Layered-Layered-Spinel Cathode Materials Prepared by a High-Energy Ball-Milling Process for Lithium-ion Batteries

Soo Kim, Jae Kyo Noh, Muratahan Aykol, Zhi Lu, Haesik Kim, Wonchang Choi, Chunjoong Kim, Kyung Yoon Chung*, Christopher M Wolverton, Byung Won Cho

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

In this work, we report the electrochemical properties of 0.5Li2MnO3·0.25LiNi0.5Co0.2Mn0.3O2·0.25LiNi0.5Mn1.5O4 and 0.333Li2MnO3·0.333LiNi0.5Co0.2Mn0.3O2·0.333LiNi0.5Mn1.5O4 layered-layered-spinel (L∗LS) cathode materials prepared by a high-energy ball-milling process. Our L∗LS cathode materials can deliver a large and stable capacity of ∼200 mAhg-1 at high voltages up to 4.9 V, and do not show the anomalous capacity increase upon cycling observed in previously reported three-component cathode materials synthesized with different routes. Furthermore, we have performed synchrotron-based in situ X-ray diffraction measurements and found that there are no significant structural distortions during charge/discharge runs. Lastly, we carry out (opt-type) van der Waals-corrected density functional theory (DFT) calculations to explain the enhanced cycle characteristics and reduced phase transformations in our ball-milled L∗LS cathode materials. Our simple synthesis method brings a new perspective on the use of the high-power L∗LS cathodes in practical devices.

Original languageEnglish (US)
Pages (from-to)363-370
Number of pages8
JournalACS Applied Materials and Interfaces
Volume8
Issue number1
DOIs
StatePublished - Jan 13 2016

Keywords

  • high-energy ball-milling process
  • layered-layered-spinel cathode
  • lithium-ion battery
  • nanocomposite
  • three-component electrode

ASJC Scopus subject areas

  • Materials Science(all)

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