Journal article Open Access

Degradation Mechanisms of C6/LiNi0.5Mn0.3Co0.2O2 Li-ion Batteries Unraveled by Non-destructive and Post-mortem Methods

Li, Dongjiang; Li, Hu; Danilov, Dmitri; Gao, Lu; Chen, Xiaoxuan; Zhang, Zhongru; Zhou, Jiang; Eichel, Rüdiger-A.; Yang, Yong; Notten, Peter H. L.


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  <identifier identifierType="URL">https://zenodo.org/record/2642479</identifier>
  <creators>
    <creator>
      <creatorName>Li, Dongjiang</creatorName>
      <givenName>Dongjiang</givenName>
      <familyName>Li</familyName>
      <affiliation>Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Li, Hu</creatorName>
      <givenName>Hu</givenName>
      <familyName>Li</familyName>
      <affiliation>Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Danilov, Dmitri</creatorName>
      <givenName>Dmitri</givenName>
      <familyName>Danilov</familyName>
      <affiliation>Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Gao, Lu</creatorName>
      <givenName>Lu</givenName>
      <familyName>Gao</familyName>
      <affiliation>Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Chen, Xiaoxuan</creatorName>
      <givenName>Xiaoxuan</givenName>
      <familyName>Chen</familyName>
      <affiliation>Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Zhang, Zhongru</creatorName>
      <givenName>Zhongru</givenName>
      <familyName>Zhang</familyName>
      <affiliation>Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Zhou, Jiang</creatorName>
      <givenName>Jiang</givenName>
      <familyName>Zhou</familyName>
      <affiliation>Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Eichel, Rüdiger-A.</creatorName>
      <givenName>Rüdiger-A.</givenName>
      <familyName>Eichel</familyName>
      <affiliation>Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Yang, Yong</creatorName>
      <givenName>Yong</givenName>
      <familyName>Yang</familyName>
      <affiliation>Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Notten, Peter H. L.</creatorName>
      <givenName>Peter H. L.</givenName>
      <familyName>Notten</familyName>
      <affiliation>Forschungszentrum Jülich, Fundamental Electrochemistry (IEK-9), D-52425 Jülich, Germany</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Degradation Mechanisms of C6/LiNi0.5Mn0.3Co0.2O2 Li-ion Batteries Unraveled by Non-destructive and Post-mortem Methods</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2019</publicationYear>
  <subjects>
    <subject>Li-ion battery; Solid-electrolyte-interphase; Irreversible capacity loss; Electromotive force; Electrode degradation;</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2019-02-15</date>
  </dates>
  <resourceType resourceTypeGeneral="JournalArticle"/>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/2642479</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1016/j.jpowsour.2019.01.083</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;The ageing mechanisms of C6/LiNi0.5Mn0.3Co0.2O2 batteries at various discharging currents and temperatures&lt;br&gt;
have systematically been investigated with electrochemical and post-mortem analyses. The irreversible capacity&lt;br&gt;
losses (&amp;Delta;Qir) at various ageing conditions are calculated on the basis of regularly determined electromotive force&lt;br&gt;
(EMF) curves. Two stages can be distinguished for the degradation of the storage capacity at 30 &amp;deg;C. The first stage&lt;br&gt;
includes SEI formation, cathode dissolution, etc. The second stage is related to battery polarization. The various&lt;br&gt;
degradation mechanisms of the individual electrodes have been distinguished by dVEMF/dQ vs Qout and dVEMF/dQ&lt;br&gt;
vs V plots. The Solid-Electrolyte-Interface (SEI) formation as well as the electrode degradation has been experimentally&lt;br&gt;
confirmed by XPS analyses. Both Ni and Mn elements are detected at the anode while Co is absent,&lt;br&gt;
indicating that the bonding of Co atoms is more robust in the cathode host structure. A Cathode-Electrolyte-&lt;br&gt;
Interface (CEI) layer is also detected at the cathode surface. The composition of the CEI layer includes Li salts,&lt;br&gt;
such as LiF, LiCOOR, as well as transition metal compounds like NiF2. Cathode dissolution is considered to be&lt;br&gt;
responsible for both the NiF2 detected at the cathode and Ni at the anode.&lt;/p&gt;</description>
  </descriptions>
  <fundingReferences>
    <fundingReference>
      <funderName>European Commission</funderName>
      <funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/100010661</funderIdentifier>
      <awardNumber awardURI="info:eu-repo/grantAgreement/EC/H2020/769900/">769900</awardNumber>
      <awardTitle>DEsign and MOdelling for improved BAttery Safety and Efficiency</awardTitle>
    </fundingReference>
  </fundingReferences>
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