter, Len Gelman
PublisherNewswood Limited
Pages546-550
Number of pages5
ISBN (Electronic)9789881404893
Publication statusPublished - 2018
Externally publishedYes
Event2018 World Congress on Engineering, WCE 2018 - London, United Kingdom
Duration: 4 Jul 20186 Jul 2018

Publication series

NameLecture Notes in Engineering and Computer Science
Volume2236
ISSN (Print)2078-0958

Conference

Conference2018 World Congress on Engineering, WCE 2018
Country/TerritoryUnited Kingdom
CityLondon
Period4/07/186/07/18

Keywords

  • Li-ion battery
  • Mechanical degradation
  • MNC
  • Residual Stress

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