Feasibility study of synchrotron x-ray diffraction and absorption spectroscopy for the characterisation of NMC oxides for Li-ion battery cathodes

Taehoon Kim, Song Bohang, Nikolaos Baimpas, Cristian Mocuta, Dominique Thiaudiere, Lu Li, Alexander M. Korsunsky

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

Abstract

In lithium - transition metal oxide materials, e.g. those known as nickel-manganese-cobalt oxides, or NMC, used as active materials for battery cathodes, local distortions of the host crystal lattice during Li intercalation provide key information for understanding the origins of ageing and capacity fading. To enable the detailed characterisation of these lattice distortions, we consider the combination of advanced synchrotron-based techniques, namely, X-ray diffraction (XRD) with Rietveld refinement for precise determination of unit cell parameters and atomic positions, and X-ray absorption spectroscopy (XAS) that allows studying the oxidation state and the local environment of Mn, Ni and Co atoms. Our objective is to establish the use of this combination of techniques in transmission mode through a specially modified in situ coin cell that incorporates windows to enable measurements through batteries subjected to in situ cycling.

Original languageEnglish
Title of host publicationProceedings of the International MultiConference of Engineers and Computer Scientists 2013, IMECS 2013
PublisherNewswood Limited
Pages747-753
Number of pages7
ISBN (Print)9789881925268
Publication statusPublished - 2013
Externally publishedYes
EventInternational MultiConference of Engineers and Computer Scientists 2013, IMECS 2013 - Kowloon, Hong Kong
Duration: 13 Mar 201315 Mar 2013

Publication series

NameLecture Notes in Engineering and Computer Science
Volume2203
ISSN (Print)2078-0958

Conference

ConferenceInternational MultiConference of Engineers and Computer Scientists 2013, IMECS 2013
Country/TerritoryHong Kong
CityKowloon
Period13/03/1315/03/13

Keywords

  • Electro-chemistry
  • Exafs
  • Lithium ion batteries
  • Synchrotron x-ray absorption spectroscopy

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