@article{35417,
  author = {Rung-Chuan Lee and Joseph Franklin and Chixia Tian and Dennis Nordlund and Marca M Doeff and Robert Kostecki},
  title = {The origin of impedance rise in Ni-Rich positive electrodes for lithium-ion batteries},
  abstract = {<p><span><span>The cycling performance of nickel-rich lithium nickel cobalt&nbsp;<a class="topic-link" title="Learn more about manganese oxide from ScienceDirect's AI-generated Topic Pages" href="https://www.sciencedirect.com/topics/engineering/manganese-oxide">manganese oxide</a>&nbsp;(NMC) electrodes in Li-ion batteries (LIBs) partially depends on the control of the kinetics of&nbsp;</span><a class="topic-link" title="Learn more about degradation processes from ScienceDirect's AI-generated Topic Pages" href="https://www.sciencedirect.com/topics/engineering/degradation-process">degradation processes</a>&nbsp;that result in impedance rise. The impedance contribution from surface film formation at the NMC/electrolyte interfaces is highly dependent on the initial chemical composition and the structure of the NMC surfaces. Through comparison of film quantity and electrochemical performance of composite electrodes made of&nbsp;</span><em>pristine</em><span>- and&nbsp;</span><em>surface treated</em><span>-NMC materials, we are able to demonstrate that a simple surface treatment suppressed the subsequent film formation and reduced impedance rise of the Li/NMC half-cells during cycling. Detailed modelling of factors affecting cell impedance provide further insights to index individual&nbsp;<a class="topic-link" title="Learn more about interphase from ScienceDirect's AI-generated Topic Pages" href="https://www.sciencedirect.com/topics/engineering/interphase">interphase</a>&nbsp;resistance, highlighting the underlying positive effects of the proposed surface treatment, and demonstrating the importance of homogeneous, electronically conducting matrices throughout the composite electrode.</span></p>},
  year = {2021},
  journal = {Journal of Power Sources},
  volume = {498},
  pages = {229885},
  month = {06/2021},
  issn = {03787753},
  url = {https://linkinghub.elsevier.com/retrieve/pii/S0378775321004201},
  doi = {10.1016/j.jpowsour.2021.229885},
  language = {eng},
}